The Experts below are selected from a list of 2280 Experts worldwide ranked by ideXlab platform
Fantao Kong - One of the best experts on this subject based on the ideXlab platform.
-
A Novel Composition Design Method for Beta-Gamma TiAl Alloys with Excellent Hot Workability
Metallurgical and Materials Transactions A, 2018Co-Authors: Fantao Kong, Ning Cui, Yuyong Chen, Xiaopeng WangAbstract:Beta-gamma TiAl alloys are promising light-weight structural materials for use in high-temperature applications. Disordered β phase at high temperature is beneficial to the Hot Workability of the alloys, while ordered β0 phase at room temperature is detrimental to the ductility of the alloys. However, we have not yet found a better way to quantitatively control β and β0 phase, which is key to improving the mechanical properties of beta-gamma TiAl alloys. In this paper, the effects of various β stabilizers on the contents of β0 and β phase were investigated. A quantitative composition design method for beta-gamma TiAl alloys was proposed. A room-temperature Mo equivalent ([Mo]eq-RT) was developed to estimate β0 phase content. Microstructural observations show that no β0 phase will precipitate in TiAl alloys when the value of [Mo]eq-RT is below 1. A high-temperature Mo equivalent ([Mo]eq-HT) was introduced to evaluate the Hot Workability of TiAl alloys. The relationship among alloy composition, β phase content, and Hot Workability was constructed. Isothermal compression tests indicate that the Hot Workability of TiAl alloys can be significantly improved when [Mo]eq-HT reaches above 1.3. The validity of [Mo]eq-RT and [Mo]eq-HT were verified by actual experiments. Two equivalence formulas provide important guidance for the composition design of beta-gamma TiAl alloys.
-
Improvement of microstructure, mechanical properties and Hot Workability of a TiAl-Nb-Mo alloy through Hot extrusion
Materials Science and Engineering: A, 2017Co-Authors: Xueze Jin, Fantao Kong, Kai Huang, Yingying Zong, Xunmao Zhong, Debin Shan, Steve NuttAbstract:Abstract γ-TiAl alloys are excellent candidate materials for high-temperature applications, although poor Hot Workability limits their widespread application. In the present study, the microstructure, mechanical properties and Hot Workability of TiAl-Nb-Mo alloy in the as-cast and as-extruded conditions were investigated. The as-cast TiAl alloy consisted of γ/α 2 lamellae, γ and β phase distributed at colony boundaries and on the lamellar interfaces. The tiny particles of ω 0 phase were formed, transformed from β phase during HIP treatment, which dissolved after Hot extrusion. The TiAl alloy exhibited improved mechanical properties and excellent Hot Workability after Hot extrusion because of grain refinement, the introduction of β phase and the disappearance of ω 0 phase. The anomalous yield stress phenomenon occurring in as-cast material disappeared in the as-extruded condition, which was ascribed to grain refinement that reduced the resistance of grain boundaries to intragranular slip at elevated temperature. The findings demonstrate the benefits of introducing small amounts of β phase to improve Hot Workability of TiAl-Nb-Mo alloys, particularly when followed by heat treatment to eliminate the β phase and increase the mechanical properties.
-
microstructural evolution Hot Workability and mechanical properties of ti 43al 2cr 2mn 0 2y alloy
Materials & Design, 2016Co-Authors: Ning Cui, Fantao Kong, Yuyong Chen, Xiaopeng Wang, Haitao ZhouAbstract:Abstract This study systematically investigated the microstructural evolution, Hot Workability, and mechanical properties of the β–γ TiAl alloy Ti–43Al–2Cr–2Mn–0.2Y. The as-cast alloy had a wide Hot working window and excellent Hot Workability. A crack-free pancake was obtained through one-step canned forging with an initial deformation condition of 1200 °C/0.1 s− 1. The coarse lamellar microstructures of the as-cast alloy were broken down into fine γ grains after forging. Residual lamellae were hardly observed even near the edge of the pancake. Dynamic recrystallization of γ grains was the main softening mechanism during Hot forging. Tensile tests showed that the as-forged alloy exhibited better room temperature tensile properties than the as-cast alloy because of microstructural refinement and homogenization. The ultimate tensile strength of the as-forged alloy at 700 °C was maintained at 496 MPa, and elongation was 10%. The ductile–brittle transition temperature was between 700 and 750 °C. In addition, the nano-hardness values of the β0 and γ phases were 5.6 and 4.6 GPa, respectively. The hardness of the β0 phase was lower than that of the β0 phase in TNM alloys, indicating that the hardness of the β0 phase highly depended on alloying elements.
-
Microstructural evolution, Hot Workability, and mechanical properties of Ti–43Al–2Cr–2Mn–0.2Y alloy
Materials & Design, 2016Co-Authors: Ning Cui, Fantao Kong, Yuyong Chen, Xiaopeng Wang, Zhou HaitaoAbstract:Abstract This study systematically investigated the microstructural evolution, Hot Workability, and mechanical properties of the β–γ TiAl alloy Ti–43Al–2Cr–2Mn–0.2Y. The as-cast alloy had a wide Hot working window and excellent Hot Workability. A crack-free pancake was obtained through one-step canned forging with an initial deformation condition of 1200 °C/0.1 s− 1. The coarse lamellar microstructures of the as-cast alloy were broken down into fine γ grains after forging. Residual lamellae were hardly observed even near the edge of the pancake. Dynamic recrystallization of γ grains was the main softening mechanism during Hot forging. Tensile tests showed that the as-forged alloy exhibited better room temperature tensile properties than the as-cast alloy because of microstructural refinement and homogenization. The ultimate tensile strength of the as-forged alloy at 700 °C was maintained at 496 MPa, and elongation was 10%. The ductile–brittle transition temperature was between 700 and 750 °C. In addition, the nano-hardness values of the β0 and γ phases were 5.6 and 4.6 GPa, respectively. The hardness of the β0 phase was lower than that of the β0 phase in TNM alloys, indicating that the hardness of the β0 phase highly depended on alloying elements.
-
Hot Workability of as cast ti 45al 5 4v 3 6nb 0 3y alloy
Journal of Alloys and Compounds, 2014Co-Authors: Fantao Kong, Yuyong Chen, Fei Yang, Shulong XiaoAbstract:Abstract In this paper, the Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) alloy under Hot deformation conditions in the strain rate ranging from 0.005 s−1 to 1 s−1 and the temperature ranging from 1100 °C to 1200 °C was investigated by implementing a series of Hot compressive test, analyzing the true stress and true strain data, and observing the microstructure changes. A Hot processing map for as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) was developed, based on the dynamic materials model (DMM) and experimental data. It showed that there were four different domains, for Ti–45Al–5.4V–3.6Nb–0.3Y alloy, according to the efficiency of power dissipation η, and a much safer Hot working window was disclosed, which was that the deformation temperature was higher than 1150 °C, and the deformation rate was lower than 0.01 s−1. Also different deformation mechanisms for different domains were illustrated from the aspect of microstructure changes during the process of deformation, and a sound as-forged Ti–45Al–5.4V–3.6Nb–0.3Y alloy was successfully manufactured conducted by the developed Hot processing map.
Yuyong Chen - One of the best experts on this subject based on the ideXlab platform.
-
A Novel Composition Design Method for Beta-Gamma TiAl Alloys with Excellent Hot Workability
Metallurgical and Materials Transactions A, 2018Co-Authors: Fantao Kong, Ning Cui, Yuyong Chen, Xiaopeng WangAbstract:Beta-gamma TiAl alloys are promising light-weight structural materials for use in high-temperature applications. Disordered β phase at high temperature is beneficial to the Hot Workability of the alloys, while ordered β0 phase at room temperature is detrimental to the ductility of the alloys. However, we have not yet found a better way to quantitatively control β and β0 phase, which is key to improving the mechanical properties of beta-gamma TiAl alloys. In this paper, the effects of various β stabilizers on the contents of β0 and β phase were investigated. A quantitative composition design method for beta-gamma TiAl alloys was proposed. A room-temperature Mo equivalent ([Mo]eq-RT) was developed to estimate β0 phase content. Microstructural observations show that no β0 phase will precipitate in TiAl alloys when the value of [Mo]eq-RT is below 1. A high-temperature Mo equivalent ([Mo]eq-HT) was introduced to evaluate the Hot Workability of TiAl alloys. The relationship among alloy composition, β phase content, and Hot Workability was constructed. Isothermal compression tests indicate that the Hot Workability of TiAl alloys can be significantly improved when [Mo]eq-HT reaches above 1.3. The validity of [Mo]eq-RT and [Mo]eq-HT were verified by actual experiments. Two equivalence formulas provide important guidance for the composition design of beta-gamma TiAl alloys.
-
microstructural evolution Hot Workability and mechanical properties of ti 43al 2cr 2mn 0 2y alloy
Materials & Design, 2016Co-Authors: Ning Cui, Fantao Kong, Yuyong Chen, Xiaopeng Wang, Haitao ZhouAbstract:Abstract This study systematically investigated the microstructural evolution, Hot Workability, and mechanical properties of the β–γ TiAl alloy Ti–43Al–2Cr–2Mn–0.2Y. The as-cast alloy had a wide Hot working window and excellent Hot Workability. A crack-free pancake was obtained through one-step canned forging with an initial deformation condition of 1200 °C/0.1 s− 1. The coarse lamellar microstructures of the as-cast alloy were broken down into fine γ grains after forging. Residual lamellae were hardly observed even near the edge of the pancake. Dynamic recrystallization of γ grains was the main softening mechanism during Hot forging. Tensile tests showed that the as-forged alloy exhibited better room temperature tensile properties than the as-cast alloy because of microstructural refinement and homogenization. The ultimate tensile strength of the as-forged alloy at 700 °C was maintained at 496 MPa, and elongation was 10%. The ductile–brittle transition temperature was between 700 and 750 °C. In addition, the nano-hardness values of the β0 and γ phases were 5.6 and 4.6 GPa, respectively. The hardness of the β0 phase was lower than that of the β0 phase in TNM alloys, indicating that the hardness of the β0 phase highly depended on alloying elements.
-
Microstructural evolution, Hot Workability, and mechanical properties of Ti–43Al–2Cr–2Mn–0.2Y alloy
Materials & Design, 2016Co-Authors: Ning Cui, Fantao Kong, Yuyong Chen, Xiaopeng Wang, Zhou HaitaoAbstract:Abstract This study systematically investigated the microstructural evolution, Hot Workability, and mechanical properties of the β–γ TiAl alloy Ti–43Al–2Cr–2Mn–0.2Y. The as-cast alloy had a wide Hot working window and excellent Hot Workability. A crack-free pancake was obtained through one-step canned forging with an initial deformation condition of 1200 °C/0.1 s− 1. The coarse lamellar microstructures of the as-cast alloy were broken down into fine γ grains after forging. Residual lamellae were hardly observed even near the edge of the pancake. Dynamic recrystallization of γ grains was the main softening mechanism during Hot forging. Tensile tests showed that the as-forged alloy exhibited better room temperature tensile properties than the as-cast alloy because of microstructural refinement and homogenization. The ultimate tensile strength of the as-forged alloy at 700 °C was maintained at 496 MPa, and elongation was 10%. The ductile–brittle transition temperature was between 700 and 750 °C. In addition, the nano-hardness values of the β0 and γ phases were 5.6 and 4.6 GPa, respectively. The hardness of the β0 phase was lower than that of the β0 phase in TNM alloys, indicating that the hardness of the β0 phase highly depended on alloying elements.
-
Hot Workability of as cast ti 45al 5 4v 3 6nb 0 3y alloy
Journal of Alloys and Compounds, 2014Co-Authors: Fantao Kong, Yuyong Chen, Fei Yang, Shulong XiaoAbstract:Abstract In this paper, the Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) alloy under Hot deformation conditions in the strain rate ranging from 0.005 s−1 to 1 s−1 and the temperature ranging from 1100 °C to 1200 °C was investigated by implementing a series of Hot compressive test, analyzing the true stress and true strain data, and observing the microstructure changes. A Hot processing map for as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) was developed, based on the dynamic materials model (DMM) and experimental data. It showed that there were four different domains, for Ti–45Al–5.4V–3.6Nb–0.3Y alloy, according to the efficiency of power dissipation η, and a much safer Hot working window was disclosed, which was that the deformation temperature was higher than 1150 °C, and the deformation rate was lower than 0.01 s−1. Also different deformation mechanisms for different domains were illustrated from the aspect of microstructure changes during the process of deformation, and a sound as-forged Ti–45Al–5.4V–3.6Nb–0.3Y alloy was successfully manufactured conducted by the developed Hot processing map.
-
Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y alloy
Journal of Alloys and Compounds, 2014Co-Authors: Fei Yang, Fantao Kong, Yuyong Chen, Shulong XiaoAbstract:Abstract In this paper, the Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) alloy under Hot deformation conditions in the strain rate ranging from 0.005 s−1 to 1 s−1 and the temperature ranging from 1100 °C to 1200 °C was investigated by implementing a series of Hot compressive test, analyzing the true stress and true strain data, and observing the microstructure changes. A Hot processing map for as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) was developed, based on the dynamic materials model (DMM) and experimental data. It showed that there were four different domains, for Ti–45Al–5.4V–3.6Nb–0.3Y alloy, according to the efficiency of power dissipation η, and a much safer Hot working window was disclosed, which was that the deformation temperature was higher than 1150 °C, and the deformation rate was lower than 0.01 s−1. Also different deformation mechanisms for different domains were illustrated from the aspect of microstructure changes during the process of deformation, and a sound as-forged Ti–45Al–5.4V–3.6Nb–0.3Y alloy was successfully manufactured conducted by the developed Hot processing map.
Ning Cui - One of the best experts on this subject based on the ideXlab platform.
-
A Novel Composition Design Method for Beta-Gamma TiAl Alloys with Excellent Hot Workability
Metallurgical and Materials Transactions A, 2018Co-Authors: Fantao Kong, Ning Cui, Yuyong Chen, Xiaopeng WangAbstract:Beta-gamma TiAl alloys are promising light-weight structural materials for use in high-temperature applications. Disordered β phase at high temperature is beneficial to the Hot Workability of the alloys, while ordered β0 phase at room temperature is detrimental to the ductility of the alloys. However, we have not yet found a better way to quantitatively control β and β0 phase, which is key to improving the mechanical properties of beta-gamma TiAl alloys. In this paper, the effects of various β stabilizers on the contents of β0 and β phase were investigated. A quantitative composition design method for beta-gamma TiAl alloys was proposed. A room-temperature Mo equivalent ([Mo]eq-RT) was developed to estimate β0 phase content. Microstructural observations show that no β0 phase will precipitate in TiAl alloys when the value of [Mo]eq-RT is below 1. A high-temperature Mo equivalent ([Mo]eq-HT) was introduced to evaluate the Hot Workability of TiAl alloys. The relationship among alloy composition, β phase content, and Hot Workability was constructed. Isothermal compression tests indicate that the Hot Workability of TiAl alloys can be significantly improved when [Mo]eq-HT reaches above 1.3. The validity of [Mo]eq-RT and [Mo]eq-HT were verified by actual experiments. Two equivalence formulas provide important guidance for the composition design of beta-gamma TiAl alloys.
-
microstructural evolution Hot Workability and mechanical properties of ti 43al 2cr 2mn 0 2y alloy
Materials & Design, 2016Co-Authors: Ning Cui, Fantao Kong, Yuyong Chen, Xiaopeng Wang, Haitao ZhouAbstract:Abstract This study systematically investigated the microstructural evolution, Hot Workability, and mechanical properties of the β–γ TiAl alloy Ti–43Al–2Cr–2Mn–0.2Y. The as-cast alloy had a wide Hot working window and excellent Hot Workability. A crack-free pancake was obtained through one-step canned forging with an initial deformation condition of 1200 °C/0.1 s− 1. The coarse lamellar microstructures of the as-cast alloy were broken down into fine γ grains after forging. Residual lamellae were hardly observed even near the edge of the pancake. Dynamic recrystallization of γ grains was the main softening mechanism during Hot forging. Tensile tests showed that the as-forged alloy exhibited better room temperature tensile properties than the as-cast alloy because of microstructural refinement and homogenization. The ultimate tensile strength of the as-forged alloy at 700 °C was maintained at 496 MPa, and elongation was 10%. The ductile–brittle transition temperature was between 700 and 750 °C. In addition, the nano-hardness values of the β0 and γ phases were 5.6 and 4.6 GPa, respectively. The hardness of the β0 phase was lower than that of the β0 phase in TNM alloys, indicating that the hardness of the β0 phase highly depended on alloying elements.
-
Microstructural evolution, Hot Workability, and mechanical properties of Ti–43Al–2Cr–2Mn–0.2Y alloy
Materials & Design, 2016Co-Authors: Ning Cui, Fantao Kong, Yuyong Chen, Xiaopeng Wang, Zhou HaitaoAbstract:Abstract This study systematically investigated the microstructural evolution, Hot Workability, and mechanical properties of the β–γ TiAl alloy Ti–43Al–2Cr–2Mn–0.2Y. The as-cast alloy had a wide Hot working window and excellent Hot Workability. A crack-free pancake was obtained through one-step canned forging with an initial deformation condition of 1200 °C/0.1 s− 1. The coarse lamellar microstructures of the as-cast alloy were broken down into fine γ grains after forging. Residual lamellae were hardly observed even near the edge of the pancake. Dynamic recrystallization of γ grains was the main softening mechanism during Hot forging. Tensile tests showed that the as-forged alloy exhibited better room temperature tensile properties than the as-cast alloy because of microstructural refinement and homogenization. The ultimate tensile strength of the as-forged alloy at 700 °C was maintained at 496 MPa, and elongation was 10%. The ductile–brittle transition temperature was between 700 and 750 °C. In addition, the nano-hardness values of the β0 and γ phases were 5.6 and 4.6 GPa, respectively. The hardness of the β0 phase was lower than that of the β0 phase in TNM alloys, indicating that the hardness of the β0 phase highly depended on alloying elements.
Fei Yang - One of the best experts on this subject based on the ideXlab platform.
-
Evaluation of the Hot Workability and deformation mechanisms for a metastable beta titanium alloy prepared from powder
Materials Characterization, 2019Co-Authors: Qinyang Zhao, Fei Yang, Rob Torrens, Leandro BolzoniAbstract:Abstract Ti-5Al-5V-5Mo-3Cr (Ti-5553) is a metastable beta titanium alloy and has excellent combined properties for extensive applications, but the Hot Workability and deformation mechanisms of powder metallurgy (PM) metastable beta titanium alloys are seldom reported. This study prepared the Ti-5553 alloy from powder using thermomechanical powder consolidation approach and investigated its Hot deformation behaviour at 800 °C to 1150 °C and 0.001 s−1 to 10 s−1 through thermal physical simulation using the Gleeble®-3800 simulator. The Hot processing map of the Ti-5553 alloy was successfully established based on the dynamic materials model. Various material characterization techniques, including optical microscopy (OM), transmission electron microscopy (TEM) and electron backscatter diffraction (EBSD), were used to reveal the related deformation mechanisms. The calculated apparent activation energies for the Ti-5553 alloy are 323.8 kJ/mol in (α + β) region and 227.0 kJ/mol in β region, and four primary optimum efficiency domains and one instability domain are identified in the Hot processing map. The deformation mechanisms for the Ti-5553 alloy processed at the different optimum efficiency domains are governed by various deformation mechanisms including α phase globalization, superplastic deformation, discontinuous dynamic recrystallization (DDRX) and dynamic recovery (DRV), while the deformation mechanism in the instability domain is mainly dominated by flow localization. Also, the Ti-5553 alloy in this study exhibits a wider processing window and lower deformation resistance than its counterpart and/or other similar metastable beta titanium alloys produced by ingot metallurgy (IM) approach, suggesting that the Ti-5553 alloy we produced from powder has better Hot Workability.
-
Hot Workability of as cast ti 45al 5 4v 3 6nb 0 3y alloy
Journal of Alloys and Compounds, 2014Co-Authors: Fantao Kong, Yuyong Chen, Fei Yang, Shulong XiaoAbstract:Abstract In this paper, the Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) alloy under Hot deformation conditions in the strain rate ranging from 0.005 s−1 to 1 s−1 and the temperature ranging from 1100 °C to 1200 °C was investigated by implementing a series of Hot compressive test, analyzing the true stress and true strain data, and observing the microstructure changes. A Hot processing map for as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) was developed, based on the dynamic materials model (DMM) and experimental data. It showed that there were four different domains, for Ti–45Al–5.4V–3.6Nb–0.3Y alloy, according to the efficiency of power dissipation η, and a much safer Hot working window was disclosed, which was that the deformation temperature was higher than 1150 °C, and the deformation rate was lower than 0.01 s−1. Also different deformation mechanisms for different domains were illustrated from the aspect of microstructure changes during the process of deformation, and a sound as-forged Ti–45Al–5.4V–3.6Nb–0.3Y alloy was successfully manufactured conducted by the developed Hot processing map.
-
Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y alloy
Journal of Alloys and Compounds, 2014Co-Authors: Fei Yang, Fantao Kong, Yuyong Chen, Shulong XiaoAbstract:Abstract In this paper, the Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) alloy under Hot deformation conditions in the strain rate ranging from 0.005 s−1 to 1 s−1 and the temperature ranging from 1100 °C to 1200 °C was investigated by implementing a series of Hot compressive test, analyzing the true stress and true strain data, and observing the microstructure changes. A Hot processing map for as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) was developed, based on the dynamic materials model (DMM) and experimental data. It showed that there were four different domains, for Ti–45Al–5.4V–3.6Nb–0.3Y alloy, according to the efficiency of power dissipation η, and a much safer Hot working window was disclosed, which was that the deformation temperature was higher than 1150 °C, and the deformation rate was lower than 0.01 s−1. Also different deformation mechanisms for different domains were illustrated from the aspect of microstructure changes during the process of deformation, and a sound as-forged Ti–45Al–5.4V–3.6Nb–0.3Y alloy was successfully manufactured conducted by the developed Hot processing map.
Shulong Xiao - One of the best experts on this subject based on the ideXlab platform.
-
Hot Workability of as cast ti 45al 5 4v 3 6nb 0 3y alloy
Journal of Alloys and Compounds, 2014Co-Authors: Fantao Kong, Yuyong Chen, Fei Yang, Shulong XiaoAbstract:Abstract In this paper, the Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) alloy under Hot deformation conditions in the strain rate ranging from 0.005 s−1 to 1 s−1 and the temperature ranging from 1100 °C to 1200 °C was investigated by implementing a series of Hot compressive test, analyzing the true stress and true strain data, and observing the microstructure changes. A Hot processing map for as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) was developed, based on the dynamic materials model (DMM) and experimental data. It showed that there were four different domains, for Ti–45Al–5.4V–3.6Nb–0.3Y alloy, according to the efficiency of power dissipation η, and a much safer Hot working window was disclosed, which was that the deformation temperature was higher than 1150 °C, and the deformation rate was lower than 0.01 s−1. Also different deformation mechanisms for different domains were illustrated from the aspect of microstructure changes during the process of deformation, and a sound as-forged Ti–45Al–5.4V–3.6Nb–0.3Y alloy was successfully manufactured conducted by the developed Hot processing map.
-
Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y alloy
Journal of Alloys and Compounds, 2014Co-Authors: Fei Yang, Fantao Kong, Yuyong Chen, Shulong XiaoAbstract:Abstract In this paper, the Hot Workability of as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) alloy under Hot deformation conditions in the strain rate ranging from 0.005 s−1 to 1 s−1 and the temperature ranging from 1100 °C to 1200 °C was investigated by implementing a series of Hot compressive test, analyzing the true stress and true strain data, and observing the microstructure changes. A Hot processing map for as-cast Ti–45Al–5.4V–3.6Nb–0.3Y (at.%) was developed, based on the dynamic materials model (DMM) and experimental data. It showed that there were four different domains, for Ti–45Al–5.4V–3.6Nb–0.3Y alloy, according to the efficiency of power dissipation η, and a much safer Hot working window was disclosed, which was that the deformation temperature was higher than 1150 °C, and the deformation rate was lower than 0.01 s−1. Also different deformation mechanisms for different domains were illustrated from the aspect of microstructure changes during the process of deformation, and a sound as-forged Ti–45Al–5.4V–3.6Nb–0.3Y alloy was successfully manufactured conducted by the developed Hot processing map.