The Experts below are selected from a list of 121458 Experts worldwide ranked by ideXlab platform
Jifeng Liu - One of the best experts on this subject based on the ideXlab platform.
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Highly Effective Strain-induced band-engineering of (111) oriented, direct-gap GeSn crystallized on amorphous SiO2 layers
Applied Physics Letters, 2016Co-Authors: Xiaoxin Wang, Jifeng LiuAbstract:We demonstrate highly Effective Strain-induced band-engineering of (111) oriented direct-gap Ge1−xSnx thin films (0.074
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highly Effective Strain induced band engineering of 111 oriented direct gap gesn crystallized on amorphous sio2 layers
Applied Physics Letters, 2016Co-Authors: Xiaoxin Wang, Jifeng LiuAbstract:We demonstrate highly Effective Strain-induced band-engineering of (111) oriented direct-gap Ge1−xSnx thin films (0.074 < x < 0.085) crystallized on amorphous SiO2 towards 3D photonic integration. Due to a much smaller Poisson's ratio for (111) vs. (100) orientation, 0.44% thermally induced biaxial tensile Strain reduces the direct-gap by 0.125 eV towards enhanced direct-gap semiconductor properties, twice as Effective as the tensile Strain in Ge(100) films. Correspondingly, the optical response is extended to λ = 2.8 μm. A dilatational deformation potential of a = −12.8 ± 0.8 eV is derived. These GeSn films also demonstrate high thermal stability, offering both excellent direct-gap optoelectronic properties and fabrication/operation robustness for integrated photonics.
Xiaoxin Wang - One of the best experts on this subject based on the ideXlab platform.
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Highly Effective Strain-induced band-engineering of (111) oriented, direct-gap GeSn crystallized on amorphous SiO2 layers
Applied Physics Letters, 2016Co-Authors: Xiaoxin Wang, Jifeng LiuAbstract:We demonstrate highly Effective Strain-induced band-engineering of (111) oriented direct-gap Ge1−xSnx thin films (0.074
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highly Effective Strain induced band engineering of 111 oriented direct gap gesn crystallized on amorphous sio2 layers
Applied Physics Letters, 2016Co-Authors: Xiaoxin Wang, Jifeng LiuAbstract:We demonstrate highly Effective Strain-induced band-engineering of (111) oriented direct-gap Ge1−xSnx thin films (0.074 < x < 0.085) crystallized on amorphous SiO2 towards 3D photonic integration. Due to a much smaller Poisson's ratio for (111) vs. (100) orientation, 0.44% thermally induced biaxial tensile Strain reduces the direct-gap by 0.125 eV towards enhanced direct-gap semiconductor properties, twice as Effective as the tensile Strain in Ge(100) films. Correspondingly, the optical response is extended to λ = 2.8 μm. A dilatational deformation potential of a = −12.8 ± 0.8 eV is derived. These GeSn films also demonstrate high thermal stability, offering both excellent direct-gap optoelectronic properties and fabrication/operation robustness for integrated photonics.
Fusheng Pan - One of the best experts on this subject based on the ideXlab platform.
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effect of Effective Strain gradient on texture and mechanical properties of mg 3al 1zn alloy sheets produced by asymmetric extrusion
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2017Co-Authors: Jiangfeng Song, Bin Jiang, Qinghang Wang, Bo Liu, Guangsheng Huang, Fusheng PanAbstract:Abstract In the present study, Mg–3Al–1Zn (AZ31) alloy sheets were fabricated by conventional extrusion (CE) and asymmetric extrusion (AE) processes. The microstructures, textures and mechanical properties of the AE and CE AZ31 sheets were examined and compared. The results showed that a tilted weak basal texture and microstructure refinement were obtained in the AE AZ31 sheet compared with the CE AZ31 sheet. The reason for the texture weakening and microstructure refinement was ascribed to an introduction of large Effective Strain gradient throughout the normal direction during the AE process. In addition, the AE AZ31 sheet exhibited lower yield strength and r-value, but larger ductility and n-value. Improving mechanical properties for extruded AZ31 sheet were achieved by the AE process.
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Effect of Effective Strain gradient on texture and mechanical properties of Mg–3Al–1Zn alloy sheets produced by asymmetric extrusion
Materials Science and Engineering: A, 2017Co-Authors: Jiangfeng Song, Bin Jiang, Qinghang Wang, Bo Liu, Guangsheng Huang, Fusheng PanAbstract:Abstract In the present study, Mg–3Al–1Zn (AZ31) alloy sheets were fabricated by conventional extrusion (CE) and asymmetric extrusion (AE) processes. The microstructures, textures and mechanical properties of the AE and CE AZ31 sheets were examined and compared. The results showed that a tilted weak basal texture and microstructure refinement were obtained in the AE AZ31 sheet compared with the CE AZ31 sheet. The reason for the texture weakening and microstructure refinement was ascribed to an introduction of large Effective Strain gradient throughout the normal direction during the AE process. In addition, the AE AZ31 sheet exhibited lower yield strength and r-value, but larger ductility and n-value. Improving mechanical properties for extruded AZ31 sheet were achieved by the AE process.
Ahmad Kamal Ariffin - One of the best experts on this subject based on the ideXlab platform.
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Effective Strain damage model associated with finite element modelling and experimental validation
International Journal of Fatigue, 2012Co-Authors: Nawar A. Kadhim, Shahrir Abdullah, Ahmad Kamal AriffinAbstract:Abstract An efficient computational effort is required for sufficient analysis during component design stage to avoid expensive modifications during the later stages of the manufacturing process. A combination of the Effective Strain damage (ESD) model based FORTRAN code with finite element software was proposed to predict fatigue life under random loadings. The ESD model parameters were extracted from the experimental and finite element analysis representing the Strain history for the most damaging node in an automobile lower suspension arm. The ESD model provides reliable fatigue life prediction under random loadings with only 12% minimum difference comparing to the experimental estimations.
Guangsheng Huang - One of the best experts on this subject based on the ideXlab platform.
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Improved mechanical properties of Mg-3Al-1Zn alloy sheets by optimizing the extrusion die angles: Microstructural and texture evolution
Journal of Alloys and Compounds, 2018Co-Authors: Jun Xu, Jiangfeng Song, Bin Jiang, Qinghang Wang, Tianhao Yang, Junjie He, Yangfu Chai, Guangsheng HuangAbstract:Abstract Mg-3Al-1Zn (AZ31) alloy sheets fabricated using extrusion dies with angles of 30°, 45°, 60° and 90° were investigated. Finite element method was used to analyze the Effective Strain distribution in AZ31 Mg alloy during extrusion. The microstructure, texture and final mechanical properties were determined and compared among various extruded AZ31 sheets. Results demonstrated that the difference of Effective Strain was introduced during extrusion due to the variation in die angles. In the case of the 45° extrusion die, a large difference in Effective Strain along normal direction could form during sheet forming, which resulted in a uniform microstructure and weak basal texture of extruded AZ31 sheet. Therefore, the sheet processed using 45° extrusion die showed lower yield strength and r-value, but higher ductility and n-value. This study suggested that optimization of extrusion die angle could be an Effective method to improve the mechanical properties of AZ31 Mg alloy sheets.
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effect of Effective Strain gradient on texture and mechanical properties of mg 3al 1zn alloy sheets produced by asymmetric extrusion
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2017Co-Authors: Jiangfeng Song, Bin Jiang, Qinghang Wang, Bo Liu, Guangsheng Huang, Fusheng PanAbstract:Abstract In the present study, Mg–3Al–1Zn (AZ31) alloy sheets were fabricated by conventional extrusion (CE) and asymmetric extrusion (AE) processes. The microstructures, textures and mechanical properties of the AE and CE AZ31 sheets were examined and compared. The results showed that a tilted weak basal texture and microstructure refinement were obtained in the AE AZ31 sheet compared with the CE AZ31 sheet. The reason for the texture weakening and microstructure refinement was ascribed to an introduction of large Effective Strain gradient throughout the normal direction during the AE process. In addition, the AE AZ31 sheet exhibited lower yield strength and r-value, but larger ductility and n-value. Improving mechanical properties for extruded AZ31 sheet were achieved by the AE process.
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Effect of Effective Strain gradient on texture and mechanical properties of Mg–3Al–1Zn alloy sheets produced by asymmetric extrusion
Materials Science and Engineering: A, 2017Co-Authors: Jiangfeng Song, Bin Jiang, Qinghang Wang, Bo Liu, Guangsheng Huang, Fusheng PanAbstract:Abstract In the present study, Mg–3Al–1Zn (AZ31) alloy sheets were fabricated by conventional extrusion (CE) and asymmetric extrusion (AE) processes. The microstructures, textures and mechanical properties of the AE and CE AZ31 sheets were examined and compared. The results showed that a tilted weak basal texture and microstructure refinement were obtained in the AE AZ31 sheet compared with the CE AZ31 sheet. The reason for the texture weakening and microstructure refinement was ascribed to an introduction of large Effective Strain gradient throughout the normal direction during the AE process. In addition, the AE AZ31 sheet exhibited lower yield strength and r-value, but larger ductility and n-value. Improving mechanical properties for extruded AZ31 sheet were achieved by the AE process.
