The Experts below are selected from a list of 9129 Experts worldwide ranked by ideXlab platform
Zhongqi Shi - One of the best experts on this subject based on the ideXlab platform.
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tailoring the thermophysical properties of porous sic framework reinforced al mg si composites by si Alloying Content for thermal energy management
Materials Technology, 2020Co-Authors: Zhejian Zhang, Zhilei Wei, Wenqi Xie, Yuan Yuan, Yuchen Deng, Dangui Liu, Zhongqi ShiAbstract:SiC/Al composite is a promising thermal energy management material. However, promoting the thermal conductivity (TC) and decreasing the coefficient of thermal expansion (CTE) of SiC/Al composite si...
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effect of si Alloying Content on the microstructure and thermophysical properties of sic honeycomb al mg si composites prepared by spontaneous infiltration
Ceramics International, 2020Co-Authors: Zhejian Zhang, Zhilei Wei, Wanli Yang, Wenqi Xie, Zhongqi ShiAbstract:Abstract Directional SiC honeycomb/Al–Mg–Si composites with different Si Alloying Contents (2–12 wt%) were prepared by spontaneous infiltration. The effect of Si Alloying Content on the phase composition, microstructure and thermophysical properties of the composites were investigated. The results showed that the equilibrium contact angles between the SiC ceramic and different Al alloys were in the range of 60.5–72° at 1273 K, benefitting the infiltration process. Meanwhile, the Si Alloying Content not only changed the phase composition of the composites, but also influenced the microstructure of the infiltrated Al alloys, especially changing the microstructure of Mg2Si phase from small flake-like eutectic phase (Mg2SiE) to large polygon-like primary phase (Mg2SiP). Due to the anisotropic feature of SiC honeycomb and the tunable phase composition and microstructure of the infiltrated Al alloys, the composites exhibited anisotropic and tailored thermophysical characteristics. The composites with the Si Alloying Content of 7 wt% possessed the optimum properties, with the highest TC of 140.95 W m−1 K−1 in axial direction and relatively low CTE of 11.1 × 10−6/K in radial direction. Additionally, the reduction of anisotropy of composites’ CTEs in two principal directions with the increase of Si Alloying Content was also discussed.
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Effect of Si Alloying Content on the microstructure and thermophysical properties of SiC honeycomb/Al–Mg–Si composites prepared by spontaneous infiltration
Ceramics International, 2020Co-Authors: Zhejian Zhang, Xie Wenqi, Zhilei Wei, Wanli Yang, Zhongqi ShiAbstract:Abstract Directional SiC honeycomb/Al–Mg–Si composites with different Si Alloying Contents (2–12 wt%) were prepared by spontaneous infiltration. The effect of Si Alloying Content on the phase composition, microstructure and thermophysical properties of the composites were investigated. The results showed that the equilibrium contact angles between the SiC ceramic and different Al alloys were in the range of 60.5–72° at 1273 K, benefitting the infiltration process. Meanwhile, the Si Alloying Content not only changed the phase composition of the composites, but also influenced the microstructure of the infiltrated Al alloys, especially changing the microstructure of Mg2Si phase from small flake-like eutectic phase (Mg2SiE) to large polygon-like primary phase (Mg2SiP). Due to the anisotropic feature of SiC honeycomb and the tunable phase composition and microstructure of the infiltrated Al alloys, the composites exhibited anisotropic and tailored thermophysical characteristics. The composites with the Si Alloying Content of 7 wt% possessed the optimum properties, with the highest TC of 140.95 W m−1 K−1 in axial direction and relatively low CTE of 11.1 × 10−6/K in radial direction. Additionally, the reduction of anisotropy of composites’ CTEs in two principal directions with the increase of Si Alloying Content was also discussed.
Zhejian Zhang - One of the best experts on this subject based on the ideXlab platform.
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tailoring the thermophysical properties of porous sic framework reinforced al mg si composites by si Alloying Content for thermal energy management
Materials Technology, 2020Co-Authors: Zhejian Zhang, Zhilei Wei, Wenqi Xie, Yuan Yuan, Yuchen Deng, Dangui Liu, Zhongqi ShiAbstract:SiC/Al composite is a promising thermal energy management material. However, promoting the thermal conductivity (TC) and decreasing the coefficient of thermal expansion (CTE) of SiC/Al composite si...
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effect of si Alloying Content on the microstructure and thermophysical properties of sic honeycomb al mg si composites prepared by spontaneous infiltration
Ceramics International, 2020Co-Authors: Zhejian Zhang, Zhilei Wei, Wanli Yang, Wenqi Xie, Zhongqi ShiAbstract:Abstract Directional SiC honeycomb/Al–Mg–Si composites with different Si Alloying Contents (2–12 wt%) were prepared by spontaneous infiltration. The effect of Si Alloying Content on the phase composition, microstructure and thermophysical properties of the composites were investigated. The results showed that the equilibrium contact angles between the SiC ceramic and different Al alloys were in the range of 60.5–72° at 1273 K, benefitting the infiltration process. Meanwhile, the Si Alloying Content not only changed the phase composition of the composites, but also influenced the microstructure of the infiltrated Al alloys, especially changing the microstructure of Mg2Si phase from small flake-like eutectic phase (Mg2SiE) to large polygon-like primary phase (Mg2SiP). Due to the anisotropic feature of SiC honeycomb and the tunable phase composition and microstructure of the infiltrated Al alloys, the composites exhibited anisotropic and tailored thermophysical characteristics. The composites with the Si Alloying Content of 7 wt% possessed the optimum properties, with the highest TC of 140.95 W m−1 K−1 in axial direction and relatively low CTE of 11.1 × 10−6/K in radial direction. Additionally, the reduction of anisotropy of composites’ CTEs in two principal directions with the increase of Si Alloying Content was also discussed.
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Effect of Si Alloying Content on the microstructure and thermophysical properties of SiC honeycomb/Al–Mg–Si composites prepared by spontaneous infiltration
Ceramics International, 2020Co-Authors: Zhejian Zhang, Xie Wenqi, Zhilei Wei, Wanli Yang, Zhongqi ShiAbstract:Abstract Directional SiC honeycomb/Al–Mg–Si composites with different Si Alloying Contents (2–12 wt%) were prepared by spontaneous infiltration. The effect of Si Alloying Content on the phase composition, microstructure and thermophysical properties of the composites were investigated. The results showed that the equilibrium contact angles between the SiC ceramic and different Al alloys were in the range of 60.5–72° at 1273 K, benefitting the infiltration process. Meanwhile, the Si Alloying Content not only changed the phase composition of the composites, but also influenced the microstructure of the infiltrated Al alloys, especially changing the microstructure of Mg2Si phase from small flake-like eutectic phase (Mg2SiE) to large polygon-like primary phase (Mg2SiP). Due to the anisotropic feature of SiC honeycomb and the tunable phase composition and microstructure of the infiltrated Al alloys, the composites exhibited anisotropic and tailored thermophysical characteristics. The composites with the Si Alloying Content of 7 wt% possessed the optimum properties, with the highest TC of 140.95 W m−1 K−1 in axial direction and relatively low CTE of 11.1 × 10−6/K in radial direction. Additionally, the reduction of anisotropy of composites’ CTEs in two principal directions with the increase of Si Alloying Content was also discussed.
Zhilei Wei - One of the best experts on this subject based on the ideXlab platform.
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tailoring the thermophysical properties of porous sic framework reinforced al mg si composites by si Alloying Content for thermal energy management
Materials Technology, 2020Co-Authors: Zhejian Zhang, Zhilei Wei, Wenqi Xie, Yuan Yuan, Yuchen Deng, Dangui Liu, Zhongqi ShiAbstract:SiC/Al composite is a promising thermal energy management material. However, promoting the thermal conductivity (TC) and decreasing the coefficient of thermal expansion (CTE) of SiC/Al composite si...
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effect of si Alloying Content on the microstructure and thermophysical properties of sic honeycomb al mg si composites prepared by spontaneous infiltration
Ceramics International, 2020Co-Authors: Zhejian Zhang, Zhilei Wei, Wanli Yang, Wenqi Xie, Zhongqi ShiAbstract:Abstract Directional SiC honeycomb/Al–Mg–Si composites with different Si Alloying Contents (2–12 wt%) were prepared by spontaneous infiltration. The effect of Si Alloying Content on the phase composition, microstructure and thermophysical properties of the composites were investigated. The results showed that the equilibrium contact angles between the SiC ceramic and different Al alloys were in the range of 60.5–72° at 1273 K, benefitting the infiltration process. Meanwhile, the Si Alloying Content not only changed the phase composition of the composites, but also influenced the microstructure of the infiltrated Al alloys, especially changing the microstructure of Mg2Si phase from small flake-like eutectic phase (Mg2SiE) to large polygon-like primary phase (Mg2SiP). Due to the anisotropic feature of SiC honeycomb and the tunable phase composition and microstructure of the infiltrated Al alloys, the composites exhibited anisotropic and tailored thermophysical characteristics. The composites with the Si Alloying Content of 7 wt% possessed the optimum properties, with the highest TC of 140.95 W m−1 K−1 in axial direction and relatively low CTE of 11.1 × 10−6/K in radial direction. Additionally, the reduction of anisotropy of composites’ CTEs in two principal directions with the increase of Si Alloying Content was also discussed.
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Effect of Si Alloying Content on the microstructure and thermophysical properties of SiC honeycomb/Al–Mg–Si composites prepared by spontaneous infiltration
Ceramics International, 2020Co-Authors: Zhejian Zhang, Xie Wenqi, Zhilei Wei, Wanli Yang, Zhongqi ShiAbstract:Abstract Directional SiC honeycomb/Al–Mg–Si composites with different Si Alloying Contents (2–12 wt%) were prepared by spontaneous infiltration. The effect of Si Alloying Content on the phase composition, microstructure and thermophysical properties of the composites were investigated. The results showed that the equilibrium contact angles between the SiC ceramic and different Al alloys were in the range of 60.5–72° at 1273 K, benefitting the infiltration process. Meanwhile, the Si Alloying Content not only changed the phase composition of the composites, but also influenced the microstructure of the infiltrated Al alloys, especially changing the microstructure of Mg2Si phase from small flake-like eutectic phase (Mg2SiE) to large polygon-like primary phase (Mg2SiP). Due to the anisotropic feature of SiC honeycomb and the tunable phase composition and microstructure of the infiltrated Al alloys, the composites exhibited anisotropic and tailored thermophysical characteristics. The composites with the Si Alloying Content of 7 wt% possessed the optimum properties, with the highest TC of 140.95 W m−1 K−1 in axial direction and relatively low CTE of 11.1 × 10−6/K in radial direction. Additionally, the reduction of anisotropy of composites’ CTEs in two principal directions with the increase of Si Alloying Content was also discussed.
Wanli Yang - One of the best experts on this subject based on the ideXlab platform.
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effect of si Alloying Content on the microstructure and thermophysical properties of sic honeycomb al mg si composites prepared by spontaneous infiltration
Ceramics International, 2020Co-Authors: Zhejian Zhang, Zhilei Wei, Wanli Yang, Wenqi Xie, Zhongqi ShiAbstract:Abstract Directional SiC honeycomb/Al–Mg–Si composites with different Si Alloying Contents (2–12 wt%) were prepared by spontaneous infiltration. The effect of Si Alloying Content on the phase composition, microstructure and thermophysical properties of the composites were investigated. The results showed that the equilibrium contact angles between the SiC ceramic and different Al alloys were in the range of 60.5–72° at 1273 K, benefitting the infiltration process. Meanwhile, the Si Alloying Content not only changed the phase composition of the composites, but also influenced the microstructure of the infiltrated Al alloys, especially changing the microstructure of Mg2Si phase from small flake-like eutectic phase (Mg2SiE) to large polygon-like primary phase (Mg2SiP). Due to the anisotropic feature of SiC honeycomb and the tunable phase composition and microstructure of the infiltrated Al alloys, the composites exhibited anisotropic and tailored thermophysical characteristics. The composites with the Si Alloying Content of 7 wt% possessed the optimum properties, with the highest TC of 140.95 W m−1 K−1 in axial direction and relatively low CTE of 11.1 × 10−6/K in radial direction. Additionally, the reduction of anisotropy of composites’ CTEs in two principal directions with the increase of Si Alloying Content was also discussed.
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Effect of Si Alloying Content on the microstructure and thermophysical properties of SiC honeycomb/Al–Mg–Si composites prepared by spontaneous infiltration
Ceramics International, 2020Co-Authors: Zhejian Zhang, Xie Wenqi, Zhilei Wei, Wanli Yang, Zhongqi ShiAbstract:Abstract Directional SiC honeycomb/Al–Mg–Si composites with different Si Alloying Contents (2–12 wt%) were prepared by spontaneous infiltration. The effect of Si Alloying Content on the phase composition, microstructure and thermophysical properties of the composites were investigated. The results showed that the equilibrium contact angles between the SiC ceramic and different Al alloys were in the range of 60.5–72° at 1273 K, benefitting the infiltration process. Meanwhile, the Si Alloying Content not only changed the phase composition of the composites, but also influenced the microstructure of the infiltrated Al alloys, especially changing the microstructure of Mg2Si phase from small flake-like eutectic phase (Mg2SiE) to large polygon-like primary phase (Mg2SiP). Due to the anisotropic feature of SiC honeycomb and the tunable phase composition and microstructure of the infiltrated Al alloys, the composites exhibited anisotropic and tailored thermophysical characteristics. The composites with the Si Alloying Content of 7 wt% possessed the optimum properties, with the highest TC of 140.95 W m−1 K−1 in axial direction and relatively low CTE of 11.1 × 10−6/K in radial direction. Additionally, the reduction of anisotropy of composites’ CTEs in two principal directions with the increase of Si Alloying Content was also discussed.
Chaorong Sun - One of the best experts on this subject based on the ideXlab platform.
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modulation of the natural aging effect on subsequent artificial aging in al mg si aluminum alloys with Alloying Content 1 wt through temperature tuning
Journal of Alloys and Compounds, 2020Co-Authors: Wenkang Zhang, Chaorong SunAbstract:Abstract In this paper, the influence of the natural aging (NA) on the subsequent artificial aging (AA) process in Al–Mg–Si aluminum alloys with Alloying Content ∼1 wt% was studied. Methods including various aging, hardness testing, transmission electron microscope (TEM), atom probe tomography (APT) etc, were employed. The results show that the NA before AA affects the AA precipitation process adversely under lower AA temperatures, e.g. 150 °C, by suppressing the peak aging hardness, while such effect can be modulated to be positive by increasing AA temperature to over 175 °C. Under higher AA temperatures, transformation of clusters into main strengthening precipitates, β″ phase for example, is promoted. The nucleation probability of these phases is enhanced, through lowering the nucleation energy barrier. As a result, the NA clusters facilitate nucleation and growth of the main precipitates during AA. The overall results proved that the NA effect on the subsequent AA process in the Al–Mg–Si aluminum alloys with Alloying Content about 1% can be modulated by tuning the AA temperature.
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Modulation of the natural aging effect on subsequent artificial aging in Al–Mg–Si aluminum alloys with Alloying Content ∼ 1 wt% through temperature tuning
Journal of Alloys and Compounds, 2020Co-Authors: Wenkang Zhang, Chaorong SunAbstract:Abstract In this paper, the influence of the natural aging (NA) on the subsequent artificial aging (AA) process in Al–Mg–Si aluminum alloys with Alloying Content ∼1 wt% was studied. Methods including various aging, hardness testing, transmission electron microscope (TEM), atom probe tomography (APT) etc, were employed. The results show that the NA before AA affects the AA precipitation process adversely under lower AA temperatures, e.g. 150 °C, by suppressing the peak aging hardness, while such effect can be modulated to be positive by increasing AA temperature to over 175 °C. Under higher AA temperatures, transformation of clusters into main strengthening precipitates, β″ phase for example, is promoted. The nucleation probability of these phases is enhanced, through lowering the nucleation energy barrier. As a result, the NA clusters facilitate nucleation and growth of the main precipitates during AA. The overall results proved that the NA effect on the subsequent AA process in the Al–Mg–Si aluminum alloys with Alloying Content about 1% can be modulated by tuning the AA temperature.
