Thermal Stability of Microstructure and Mechanical Properties of High Pressure Solidified Al2O3/Al-10Si

被引：0
|
作者：
Zhu, Dongdong [1 ,2 ]
Chen, Zhipeng [1 ,2 ]
Dong, Duo [1 ]
Wang, Gang [2 ]
Wang, Xiaohong [1 ]
Zhang, Yanheng [1 ,2 ]
机构：
[1] Key Laboratory of Air-driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou,324000, China
[2] School of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu,241000, China
来源：
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2020年 / 49卷 / 09期
关键词：
Precipitation (chemical) - Heat treatment - Thermodynamic stability - Solidification - Alumina - Aluminum oxide - Compressive strength - Supersaturation;
D O I：
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学科分类号：
摘要：
Al2O3/Al-10Si composites were prepared by high pressure solidification at 3, 4, 5 GPa, and then heat treated at 160℃ for 2, 4, and 6 h. Thermal stability of microstructure and mechanical properties of the Al2O3/Al-10Si composites under high pressure were studied. The results indicate that heat treatment leads to the precipitation of Si particles due to the supersaturation in α phase. The precipitation of Si causes a decrease in supersaturation. The compression strength and ration show a slight increase after heat treatment due to the combination of precipitation strengthening and solid solution strengthening. At 160℃/4 h, Al2O3/Al-10Si composites exhibit the best mechanical properties. After solidified under 5 GPa and heat treatment at 160℃/4 h, Al2O3/Al-10Si composites get the maximum compressive strength which is about 716 MPa. © 2020, Science Press. All right reserved.
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页码：3260 / 3264
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