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Tensile and Fracture Properties of 15?vol% SiCp/2009Al Composites Fabricated by Hot Isostatic Pressing and Hot Extrusion Processes
- 作者:Junhui Nie (1)
Jianzhong Fan (1) Shaoming Zhang (1) Shaohua Wei (1) Tao Zuo (1) Zili Ma (1) Zhaobing Xiang (1)
- 关键词:Aluminum matrix composites ; Silicon carbide ; Tensile properties ; Facture toughness ; Particle size
- 刊名:Acta Metallurgica Sinica (English Letters)
- 出版年:2014
- 出版时间:October 2014
- 年:2014
- 卷:27
- 期:5
- 页码:875-884
- 全文大小:1,593 KB
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1. General Research Institute for Nonferrous Metals, Beijing, 100088, China
- ISSN:2194-1289
文摘
15?vol% silicon carbide particle (SiCp)-reinforced 2009Al matrix (15?vol% SiCp/2009Al) composites were fabricated by hot isostatic pressing (HIP) and hot extrusion processes. The tensile and fracture properties of 15?vol% SiCp/2009Al were studied. The results showed that hot extrusion increased the ultimate tensile strength (UTS), yield strength (YS), elongation (EL), reduction in area (RA), and fracture toughness of the composites. The heat treatment resulted in the increase in UTS, YS, and fracture toughness, but a decrease in EL and RA. Both hot extrusion and heat treatment had negligible effects on elastic modulus (E). With the increase of SiCp size, the UTS, YS, and E decreased, but the EL and RA increased. The fracture toughness increased first and then decreased with increasing SiCp size, and when the SiCp size was about 7?μm, the composites obtained the maximum fracture toughness value of 31.74?MPa?m1/2.
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