Effect of interfacial reaction on tensile and creep behaviors of aluminum-borate-whisker-reinforced AA6061 composite

被引：7
作者：
Ma, ZY
Tjong, SC
Geng, L
Wang, ZG
机构：
[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
[2] Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China
[3] Acad Sinica, Inst Met Res, State Key Lab Fatigue & Fracture Mat, Shenyang 110015, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH | 2000年 / 15卷 / 12期
关键词：
D O I：
10.1557/JMR.2000.0390
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Aluminum-borate (AlBO) whisker-reinforced AA6061 composite fabricated by squeeze casting was subjected to both tensile and creep investigations. The whisker exhibited a significant reinforcing effect on as-extruded AA6061, but not for TG-treated specimen. The yield strength of the composite decreased slightly after T6 treatment. This was caused by the degradation of the whiskers and microcrack initiation. The incorporation of the AlBO whisker into the AA6061 improved the creep resistance of the alloy by several orders of magnitude. Moreover, the composite exhibited higher values of apparent stress exponent and apparent activation energy for both the static and cyclic creep. Finally, cyclic creep retardation behavior was observed for both reinforced and unreinforced AA6061.
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页码：2714 / 2729
页数：16
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