Aging behaviors in AZ91D/Al18B4O33, composite fabricated by squeeze casting

被引：4
作者：
Wang, W. G. [1 ]
Chang, K. C. [1 ]
Matsugi, K. [1 ]
Sasaki, G. [1 ]
机构：
[1] Hiroshima Univ, Grad Sch Engn, Dept Mech Syst Engn, Higashihiroshima 7398527, Japan
来源：
MATERIALS TRANSACTIONS | 2008年 / 49卷 / 03期
关键词：
AZ91D magnesitan alloy; aluminum borate whisker; composite; aging; precipitate; interfacial reaction;
D O I：
10.2320/matertrans.MER2007278
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Aluminum berate whisker (Al(18)B(4)O(33)w, denoted by ABO(w)) reinforced AZ91D (Mg-9.1 mass% Al-0.7 mass%Zn) magnesium alloy composite was fabricated by squeeze casting. AZ91D/ABO(w) composite and AZ91D alloy were aged at 443 K in oil-bath. The composite exhibited an accelerated age-hardening response comparing with AZ91D alloy. Age-hardening efficiency of composite was better than that of AZ91D alloy. It was attributed to the interfacial reaction between AZ91D alloy matrix and ABO(w). FThe interfacial reaction increased aluminum elements in the matrix and MgO interfacial reaction layer restrained the formation of interfacial precipitate, resulting in more amounts of continuous precipitates and smaller inter-precipitates spacing within the composite matrix.
引用
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页码：637 / 642
页数：6
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