Effects of Mg content on aging behavior of sub-micron Al2O3p/Al-Cu-Mg composites

被引：0
|
作者：
Jiang Long-tao [1 ]
Zhu De-zhi [1 ]
Chen Guo-qin [1 ]
Xi Zi-yang [1 ]
Wu Gao-hui [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Technol, Harbin 150001, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2006年 / 16卷
关键词：
aluminum matrix composites; sub-micron Al2O3 particles; aluminum alloys; aging behavior;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
30%Al2O3p/Al-Cu-2.0Mg composite and Al2O3p/Al-Cu-2.5Mg composite with 0.3 mu m-Al2O3 particles were fabricated. Age-hardening behaviors of two composites and the related matrix alloys were studied by means of Brinell-hardness measurement, DSC and TEM. The results show that the hardness of the composite is improved obviously because of the addition of sub-micron Al2O3 particles. But the hardness increment of Al2O3/Al composite after aging is lower than that of the related matrix alloy. Moreover, the formation of GP region is suppressed by the addition of sub-micron Al2O3 particles, which broadens the exothermic peak of S' phase. The increment of Mg content has a different influence on accelerating the aging processes of aluminum alloys and the composites, and the hardness also increases.
引用
收藏
页码：S1557 / S1561
页数：5
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