Precipitation hardening behavior of Al-4Cu-1.3Mg-0.9Si alloy

被引：0

作者：

Zeng, Yan-Qi ^{[1
]}

Wang, Feng ^{[1
]}

Xiong, Bai-Qing ^{[1
]}

Zhang, Yong-An ^{[1
]}

Li, Xi-Wu ^{[1
]}

Li, Zhi-Hui ^{[1
]}

Liu, Hong-Wei ^{[1
]}

机构：

[1] State Key Laboratory for Fabrication and Processes of Nonferrous Metals, General Research Institute for Nonferrous Metals

来源：

Hangkong Cailiao Xuebao/Journal of Aeronautical Materials | 2012年 / 32卷 / 03期

关键词：

Al-Cu-Mg-Si alloy; Mechanical properties; Microstructure; Precipitation hardening;

D O I：

10.3969/j.issn.1005-5053.2012.3.001

中图分类号：

学科分类号：

摘要：

The Precipitation hardening behavior of Al-4Cu-1.3Mg-0.9Si during the aging was investigated by hardness measurement, differential scanning calorimetry (DSC) analyses, tensile test and microstructure analyses. The results show that the alloy exhibited a superior precipitation hardening ability. The aging response rate was greatly accelerated with elevating the aging temperature from 160°C to 220°C, and the peak hardness was remarkably decreased. The major strengthening precipitates of the alloy aging at 190 °C was the S phase. After ageing at 190°C for 24h, the precipitates of the alloy were S phase with a small amount of cubic phase. Comparing with Al-4Cu-1.3Mg alloy prepared under the same conditions, the Al-4Cu-1.3Mg-0.9Si alloy exhibited superior tensile strengths at room and elevated temperature.

引用

页码：1 / 4

页数：3

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