材料工程Issue(11)：47-51,5.
Al-Cu-Mg-Ag耐热铝合金断续时效处理研究
Study on the Interrupted Aging Treatment of Al-Cu-Mg-Ag Heat-resistant Alloy
摘要
Abstract
The effects of the interrupted aging treatment on the microstructure and the properties of the Al-Cu-Mg-Ag alloy were studied by means of HV hardness tests, tensile testing and transmission electron microscopy (TEM) , respectively. The results show that the lower secondary aging temperature for interrupted aging process accelerated the precipitations of 8 but restrained the precipitations of Ω. And correspondingly, it decreased the strength of the alloy and increased the elongation of the alloy. Whereas the higher secondary aging temperature accelerated the precipitations of Ω and refined its size, but restrained the precipitations of θ', and it could also modify the distribution of the particles on the grain boundaries which led to the enhanced strength and elongation of the alloy. The suitable interrupted aging process for Al-Cu-Mg-Ag alloy was 185℃/2h+150℃/6h.关键词
Al-Cu-Mg-Ag合金/耐热铝合金/断续时效/微观组织Key words
Al-Cu-Mg-Ag alloy/ heat-resistant alloy interrupted aging/ microstructure分类
矿业与冶金引用本文复制引用
潘清林,刘晓艳,曹素芳,陆智伦,何运斌..Al-Cu-Mg-Ag耐热铝合金断续时效处理研究[J].材料工程,2012,(11):47-51,5.基金项目
中南大学优秀博士学位论文扶植基金项目(2008yb012) （2008yb012）
