过饱和度
材料科学
溶解
合金
降水
铝
固溶体
维氏硬度试验
冶金
极限抗拉强度
电子背散射衍射
粒度
沉淀硬化
化学工程
微观结构
化学
有机化学
气象学
工程类
物理
作者
Yu Zheng,Guoyi Tang,J. Kuang,Xiu-Peng Zheng
标识
DOI:10.1016/j.jallcom.2014.07.062
摘要
A facile method for solid-solution treatment of 6061 Al alloys by using electropulse, namely electropulsing solution treatment (EPST) is explored in this study. Compared with the conventional solution treatment (CST), the EPST tremendously improves the dissolution rate. The dissolution process completes in 15 s. The EBSD analysis shows that the recrystallized grain sizes of EPST samples are finer and more uniform than the CST samples. The XRD analysis indicates higher supersaturation degree is achieved by EPST. Higher supersaturation degree leads to the formation of denser precipitation in the aging process. As a result, the EPST-aged samples get a 6.8% increase in tensile strength and a 7.2% increase in Vickers hardness compared with the CST-aged samples.
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