简介概要

Influence of Zn Content on Microstructures, Mechanical Properties and Stress Corrosion Behavior of AA5083 Aluminum Alloy

来源期刊:Acta Metallurgica Sinica2020年第10期

论文作者:Zhixiong Zhu Xingxu Jiang Gang Wei Xiaogang Fang Zhihong Zhong Kuijing Song Jian Han Zhengyi Jiang

文章页码:1369 - 1378

摘    要:To enhance the stress corrosion cracking(SCC) resistance, Zn was utilized as an alloy element to add in the AA5083 aluminum alloys. The effects of Zn content on the microstructures, mechanical properties and SCC resistance were systematically evaluated. The results demonstrate that in the studied range adding Zn can significantly improve the SCC resistance of the AA5083 alloys. This is related to the relatively low amount of continuous β(Al3Mg2) phase along grain boundary and the formation of Zn-containing phase such as Al5Mg11Zn4 phase. Based on the results, the optimal Zn content with respect to SCC resistance is approximately 0.50 wt.%. Further increasing Zn content results in coarse precipitates discontinuously distributed along grain boundaries.

详情信息展示

Influence of Zn Content on Microstructures, Mechanical Properties and Stress Corrosion Behavior of AA5083 Aluminum Alloy

Zhixiong Zhu1,Xingxu Jiang1,Gang Wei1,Xiaogang Fang1,Zhihong Zhong1,Kuijing Song1,Jian Han2,Zhengyi Jiang3

1. School of Materials Science and Engineering,Hefei University of Technology2. School of Materials Science and Engineering,Tianjin University of Technology3. School of Mechanical Engineering and Automation,University of Science and Technology Liaoning

摘 要:To enhance the stress corrosion cracking(SCC) resistance, Zn was utilized as an alloy element to add in the AA5083 aluminum alloys. The effects of Zn content on the microstructures, mechanical properties and SCC resistance were systematically evaluated. The results demonstrate that in the studied range adding Zn can significantly improve the SCC resistance of the AA5083 alloys. This is related to the relatively low amount of continuous β(Al3Mg2) phase along grain boundary and the formation of Zn-containing phase such as Al5Mg11Zn4 phase. Based on the results, the optimal Zn content with respect to SCC resistance is approximately 0.50 wt.%. Further increasing Zn content results in coarse precipitates discontinuously distributed along grain boundaries.

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