Comparison of microstructure and mechanical properties of TIG and laser welding joints of a new Al-Zn-Mg-Cu alloy
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- 作者：Liang Zhang ; zhangliang0202@163.com" class="auth_mail" title="E-mail the corresponding author ; Xiaoyan Li ; Zuoren Nie ; Hui Huang ; Lanqiang Niu
- 关键词：Al&ndash ; Zn&ndash ; Mg&ndash ; Cu alloy ; Welding ; TIG ; Laser ; Microstructure ; Mechanical properties
- 刊名：Materials & Design
- 出版年：2016
- 出版时间：15 February 2016
- 年：2016
- 卷：92
- 期：Complete
- 页码：880-887
- 全文大小：2223 K
文摘
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The width of the FZ and HAZ in laser joint is obviously smaller.
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The mean grain size of FZ in TIG and laser joint is 33.9 μm and 6.1 μm respectively.
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Both the minimum microhardness is obtained in the FZ with almost the same value.
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The microhardness of HAZ in laser joint is higher than that of the TIG joint.
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The ultimate tensile strength of TIG and laser joint is 436.2 MPa and 471.1 MPa.