SFSW和DFSW中圆柱销锥角对AA6061-T6合金力学性能的影响

IF 3.4 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Mahdi Kazemi, Amir Ghiasvand
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引用次数: 1

摘要

本文针对AA6061-T6铝合金试件进行了SFSW、对称DFSW和非对称DFSW三种加工工艺,研究了刀销锥角对试样力学性能和显微硬度的影响。在上述的每一种焊接工艺中,都使用具有5种不同圆锥角的工具,分别为0°、5°、10°、15°和20°。在这三种焊接工艺中,与使用简单圆柱销(0°角)的焊接工具相比,使用锥形刀具的最终焊接接头的力学性能得到了明显提高。结果表明,非对称DFSW、对称DFSW和SFSW分别具有最佳的力学性能。SFSW、对称DFSW和非对称DFSW的最佳锥角分别为15°、10°和10°。此外,通过锥角为10°的非对称DFSW焊接试样获得了最接近母材的力学性能。该样品的YS、UTS和E%分别为基础样品的78.3%、84.8%和86.4%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of cone angle of cylindrical pin in the SFSW and DFSW on mechanical properties of AA6061-T6 alloy

Effect of cone angle of cylindrical pin in the SFSW and DFSW on mechanical properties of AA6061-T6 alloy

In the present study, the effect of cone angle of tool pin on the mechanical properties and microhardness properties of aluminum alloy AA6061-T6 specimens is investigated for three processes of SFSW, symmetric DFSW, and asymmetric DFSW. In each of the mentioned welding processes, tools with 5 different conical angles of 0, 5, 10, 15, and 20° are used. In these three welding processes, the mechanical properties of the final welded joint with conical tools have been enhanced noticeably compared to the tool with simple cylindrical pins (0° angle). Based on the obtained results, it was found that the joints obtained from asymmetric DFSW, symmetric DFSW, and SFSW had the best mechanical properties, respectively. The optimum cone angles for tool pin in SFSW, symmetric DFSW, and asymmetric DFSW processes were equal to 15, 10, and 10°, respectively. In addition, it was concluded that the welded specimen through the asymmetric DFSW with the cone angle of 10° attained the closest mechanical properties to the base (parent) metal. The parameters of YS, UTS, and E% in this sample were 78.3%, 84.8%, and 86.4% of the base sample, respectively.

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来源期刊
CiteScore
8.60
自引率
0.00%
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审稿时长
13 weeks
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