Dissimilar Metal Joining of 2024 and 7075 Aluminium Alloys to Titanium Alloys by Friction Stir Welding

被引：85

作者：

Aonuma, Masayuki ^{[1
]}

Nakata, Kazuhiro ^{[2
]}

机构：

[1] Tokyo Metropolitan Ind Technol Res Inst, Tokyo 1158586, Japan

[2] Osaka Univ, Joining & Welding Res Inst, Osaka 5670047, Japan

来源：

MATERIALS TRANSACTIONS | 2011年 / 52卷 / 05期

关键词：

friction stir welding; dissimilar metal joining; aluminum alloy; titanium alloy; intermetallic compound;

D O I：

10.2320/matertrans.L-MZ201102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The friction stir welding (FSW) process is a solid-state joining process and the joining temperature is lower than that used in the fusion welding processes. Therefore, for dissimilar metal welding, FSW is considered to offer several advantages over fusion welding. The present work investigated the weldability of duralumin and titanium alloys using friction stir welding. The aluminum plates used in this work were 2024-T3 and 7075-T651, and the titanium plates used were pure titanium and Ti-6Al-4V. The average tensile strength of the Ti/2024 FSW joints was 311 MPa, and the tensile strength of the Ti/2024 joint was higher than that of the Ti/7075 FSW joint when the joining conditions were the same. A mixed region of Ti alloy and Al alloy was observed at the joint interface, and the joints mainly fractured at this region, where there was an intermetallic compound layer. In this region, a TiAl3 intermetallic compound was detected by XRD. Therefore, it can be understood that this TiAl3 intermetallic compound affects the tensile strength of butt joints. [doi:10.2320/matertrans.L-MZ201102]

引用

页码：948 / 952

页数：5

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