Effect of Cu/V multi-interlayer on the microstructure and mechanical properties of TC4/IN718 joint by laser welding

被引：0
|
作者：
Zhu, Qiang [1 ]
Xia, Yang [1 ]
Zhang, Xingyue [1 ]
Han, Ke [1 ]
Yan, Yaojing [1 ]
Ding, Yuanyi [1 ]
Lei, Yucheng [1 ]
机构：
[1] School of Materials Science and Engineering, Jiangsu University, Zhenjiang,212013, China
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2024年 / 45卷 / 07期
关键词：
Binary alloys - Copper alloys - Cracks - Laser beam welding - Nickel compounds - Tensile strength - Titanium alloys - Titanium compounds - Welds;
D O I：
10.12073/j.hjxb.20230714002
中图分类号：
学科分类号：
摘要：
In order to realize the effective connection between TC4 and GH4169 alloy, the Cu/V multi-interlayer was applied to join TC4 and IN718 alloy by continuous laser welding. The regulating mechanism of the Cu/V multi-interlayer on the cracks, microstructure and mechanical properties of TC4/IN718 joint was analyzed. The results show that a large number of Ti-Ni brittle intermetallic compounds are generated in the weld area of TC4/IN718 joint with the conventional laser welding, resulting in the formation of a large number of longitudinal cracks in the joint. The microstructure structure of weld zone in the TC4/IN718 joint is comprised of Ti(s,s) + Ti2Ni + Ti-Cr + NiTi + Ni3Ti + Cr(s,s). When adopting the Cu/V multi-interlayer, the effective joining between TC4 and IN718 alloy is realized, the tensile strength of the joint reaches 271MP. The microstructure structure of weld zone in the TC4/ Cu/V/IN718 joint is transformed into Ti(s,s) + V(s,s) + NiV3 + Cr(s,s) + Cu(s,s) + unmelted copper. © 2024 Harbin Research Institute of Welding. All rights reserved.
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页码：34 / 40
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