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.

引用

页码：34 / 40

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