Joining mechanism evolution of fusion welded TC4 titanium alloy/304 stainless steel dissimilar joint by GTAW

被引：8

作者：

Hao, Xiaohu ^{[1
,2
,3
,6
,7
]}

Wei, Xinlong ^{[1
]}

Li, Shuhua ^{[3
]}

Cui, Zeqin ^{[1
,2
]}

Wang, Wenxian ^{[1
,2
]}

Dong, Honggang ^{[4
]}

Li, Weiguo ^{[5
]}

机构：

[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan, Peoples R China

[2] Shanxi Zheda Inst Adv Mat & Chem Engn, Taiyuan, Peoples R China

[3] CSSC Huangpu Wenchong Shipbuilding Co Ltd, Key Enterprise Lab ShipAdvanced Welding Technol, Guangzhou, Peoples R China

[4] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian, Peoples R China

[5] Taiyuan Univ Technol, Engn Training Ctr, Taiyuan, Peoples R China

[6] Taiyuan Univ Technol, Shanxi Zheda Inst Adv Mat & Chem Engn, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

[7] CSSC Huangpu Wenchong Shipbuilding Co Ltd, Key Enterprise Lab Ship Adv Welding Technol, Guangzhou 510715, Peoples R China

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2023年 / 28卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Titanium alloy/stainless steel dissimilar joint; interfacial joining mechanism; intermetallic compounds; microstructure; tensile strength; INTERFACIAL MICROSTRUCTURE EVOLUTION; FILLER; COPPER; METAL; TI-6AL-4V; VANADIUM;

D O I：

10.1080/13621718.2023.2264572

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Gas tungsten arc welding with a pure Cu filler wire was carried out to join the TC4 titanium alloy and 304 stainless steel. Filling pure Cu filler wire assisted with regulating welding current could effectively restrain the concentrated generation of Ti-Fe brittle intermetallic compounds. Three joining modes exist in the fusion welding titanium alloy and stainless steel. In the partial fusion welding mode, the TiCu phase decreased and the fine granular tau 2 phase formed in the Ti/Cu interfacial zone, simultaneously, the molten zone consisted of a Cu solid solution and alpha-(Fe, Cr) phase formed at the Cu/Fe interface, resulting in mechanical interlocking effect and consequent high tensile strength of 363 MPa. Increasing the welding current would lead to the alloying of TixCuy phases, and then enhance the Ti/Cu interface.

引用

页码：1031 / 1040

页数：10

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