Butt brazing of titanium alloys/stainless steel plates by MIG-TIG double-sided arc welding process with copper filler metal | Zendy

Zhi Cheng | Zendy; Jihua Huang | Zendy; Zheng Ye | Zendy; Jian Yang | Zendy; Shuhai Chen | Zendy

Open Access

Butt brazing of titanium alloys/stainless steel plates by MIG-TIG double-sided arc welding process with copper filler metal

Author(s) -

Zhi Cheng,

Jihua Huang,

Zheng Ye,

Jian Yang,

Shuhai Chen

Publication year - 2018

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2018.06.009

Subject(s) - materials science , brazing , butt joint , filler metal , gas tungsten arc welding , metallurgy , welding , ultimate tensile strength , titanium , copper , intermetallic , composite material , arc welding , alloy

Butt brazing of titanium alloys with stainless steel by MIG-TIG double-sided arc welding (DSAW) process with copper filler metal has been performed. The microstructures and mechanical properties of the joint were investigated. The results show that a butt brazing joint with sound double-sided appearance was achieved. With low heat input of brazing mode and rapid cooling rate of arc welding process, the joint is free of brittle Ti-Fe intermetallic compounds (IMCs). The phase compositions in the joint are TC4/Ti2Cu + TiCu/TiCu + Ti5Si3/Cu + (Ti5Si3 + Cu + βTiCu4)/Fe5Si3 + (Cu) + FeSi/Fe(s,s)/304ss orderly from Ti6Al4V to 304ss. The average tensile strength of the butt joint reaches 278 MPa. Compared with the fusion welding joint, the tensile strength of the arc-brazing joint is significantly increased because of the elimination of Ti-Fe IMCs.

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