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Microstructure and Mechanical Property Improvement of Dissimilar Metal Joints for TC4 Ti Alloy to 304 Stainless Steel Using TA2/Q235 Composite Interlayer

  • Yan ZhangEmail author
  • YiDi Gao
  • JianPing Zhou
  • DaQian Sun
  • HongMei Li
Article
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Abstract

In this work, TA2/Q235 was used as an composite interlayer to prevent the formation of these brittle Ti–Fe intermetallics when joining TC4 Ti alloy to 304 stainless steel (SS). The TA2/Q235 composite interlayer was prepared by explosive welding. The laser was focused on the TC4–TA2 interface, which joined the TC4 and TA2 by fusion welding. At TC4–TA2 interface, a weld zone was formed due to the mixing of molten TC4 and TA2. The laser was focused on the Q235–304 SS interface, a weld zone was formed due to the mixing of molten Q235 and 304 SS. Composite interlayer TA/Q235 was used to prevent the formation of Ti–Fe intermetallics during welding and improve microstructure and properties of the SS–Ti alloy joint. The joint fractured at the TA2/Q235 explosive welding interface with the maximum tensile strength of 548 MPa.

Graphic Abstract

Keywords

TC4 Ti alloy 304 Stainless steel Composite interlayer Laser welding Microstructure Tensile strength 

Notes

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Copyright information

© The Korean Institute of Metals and Materials 2019

Authors and Affiliations

  • Yan Zhang
    • 1
    Email author
  • YiDi Gao
    • 1
  • JianPing Zhou
    • 1
  • DaQian Sun
    • 2
  • HongMei Li
    • 2
  1. 1.School of Mechanical EngineeringXinjiang UniversitywulumuqiChina
  2. 2.Key Laboratory of Automobile Materials, School of Materials Science and EngineeringJilin UniversityChangchunChina

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