Journal
MATERIALS LETTERS
Volume 244, Issue -, Pages 163-166Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.02.075
Keywords
Laser processing; Welding; Titanium alloy; Stainless steel; Microstructure; Interlayer
Funding
- Key Laboratory of Infrared Imaging Materials and Detectors, Shanghai Institute of Technical Physics, Chinese Academy of Sciences [IIMDKFJJ-17-06]
- China Postdoctoral Science Foundation [2015M570794, 2018T110993]
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Laser welding of TC4 titanium alloy and AISI 316L stainless steel was performed by inserting Cu/Nb bilayer. If high laser power was employed, microstructure of fusion zone of titanium alloy side was mainly composed of (Nb, Ti) solid solution, and Ti-Cu phases would be produced near fusion zone between Cu and Nb. If relatively low laser power was applied, the formation of cracks could be slightly inhibited, and microstructure in fusion zone between Cu and Nb was replaced by (Cu, Nb) solid solution. Owing to the formation of cracks, maximum tensile strength of weld joints was only 114 MPa. (C) 2019 Elsevier B.V. All rights reserved.
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