Laser welding of CP Ti to stainless steel with different temporal pulse shapes

被引：72
作者：
Chen, Hui-Chi [1 ]
Bi, Guijun [1 ]
Lee, Bing Yang [1 ]
Cheng, Chek Kweng [1 ]
机构：
[1] Singapore Inst Mfg Technol, 71 Nanyang Dr, Singapore 638075, Singapore
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2016年 / 231卷
关键词：
Laser welding; Dissimilar materials; Titanium; Stainless steel; Pulse profile; ALUMINUM; ALLOY; COPPER;
D O I：
10.1016/j.jmatprotec.2015.12.016
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CP Ti and stainless steel sheets were laser welded by using a pulsed wave Nd:YAG laser welding system. The effect of pulse profiles used in laser welding was studied by investigating weld appearance, weld geometry, microstructure, hardness variation, joint strength and failure mode of welds. Weld quality was strongly affected by the temporal pulse profile adopted in laser welding. In comparison with the use of a normal rectangular pulse profile, stronger welds with a better homogeneity and a complex fracture mode were achieved by using a ramp-down pulse profile. This quality enhancement was contributed from the less degree of intermixing between two welding materials in melting pools. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：58 / 65
页数：8
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