Deformation Mechanism of SUS304 Austenitic Stainless Steel at Weldless Side in Partial Penetration Laser Welding

被引：0
|
作者：
Liu Enze [1 ,2 ]
Yao Chengwu [1 ,2 ]
Xie Yuling
Zhang Xudong
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China
[2] Hitachi China Res & Dev Corp, Shanghai 200020, Peoples R China
来源：
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG | 2019年 / 46卷 / 04期
关键词：
laser technique; partial penetration laser welding; micro bulging distortion; deformation mechanism; angular distortion; plastic deformation; PREDICTION; SHEETS;
D O I：
10.3788/CJL2019/16.0102001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Partial penetration laser welding experiment of DC01 galvanized steel plate and SUS301 austenite stainless steel as well as pre-deformation experiment arc conducted by fiber laser. The deflection and deformation profile of SUS301 steel plate (lower plate) arc measured and the mechanism of the micro bulging distortion of SUS301 steel plate surface after partial penetration laser welding. The results show that angular distortion is an important reason that lead to the micro bulging distortion of austenite stainless steel surface. Pre-deformation can decrease the maximum deformation height significantly. However, the plastic bulging distortion still occurs in micro bulging distortion arca. It is concluded that the main reason of micro bulging distortion of SUS301 steel plate at weldless side in partial penetration laser welding is the combination of angular distortion and plastic deformation caused by thermal expansion during welding.
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页数：9
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