文献类型：期刊文献

英文题名：Microstructure and Mechanical Properties of Laser Oscillated Welded DP780 Dual Phase Steel and 5083 Aluminium Alloy: Scanning Oscillations at the Same Laser Power

作者：Ba, Y.[1,2];Shi, W-Q[1];Han, S-G[2];Huang, J-Y[1];Xie, Y-P[1];Huang, J.[1];He, K-F[3]

机构：[1]Guangdong Ocean Univ, Coll Elect & Informat Engn, 1 Haida Rd, Zhanjiang 524088, Guangdong, Peoples R China;[2]Guangdong Acad Sci, China Ukraine Inst Welding, 100 Xianlie Cent Rd, Guangzhou 510650, Guangdong, Peoples R China;[3]Foshan Univ, Sch Mechatron Engn & Automat, 18 Jiangwan 1st Rd, Foshan 528225, Guangdong, Peoples R China

年份：2022

卷号：52

期号：1-3

起止页码：169

外文期刊名：LASERS IN ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000763476400011)、、EI(收录号：20221712030300)、Scopus(收录号：2-s2.0-85128715364)、WOS

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 62073089), the Special Fund for Key Projects of Colleges and Universities in Guangdong Province (Grant No. 2020ZDZX2061), the Guangdong Academy of Sciences Foundation (Grant Nos. 2019GDA-SYL-0501011 and 2018GDASCX-0803) and the Guangzhou Economic and Technological Development Zone Science and Technology Fund (Grant No. 2019GH19). The authors would like to thank Wen Qing Shi and Shan Guo Han for their help in the writing and proofreading of this paper, as well as Mr. David Couzens for his native English copyediting service.

语种：英文

外文关键词：Disk laser; DP780 dual phase steel; 5083 Al; laser welding; laser oscillating welding; steel-Al dissimilar joints; macrostructure; microstructure; mechanical properties

外文摘要：To study the effect of laser swing welding on steel-Al welded joints, three different scanning paths were used to weld DP780 dual phase steel and 5083 Al thin plates with a fibre laser. The results show that the oscillating welded joint with the same power has a smaller depth-to-width ratio than the linear welded joint. Laser oscillating welding can refine the grain of the welded joint by disturbing the molten pool, promote uniform mixing of steel and Al reduce defects, and improve the mechanical properties of the welded joint. The microhardness test reveals that the microhardness of the weld zone (WZ) of the three scanning paths is higher than that of the base material (BM); the microhardness of the joint welded in the spiral mode is the highest, and that of the steel side joint and the Al side joint can reach 365 and 302 HV, respectively. The tensile strength of the joint welded in the zigzag mode is the best, and the shear strength per unit length can reach 137 N/mm.