文献类型：期刊文献

英文题名：Interface Characterization and Mechanical Properties of Dual Beam Laser Welded Steel/Al Joints

作者：Ba, Y.[1,2,3];Ren, X-h.[2];Huang, J-y.[1];Shi, W-q.[1]

机构：[1]Guangdong Ocean Univ, Coll Elect & Informat Engn, Haida Rd, Zhanjiang, Guangdong Prov, Peoples R China;[2]Guangdong Acad Sci, China Ukraine Inst Welding, 100 Xianlie Cent Rd, Guangzhou 510650, Guangdong Prov, Peoples R China;[3]South China Normal Univ, Sch Informat Optoelect Sci & Technol, Guangzhou 510006, Guangdong, Peoples R China

年份：2024

卷号：57

期号：1-3

起止页码：143

外文期刊名：LASERS IN ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001222196900011)、、EI(收录号：20241015669063)、Scopus(收录号：2-s2.0-85186400171)、WOS

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 62073089) , the National Key Research and Development Program of China (Grant No. 2020YFE0205300) and the Yangjiang Provincial Science and Technology Special Fund project (SDZX2020007, SDZX2021010) . The authors would like to thank Wen Qing Shi and Shan Guo Han for their help in the writing and proofreading of this article, as well as Mr. David Couzens (senior American copyeditor) from New Bridge Translation Company Ltd., Guangzhou, China, for his professional copyediting services with academic integrity.

语种：英文

外文关键词：Disk laser; DP780 dual phase steel; 5083 Al alloy; dual beam laser welding (DBLW); dissimilar joints; macrostructure; microstructure; mechanical properties; heat affected zone (HAZ); intermetallic compounds (IMCs)

外文摘要：The laser lap welding method using a disk laser with a dual beam laser welding (DBLW) configuration was used to join DP780 dual phase steel and 5083 Al alloy. The macrostructure and microstructure were observed and it was found that there were five different intermetallic compounds (IMCs) formed in the steel/Al interface. The mechanical properties of the laser welded joints were tested and the relationships between the mechanical properties, microstructure, welding parameters and the failure modes for the joints at different laser energy densities were established. At low and high welding speeds the steel/Al joint has two different fracture modes. The failures occurred in the heat affected zone (HAZ) of weld seam and the interface of steel/Al joint, respectively. These two failure modes were ductile fracture and brittle fracture, with cleavages occurring in fracture surfaces.