Liquid metal embrittlement of galvanized steel and its performance during resistance spot welding

被引：1
作者：
Chen Ting [1 ,2 ]
Ling Zhan-xiang [1 ,2 ]
Wang Min [1 ,2 ]
Kong Liang [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China
[2] Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China
来源：
CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING | 2020年 / 48卷 / 04期
关键词：
liquid metal embrittlement; galvanized steel; hot tensile test; resistance spot welding; ZINC-COATED STEEL; CRACK-PROPAGATION; WELDED-JOINTS;
D O I：
10.11868/j.issn.1001-4381.2019.000657
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Liquid metal embrittlement is a phenomenon that when a solid metal or alloy with toughness is in direct contact with a liquid metal and a tensile stress is applied, its plasticity decreases and brittle fracture occurs. Liquid metal embrittlement occurs in steels when in contact with liquid zinc, which has been confirmed in the hot tensile test of galvanized steel. In addition, researchers have found that liquid metal embrittlement may also occur during the resistance spot welding of galvanized high-strength steels. It appears that there are a large number of cracks on the surface of the weld spots. These cracks are potentially harmful to the performance of joints. The hot tensile test of the liquid metal embrittlement of galvanized steel was reviewed, the experimental factors that affect the liquid metal embrittlement were clarified, the research progress of liquid metal embrittlement in galvanized steel during resistance spot welding was summarized, and the location of cracks and its influencing factors were analyzed, and possible solutions were summarized.
引用
收藏
页码：89 / 99
页数：11
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