Resistance Spot Welding of Dissimilar Materials of Austenitic Stainless Steels and IF (Interstitial Free) Steels

被引：1
|
作者：
Lee, Jin-Bum [1 ]
Nam, Dae-Geun [2 ]
Kang, Nam-Hyun [3 ]
Kim, Yang-Do [3 ]
Oh, Weontae [4 ]
Park, Yeong-Do [1 ]
机构：
[1] Dong Eui Univ, Dept Adv Mat Engn, Busan 341714, South Korea
[2] Korea Inst Ind Technol, Dongnam Technol Serv Div, Busan 618230, South Korea
[3] Pusan Natl Univ, Dept Mat Sci & Engn, Busan 609735, South Korea
[4] Dong Eui Univ, Dept Nano Engn, Busan 341714, South Korea
来源：
KOREAN JOURNAL OF MATERIALS RESEARCH | 2009年 / 19卷 / 07期
关键词：
resistance spot welding; dissimilar materials; austenitic stainless steels; dilution; low carbon galvanized steels;
D O I：
10.3740/MRSK.2009.19.7.369
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The spot weldability of dissimilar metal joints between stainless steels (AISI316) and interstitial free (IF) steels were investigated. This study was aimed to determine the spot welding parameters for a dissimilar metal joint and to evaluate the dissimilar metal joint's weldability, including its welding nugget shape, tensileshear strength, hardness, and microstructure. The fracture surface was investigated by using a Scanning Electron Microscopy (SEM). The experimental results showed that the shape of nugget was asymmetric, in which the fusion zone of the STS316 sheet was larger due to the higher bulk-resistance. The microstructure of the fusion zone was fully martensite. In order to evaluate the microstructure further, dilution of stainless steels were calculated and imposed onto the Schaeffler diagram. The predicted microstructure from the Schaeffler diagram was martensite. In order to confirm the predicted microstructure, XRD measurements were carried out. The results showed that that initial weld nugget was composed of austenite and martensite.
引用
收藏
页码：369 / 375
页数：7
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