저항 점 용접을 이용한 AISI 316 스테인레스강과 용융아연도금 강판의 이종접합

이진범; 남대근; 강남현; 김양도; 오원태; 박영도; Jin-Bum Lee; Dae-Geun Nam; Nam-Hyun Kang; Yang-Do Kim; Weontae Oh; Yeong-Do Park

Korean Journal of Materials Research, Vol.19, No.7, 369-375, July, 2009

DOI10.3740/MRSK.2009.19.7.369 Export Citation

저항 점 용접을 이용한 AISI 316 스테인레스강과 용융아연도금 강판의 이종접합

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

이진범, 남대근¹, 강남현 ², 김양도 ², 오원태², 박영도^†

동의대학교 공과대학 신소재 공학과
¹한국생산기술연구원 동남권지원센터
²부산대학교 공과대학 재료공학과

Jin-Bum Lee, Dae-Geun Nam¹, Nam-Hyun Kang², Yang-Do Kim², Weontae Oh³, and Yeong-Do Park^†

Department of Advanced Materials Engineering, Dong-Eui University, Busan 341-714, Korea
¹Dongnam Technology Service Division, Korea Institute of Industrial Technology, Busan 618-230, Korea
²Department of Materials Science and Engineering, Pusan National University, Busan 609-735, Korea
³Department of Nano Engineering, Dong-Eui University, Busan 341-714, Korea

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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.

Keywords:resistance spot welding;dissimilar materials;austenitic stainless steels;dilution;low carbon galvanized steels

[References]

Kim JK, Woo IS, Jeong B, Lee JB, Kor. J. KWS, 24(6), 124 (2006)
Shamsul JB, Hisyam MM, J. of App. Sci. Res., 3(11), 1494 (2007)
Park SS, Lee SM, Cho YJ, Kang NH, Yu JH, Kim YS, Park YD, J. Kor. Inst. Met. Mater., 46(10), 672 (2008)
Milititsky M, Pakalnins E, Jiang C, Thompson AK, in Proceeding of the SAE World Congress (Detroit, Michigan, April 2003). ed. S. H. Lalam (SAE International, Warrendale, PA, USA 2003) p. 45-51 (2003). (2003)
Marashi P, Pouranvari M, Amirabdollahian S, Abedi A, Goodarzi M, Mater. Sci. and Eng. A, 480, 175 (2008)
Liu W, He J, Fan M, Lu P, Shao L, J. Mater. Sci. Tech., 23(3), 319 (2007)

[Referenced By]

[Related Articles]

[1] Kim JK, Woo IS, Jeong B, Lee JB, Kor. J. KWS, 24(6), 124 (2006)

[2] Shamsul JB, Hisyam MM, J. of App. Sci. Res., 3(11), 1494 (2007)

[3] Park SS, Lee SM, Cho YJ, Kang NH, Yu JH, Kim YS, Park YD, J. Kor. Inst. Met. Mater., 46(10), 672 (2008)

[4] Milititsky M, Pakalnins E, Jiang C, Thompson AK, in Proceeding of the SAE World Congress (Detroit, Michigan, April 2003). ed. S. H. Lalam (SAE International, Warrendale, PA, USA 2003) p. 45-51 (2003). (2003)

[5] Marashi P, Pouranvari M, Amirabdollahian S, Abedi A, Goodarzi M, Mater. Sci. and Eng. A, 480, 175 (2008)

[6] Liu W, He J, Fan M, Lu P, Shao L, J. Mater. Sci. Tech., 23(3), 319 (2007)