Effects of Processing Parameters on the Friction Stir Spot Joining of Al5083-O Aluminum Alloy to DP590 Steel

다국어 초록 (Multilingual Abstract)

Two dissimilar materials, aluminum alloy Al5083-O and advanced high strength steel DP590, were successfullyjoined by using friction stir spot joining (FSSJ). Satisfactory joint strengths were obtained at a rotational speed of300 rpm and a plunge depth of 0.7 mm. Resulting joints were welded without a non-welded zone. This may beattributed to the enhanced smooth material flow owing to sufficient stirring effect and tool down force between theupper Al5083-O side and the lower DP590 side. The maximum tensile shear strength was 6.5 kN, which washigher than the joint strength required by the conventional method of resistance spot welding. The main fracturemode was plug fracture in the tensile shear test of joints. An intermetallic compound (IMC) layer with <6 μm thicknesswas formed at the joint interface, which meets the allowance value of <10 μm for the dissimilar material Al-Fejoints. Thus, the use of FSSJ to weld the dissimilar materials Al5083-O and DP590 resulted in mechanically andmetallurgically sound joints.

참고문헌 (Reference)

1 S. H. Chowdhury, 562 : 53-, 2013

2 T. Y. Pan, 1416-, 2004

3 C. K. Chun, 21 : 281-, 2007

4 H. S. Bang, 37 : 48-, 2012

5 S. O. Jeong, Chosun University 2016

6 R. Nandan, 53 : 980-, 2008

7 B. T. Gibson, 16 : 56-, 2014

8 Q. Yang, 527 : 4389-, 2010

9 R. Kuziak, 8 : 103-, 2008

10 E. Fereiduni, 224 : 1-, 2015

11 R. Sakano, 27-28, 2001

12 T. Tanaka, 61 : 756-, 2009

13 W. B. Lee, 55 : 355-, 2006

14 X. Liu, 59 : 50-, 2014

15 H. S. Bang, 48 : 152-, 2016

16 한태교, "자동차용 첨단 고강도강의 개발 동향 및 용접성" 대한용접접합학회 27 (27): 13-18, 2009

17 정수옥, "이종재 Al5083-O/DP590 마찰교반용접시 툴의 삽입깊이(Plunge Depth)가 용접성에 미치는 영향" 대한용접접합학회 34 (34): 17-22, 2016

18 연윤모, "마찰교반 점용접기술 및 Al 접합부 특성" 대한용접접합학회 23 (23): 16-20, 2005

19 김영식, "마찰교반 점용접(FSSW)을 이용한 비철금속 접합기술의 연구 동향과 전망" 대한용접접합학회 30 (30): 202-212, 2012