Effect of welding speed on microstructural and mechanical properties of laser lap weld joints in dissimilar Al and Cu sheets

Science and Technology of Welding and Joining - Tập 19 Số 2 - Trang 111-118 - 2014
Su-Jin Lee1, Harumasa Nakamura1, Yousuke Kawahito1, Seiji Katayama1
1Joining and Welding Research Institute (JWRI), Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

Tóm tắt

Conventional fusion welding of aluminium and copper dissimilar materials is difficult because of poor weldability arising from the formation of brittle intermetallic compounds on the weld zone as well as different chemical, mechanical and thermal properties of welded joints. Joining of Al and Cu plates or sheets offers a metallurgical challenge due to unavoidable formation of brittle intermetallic compounds. Therefore, it is necessary to effectively suppress the formation and growth of Al–Cu intermetallic compounds. For welding of dissimilar Al and Cu sheets, no systematic work has been conducted to reduce these defects. Thus, this paper focuses on the effect of welding speed on the quality of a lap weld joint in the Al and Cu sheets with a single mode fibre laser. It was found that consequently sound strong weld joints could be produced by suppressing the formation of intermetallic compounds in the interface zone at extremely high speeds.

Từ khóa


Tài liệu tham khảo

10.1016/0924-0136(95)02150-7

10.1016/j.jmatprotec.2006.11.123

Ready J.F. ‘LIA handbook of laser materials processing’; 2001, Orlando, FL, Laser Institute of America Magnolia Publishing Inc.

10.2184/lsj.38.594

Arata Y., 1975, Trans. JWRI, 4, 71

10.2207/qjjws.13.390

Murray J.L. ‘Al–Cu (aluminum–copper), binary alloy phase diagrams’, 2nd edn, (ed. Massalski T. B.), Vol. 1, 141–143; 1990, Materials Park, OH, ASM International.

10.1016/j.phpro.2011.03.018

10.1016/j.jallcom.2009.10.127

10.1179/1362171813Y.0000000114

10.1179/1362171813Y.0000000130

10.2207/jjws.78.124

10.2207/jjws.78.682

Shamoto H., and Mikame K. ‘The feature of high power single mode fiber laser processing’, Proc. 72nd Laser Materials Processing Conf, December; Nagoya, Japan; Japan Laser Processing Society, 2009, 31–34.

Naeem M., Jessett R., and Withers K. ‘Fiber laser welding of dissimilar materials’, http://www.industrial-lasers.com/articles/2012/03/fiber-laser-welding-of-dissimilar-materials.html, 2012.

10.1016/j.jmatprotec.2005.09.013

10.1016/j.microrel.2013.02.020

10.1016/j.jallcom.2004.07.057

Thông tin
Thông tin xuất bản

Science and Technology of Welding and Joining

Tập 19 Số 2

111-118

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