Authors: ChiSung Jeon YongHa Jeong SungTae Hong Md Tariqul Hasan Huynh Ngoc Tien SeungHyun Hur YongJai Kwon
Publish Date: 2014/02/14
Volume: 28, Issue: 2, Pages: 499-504
Abstract
Graphite/aluminum metal matrix composite MMC joints are successfully fabricated by friction stir spot welding FSSW During lapjoining processes of aluminum alloy sheets by FSSW graphite/water colloid is applied between the tool shoulder and the upper plate The Raman spectrum of the FSSW joint confirms that graphite/aluminum MMC is successfully induced in the stir zone Quasistatic shear tests and micro hardness measurements of the FSSW joint also show that the strength and toughness of the joint are significantly improved by inducing graphite/aluminum MMC in the stir zone The results of the present study suggest that the mechanical properties of structural components joined by spot welds can be easily enhanced by adopting MMC joints by FSSW instead of changing the material or increasing the number of jointsChiSung Jeon obtained BS degree in mechanical engineering in2010 from University of Ulsan He also obtained MS degree in mechanical engineering in 2012 from the same university He is currently working as a researcher at Research and Technology Center Hyundai Steel South KoreaSungTae Hong obtained BS degree and MS degree in mechanical engineering in 1993 and 1995 respectively from Yonsei University He obtained PhD degree in mechanical engineering in 2005 from University of Michigan Ann Arbor He is currently an associate professor at School of Mechanical Engineering of University of Ulsan Ulsan South Korea
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