Volume 6, Issue 3 (Summer 2009 2009)                   IJMSE 2009, 6(3): 7-14 | Back to browse issues page

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M. Goodarzi, S. M. A. Boutorabi, M. A. Safarkhanian. EFFECTOFROTATIONALSPEED (Ù) ON THE PARTICLES BREAK UPAND HARDNESS VALUES IN 2024-T851 FRICTION STIR WELDS. IJMSE 2009; 6 (3) :7-14
URL: http://ijmse.iust.ac.ir/article-1-196-en.html
EFFECTOFROTATIONALSPEED (Ù) ON THE PARTICLES BREAK UPAND HARDNESS VALUES IN 2024-T851 FRICTION STIR WELDS
M. Goodarzi , S. M. A. Boutorabi , M. A. Safarkhanian
Abstract:   (40833 Views)
Abstract:In this study, an effort has been made to determine the influence of rotational speed of tool on themicrostructure and hardness values of friction stir welded 2024-T851 aluminum alloy. The microstructure of stir zonein the joints has been investigated. It was found that the particles such as Al6(CuFeMn) particles are broken up duringfriction stir welding, and the degree of break up of these particles in the stir zone increases with increasing rotationalspeed. Since the break up of these particles and the recrystallization of new grains happen simultaneously, the brokenparticles would be placed in the grain boundaries. Moreover, the hardness value in the stir zone increases withincreasing rotational speed
Keywords: Friction stir welding, Aluminum alloys, Microstructure, Particles, Hardness
     
Type of Study: Research Paper | Subject: Ceramics
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