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EFFECT OF ROTATIONAL SPEED (U`) ON THE PARTICLES BREAK UP AND HARDNESS VALUES IN 2024-T851 FRICTION STIR WELDS
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نویسنده
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Safarkhanian M. A. ,Goodarzi M. ,Boutorabi S. M. A.
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منبع
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iranian journal of materials science and engineering - 2009 - دوره : 6 - شماره : 3 - صفحه:7 -15
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چکیده
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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
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کلیدواژه
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Friction stir welding ,Aluminum alloys ,Microstructure ,Particles ,Hardness
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آدرس
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iran university of science and technology, School of Metallurgy and Materials Engineering, ایران, iran university of science and technology, Department of Metallurgy and Materials Engineering, ایران, iran university of science and technology, School of Metallurgy and Materials Engineering, ایران
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پست الکترونیکی
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boutorabi@iust.ac.ir
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Authors
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