Investigation of mechanical and metallurgical behaviour in FSW of AA5052-H32 and AA5083-H111 aluminium alloys
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초록
The novel approach of the present work is the investigation of mechanical and metallurgical performance characteristics oftwo aluminium alloy 5052-H32 and 5053-H11 joint welded by friction stir welding. The experimental dissimilar metal frictionstir welding investigated the influencing input welding process parameters and resultant effects on the performancecharacteristics of the welded specimen. The square pin tool with 15 mm tool shoulder diameter and a constant tool feed of 28mm/min was used with varying tool rotation speed of 800, 1000 and 1200 rpm in conjunction with 10kN axial thrust wereutilized in experimentally producing dissimilar weld joints. The welded specimen were subsequently characterized formicrostructural, tensile strength and microhardness properties by optical microscopy, scanning electron microscopy, X-raydiffraction analysis, tensile test and Vickers microhardness survey. Improved grain structure and reduced defects anddislocations were observed with specimen welded by 1000rpm tool rotational speed with 87.67% joint efficiency with 13.29%elongation. The influencing parameters was identified to be tool rotational speed contributing significantly in improvingmicrohardness of the specimen by 12.86% over the base aluminium 5083-H32 alloy.
Abstract
The novel approach of the present work is the investigation of mechanical and metallurgical performance characteristics oftwo aluminium alloy 5052-H32 and 5053-H11 joint welded by friction stir welding. The experimental dissimilar metal frictionstir welding investigated the influencing input welding process parameters and resultant effects on the performancecharacteristics of the welded specimen. The square pin tool with 15 mm tool shoulder diameter and a constant tool feed of 28mm/min was used with varying tool rotation speed of 800, 1000 and 1200 rpm in conjunction with 10kN axial thrust wereutilized in experimentally producing dissimilar weld joints. The welded specimen were subsequently characterized formicrostructural, tensile strength and microhardness properties by optical microscopy, scanning electron microscopy, X-raydiffraction analysis, tensile test and Vickers microhardness survey. Improved grain structure and reduced defects anddislocations were observed with specimen welded by 1000rpm tool rotational speed with 87.67% joint efficiency with 13.29%elongation. The influencing parameters was identified to be tool rotational speed contributing significantly in improvingmicrohardness of the specimen by 12.86% over the base aluminium 5083-H32 alloy.
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