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vacuum diffusion bonding of dissimilar metal alloys aa2219 and ti-6al-4v: influence of bonding pressure on microstructure and mechanical properties of the bonding joint
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نویسنده
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vatnalmath manjunath ,auradi virupaxi ,murthy bharath vedashantha ,nagaral madeva ,g b veeresh kumar ,shetty suresh ,shetty suresh
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منبع
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iranian journal of materials science and engineering - 2025 - دوره : 22 - شماره : 2 - صفحه:78 -91
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چکیده
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Dissimilar joints of aa2219 and ti-6al-4v alloys are obtained using the vacuum diffusion bonding method. the bonding pressure is controlled in the range of 1-4 mpa by keeping the bonding temperature and holding time constant. the influence of the bonding pressure on the microstructure and mechanical properties of the bonding joints is investigated. the diffusion behaviour across the interface of the bonding joints is increased with the increase in bonding pressure. the interface morphology of the specimen bonded at lower bonding pressures exhibits scraggly voids and cracks. the irregular voids and cracks are squeezed and gradually closed due to the significant increase in the diffusion between al and ti. the maximum shear strength of 81 mpa is obtained for the joint made at the bonding pressure of 4 mpa, and a diffusion layer of 0.76 µm is formed at the ti side interface. the fracture morphology inferred the brittle failure of the bonding joints due to the formation of intermetallic compounds like tial, tial2, and tial3 at the interface of al and ti.
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کلیدواژه
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aa2219 ,vacuum-diffusion ,interface and fracture morphology ,microstructure ,mechanical property.
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آدرس
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siddaganga institute of technology, department of mechanical engineering, india, siddaganga institute of technology, department of mechanical engineering, india, visvesvaraya technological university, rns institute of technology, department of mechanical engineering, india, aircraft research and design centre, india, national institute of technology, department of mechanical engineering, india, nitte (deemed to be university), nmam institute of technology (nmamit), department of mechanical engineering, india, nmam institute of technology, department of mechanical engineering, india
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Authors
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