MECHANICAL PROPERTIES OF FRICTION WELDED 6063 ALUMINIUM ALLOY AND MARTENSITIC STAINLESS STEEL
Keywords:
6063 Aluminum Alloy, Axial Shortening, 410 Martensitic Stainless Steel, Friction WeldingAbstract
The mechanical and metallurgical properties of 6063 aluminium alloy / 410 martensitic stainless steel friction welds were studied. Friction welds produced from low friction pressures and high forging pressures exhibited high tensile strength and failed within the aluminium alloy substrate. Welded samples failed at the 6063-aluminium alloy and stainless steel interface, showing poor ductility. An increase in the forge pressure increased tensile strength of dissimilar welds. Tensile strength and impact strength are maximum at the condition of low friction pressure, high forge pressure and low burn-off length. The losses of axial shortening are a good correlation with friction pressure and forge pressure. The axial shortening is maximum at the condition of low friction pressure and high upset pressure. Maximum axial shortening gave maximum tensile strength. Detailed microstructure and micro hardness analysis were performed to study the interface of the dissimilar welding.
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