EFFECT OF FRICTION WELDING ON CHARACTERISTICS OF PURE TITANIUM/A5083 ALUMINUM ALLOY JOINT : Report 1:Joint Mechanical Properties

概要

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The influence of friction welding conditions on the mechanical-joint tensile and bend ductility-properties of as-welded dissimilar friction joints between pure titanium (Ti) and aluminum-magnesium alloy(A_5o8_3) base materials was investigated.The tensile strength increased when high friction pressure (≩_2ooMPa) and high upsetting pressure (≩_3ooMPa) were used during friction welding.Joint tensile strength also increased when friction time decreased, and the highest strength was obtained using the friction time of o._5s.The higher joint strength was observed for the contacting surfaces polished using a buff than that prepared using No.2_4o emery paper.The use of high friction and upsetting pressure values and short friction times resulted in dissimilar joints which fractured in A_5o8_3 substrate during joint tensile testing.The joint bend ductility also increased when high friction pressures (≩_2ooMPa) and a short friction time (o._5s) were employed during joining.It was concluded that the selection of joining parameters that promotes the formation of thin transition and intermetallic layers produces dissimilar joints with satisfactory mechanical properties.
社団法人日本材料学会の論文
1995-09-15