抵抗ろう接したチタン合金継手の引張強さの分布に及ぼすろう材の影響

概要

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Ti-l0mass%Zr alloy was resistance brazed using two brazing filler metals， silver and copper. To investigate the effect of brazing filler metal on the distribution of the tensile strength of joints， their tensile strength and fracture surface were examined. The set of the tensile strength of joints resistance-brazed with silver has the sample mean of 422MPa and the sample standard deviation of 31MPa, while that of joints resistance-brazed with copper has the sample mean of 431MPa and the sample standard deviation of 62MPa. The tensile strength of joints resistance-brazed with silver and copper， δB[MPa],are expressed with the area fraction of ductile fracture surface， Αd， as: σB=211Αd+300 for silver and σB= 584Ad+ 178 for copper. The sample standard deviations of the two sets are discussed on the basis of the slopes and intercepts of the equations connecting σB and Ad.
福井大学工学部の論文