The Influence of Oxgen on the Weldability of Diffusion Bonds between Aluminum Bronze and Austenitic Stainless Steel

概要

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The purpose of this study is to investigate the influence of oxygen on the weldability of the joints between aluminum bronze and austenitic stainless steel. Bondings were performed using Cu foils with different oxygen contents. Aluminum bronzes with various aluminum contents were also used. The tensile strength of the joints decreased rapidly as the oxygen content in Cu foils increased. The joint efficiency decreased as the aluminum content in aluminum bronze increased. When the oxygen content was as low as less than 28ppm, the aluminum content in aluminum bronze did not affect its strength. The segregation of aluminum and oxygen on the surface of the aluminum bronze was recognized by AUGER analysis. From the results of this analysis, aluminum oxides are considered to be formed on the surface of the aluminum bronze. The weldability of the joints lowered when the higher oxygen content Cu foils were used, but the tensile strength of the joints increased when the surface of the aluminum bronze to be bonded before bonding was sputtered by Ar ions first and then coated by Cu.
社団法人溶接学会の論文
1989-04-01