液相インサート金属拡散接合継手の機械的性質の劣化要因の検討 : Ni基超耐熱合金の液相インサート金属拡散接合に関する研究(第5報)

概要

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This study investigated the effects of bonding conditions on the mechanical properties at 1255K of Transient Liquid Insert Metal Diffusion Bonding (TLIM-bonding) joints of Ni-base superalloys, MM007 with the commercial amorphous insert metals such as MBF-30,MBF-80 and MBF-90. The bonding conditions, viz., the bonding temperature, the bonding atmosphere and the homogenizing atmosphere were varied. The bonding temperature didn't affect the tensile property of the TLIM-bonding joint, but the bonding atmosphere and the homogenizing atmosphere affected it, viz., the tensile strength of the bonding joint was approximately equal to that of base metal at the bonding atmosphere of 13.3 mPa and at the homogenizing atmosphere of 6.7 mPa. Moreover, the tensile strength scattered without using the bonding spacer. It can be concluded by the detailed observation of the fractured surfaces of the bonding joints that the tensile strength lowered by forming the flat and brittle fractured surface due to the oxide film on the surface of base metal.
社団法人溶接学会の論文
1991-02-05