Effect of TiC-Cr_3C_2 Particles Content on Abrasive Resistance of Co-Base Overlay Weld Alloy

概要

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This study was concerned with the production of carbide dispersion type composite materials by plasma transfer arc welding. The composite materials were produced by introducing different amounts of Cr_3C_2 and/or TiC powders in to Co-base alloy (Stellite 6). To assess the wear resistance of the composite materials, rubber wheel abrasion test was performed on surface of the composite materials. The composite materials consisted of Co-alloy matrix and non-fused carbide. The average of matrix hardness was increased to HV850 from HV450 depending on Cr_3C_2 content of the composite materials. Weight loss of the composite materials by wear test decreased to 50 mg from 850 mg dapending on volume fraction of non-fused carbide particles. Especially mean free path between carbide particles was smaller than size of silica sand (wear material), and the abrasive wear resistance of the composite materials was rapidly improved.
社団法人溶接学会の論文
1993-10-01