ステンレス鋼に被覆した TiC 層の引張破壊の微視的観察とその力学的考察

概要

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We have measured the tensile fracture properties of the TiC coated SUS316L stainless steel, applying the stress perpendicular to the plane of interfaces between the coating and the substrate. The fracture of the as grown or non-annealed specimens occured within the TiC layer, and took the form of partial fracture surfaces of small circular areas below about 2mm in diameters. The tensile surfaces of the TiC coated specimens after vacuum annealing at about 1373K(1100℃) showed arciform curved fracture surfaces which are understood by a statics consideration taking into account of the maximum stress plane theory and the residual thermal stress. The strengths of non-annealed and annealed specimens are 34.4MPa {350kgf/cm^2} and 30.2MPa {308kgf/cm^2} respectively, expressed as Weibull's 50% fracture stress.
一般社団法人日本機械学会の論文
1985-05-25