圧延ステンレスクラッド鋼の接合強度特性とその評価法
1990 年 76 巻 8 号 p. 1293-1300
詳細
1990 年 76 巻 8 号 p. 1293-1300
The characteristics of bonding strength of hot rolled stainless clad steel were investigated in conjunction with the microstructures and fracture toughness of bonding interface and the effect of test specimen size on bonding strength. The following results were obtained.
(1) The bonding ratio is the most important parameter for evaluation of characteristics of bonding interface. The bonding strength and fracture toughness decrease and crack propagation rate increases with decrease of bonding ratio, which results in higher possibility to debond at the interface with T joint welds.
(2) The shear and ram tensile strengths insufficiently reflect the characteristics of bonding interface and are much affected by the size of test specimen.
(3) The fracture toughness and crack propagation rate of bonding interface change with the strength of cladding stainless steel and residual stress remained in the interface.
