フェライト・パーライト鋼の劈開破壊起点となる微視亀裂の観察とその形成確率の定量化

• Published in: 鉄と鋼 Vol. 102; no. 6; pp. 330 - 339
• Main Authors: 柴沼, 一樹, 根本, 義規, 平出, 隆志, 鈴木, 克幸, 粟飯原, 周二
• Format: Journal Article
• Language: Japanese
• Published: 一般社団法人 日本鉄鋼協会 2016
• Subjects: cleavage fracture; crack initiation; ferrite-pearlite steel; fracture toughness; micro-crack

This study presents investigations of micro-crack initiation in pearlite microstructure as a trigger of unstable cleavage crack propagation in ferrite-pearlite steel. In order to clarify the micro-crack initiation mechanism, a trace analysis was conducted to compare the direction of crack surface wi...