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本文应用线弹性断裂力学基本原理和实验技术,研究超高强度42SiMnMoVNb钢的平面应变断裂韧性K_(1c)与热处理的关系,寻求该钢的强韧化途径,并对微观组织、断口形态与K_(1c)的关系进行了某些探讨。
In this paper, the basic theory of linear elastic fracture mechanics and experimental techniques were used to study the relationship between the plane strain fracture toughness K_ (1c) and heat treatment of ultra-high strength 42SiMnMoVNb steel. The toughening path of the steel was explored. The microstructure, fracture morphology and K_ (1c) the relationship between some of the discussions.