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本文分析了焊后再热裂纹扩展量与断裂韧性的关系,建立了A710钢J积分断裂韧性随裂纹扩展量△a变化的关联数模,从而为进一步研究材料断裂机理,为含损压力容器临界裂纹尺寸提供了较为可靠的设计判据。
In this paper, the relationship between the amount of reheat crack growth and the fracture toughness after welding was analyzed, and the related numerical model of the J integral fracture toughness of the A710 steel with the crack growth amount △ a was established. In order to further study the fracture mechanism of the material, Crack size provides more reliable design criteria.