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前言本文从探讨粒状贝氏体和粒状组织的组织因素与机械性能之间的关系出发,着重讨论了具有不同形态小岛(M-A)的粒贝和粒状组织在静拉伸、冲击和疲劳过程中断裂行为和断裂机理,并以此为根据,对粒贝和粒状组织的强度、塑性和韧性等指标进行分析与解释,试图为获得最佳强韧化组织提供依据。试料及试验试验采用电炉钢,坯料经热轧成160方,再经640℃40h保温回火。
Preface This article from the discussion of the relationship between the organizational factors and mechanical properties of granular bainite and granular tissue, focusing on the different shape of the island (MA) of the shell and granular tissue in the static tensile, impact and fatigue process Fracture behavior and fracture mechanism. Based on this, the strength, plasticity, toughness and other indicators of the shell and granular structure were analyzed and explained, trying to provide the basis for obtaining the best strengthening and toughening structure. Test samples and test using electric furnace steel, the slab by hot-rolled into 160 square, and then by 640 ℃ 40h insulation tempering.