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采用Jmat Pro材料性能模拟软件与试验研究结合的方法,研究分析了3种不同铝质量分数新型ZG1Cr10Ni Al Mo VNb N耐热钢正火+高温回火后的显微组织,模拟了3种试验钢在常温下拉伸试验的应力-应变曲线,并结合拉伸试验数据和断口形貌分析了其断裂机制。结果表明,模拟结果与试验结果较为吻合,随着钢中铝质量分数的增加,断裂机制发生由微孔聚集型断裂向准解理断裂、解理断裂的转变。结合显微组织分析得出铝质量分数是影响碳化物类型、形状以及分布的主要影响因素。
Using Jmat Pro material property simulation software combined with experimental research, the microstructure of three kinds of new ZG1Cr10Ni Al Mo VNb N heat-resisting steel with different aluminum content after normalizing and high temperature tempering was studied. Three kinds of test steel The stress-strain curve of the tensile test at room temperature was analyzed. The fracture mechanism was analyzed based on the tensile test data and the fracture morphology. The results show that the simulation results are in good agreement with the experimental results. With the increase of aluminum content in the steel, the transition from micropore aggregated fracture to quasi-cleavage fracture and cleavage fracture occurs. Combined with the microstructure analysis, it is concluded that the mass fraction of aluminum is the main factor that affects the type, shape and distribution of carbides.