16MnR钢应力三维度与断裂机制的实验研究

The experiment study on the stress triaxiality with the fracture mechanism for 16MnR steel

通过对１６ＭｎＲ钢拉伸实验的测试数据、计算结果和应力三维度与断裂机制关系的分析，研究了应力三维度与Ⅰ－Ⅱ复合型断裂机制的关系，并得出了此钢Ⅰ－Ⅱ复合型断裂机制转换的应力三维度临界值。

The paper analyzed the testing data and the calculating results which is obtained by tensile experiment for 16MnR steel, meanwhile analyzed the relation of stress triaxiality vs. fracture mechanism. The relation of stress triaxiality vs. Ⅰ-Ⅱ mixed mode fracture mechanism is obtained and the critical valve for the changing of fracture mechanism is studied in this paper.