金属材料的强度与应力-应变关系的球压入测试方法1)

张志杰, 蔡力勋, 陈辉, 包陈, 刘晓坤

SPHERICAL INDENTATION METHOD TO DETERMINE STRESS-STRAIN RELATIONS AND TENSILE STRENGTH OF METALLIC MATERIALS1)

Zhang Zhijie,Cai Lixun,Chen Hui,Bao Chen,Liu Xiaokun

表1 压头系数^0模型的参数

Table 1 Parameters of indenter coefficient p model

D/mm E/GPa e1 e3 1 60 ?80 4.282 -1.507 1.042 0 180 ?220 9.751 -3.102 0.8870 1.587 5 60 ?80 -83.13 180 ?220 -82.02 9.921 5.821 0.811 2 0.806 1