O原子对高温合金基体Ni、Co和NiCr晶界作用的理论计算分析

李昕, 江河, 姚志浩, 董建新

Theoretical Calculation and Analysis of the Effect of Oxygen Atom on the Grain Boundary of Superalloy Matrices Ni, Co and NiCr

LI Xin, JIANG He, YAO Zhihao, DONG Jianxin

表1 3种晶界理想拉伸实验结果

Table 1 Ideal strength test results of three kinds of grain boundaries

System Tensile strength / GPa Fracture strain Pure O1 O2 O3 Pure O1 O2 O3 Ni 31.59 24.73 22.75 17.43 0.30 0.22 0.28 0.09 Co 34.89 28.69 24.71 25.57 0.21 0.14 0.13 0.10 NiCr 26.25 19.66 20.36 21.03 0.16 0.16 0.17 0.18