氢扩散模型对临氢结构裂尖氢浓度计算影响

诸滔, 孙浩翔, 周亚洪, 赵宇航, 王艳飞

Effect of Hydrogen Diffusion Model on Hydrogen Concentration Calculation Around a Crack Tip in Hydrogen-exposed Structures

ZHU Tao, SUN Haoxiang, ZHOU Yahong, ZHAO Yuhang, WANG Yanfei

表2 主要的材料常数

Table 2 Main material properties

Symbol Value Symbol Value E 207 GPa[18] NL 8.46 × 1019 sites·mm-3 [18] v 0.3[18] VH 2.0 × 103 mm3·mol-1 [18] n 0.2[18] DL 1.27 × 10-2 mm2·s-1 [18] β 1[18] ∆v/VA 0.2826[4] α 6[18] a 2.8665 × 10-7 mm[13]