DH36海洋工程钢焊接结构的氢脆敏感性研究

李新城, 李兆南, 王海锋, 徐云泽, 王明昱, 甄兴伟

Hydrogen Embrittlement Sensitivity for Welded Structural Parts of DH36 Marine Engineering Steel

LI Xincheng, LI Zhaonan, WANG Haifeng, XU Yunze, WANG Mingyu, ZHEN Xingwei

表1 焊缝区、热影响区与母材区的氢扩散参数

Table 1 Hydrogen diffusion parameters of the welding metal, heat-affected zone, and base metal

Zone I∞ / mA·cm-2 D / cm2·s-1 J / mol[H]·cm-2·s-1 C0 / mol·cm-3 NT Base metal 7.5 8.33 × 10-6 7.77 × 10-11 9.33 × 10-7 2.69 × 1019 Heat-affected zone 10.2 1.28 × 10-5 1.06 × 10-10 8.25 × 10-7 1.49 × 1019 Welding metal 9.1 1.19 × 10-5 9.43 × 10-11 7.92 × 10-7 1.55 × 1019