A novel heat treatment for improving the hydrogen embrittlement resistance of a precipitation-hardened martensitic stainless steel
A novel heat treatment for improving the hydrogen embrittlement resistance of a precipitation-hardened martensitic stainless steel
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DOI：
10.1016/j.corsci.2022.110530
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发表时间：
2022-07
影响因子：
8.3
通讯作者：
Lin Yan Tan;Dongdong Li;Luchun Yan;Xiaolu Pang;K. Gao
中科院分区：
文献类型：
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作者：
Lin Yan Tan;Dongdong Li;Luchun Yan;Xiaolu Pang;K. Gao
新型热处理工艺的应用，在保持力学性能的同时，显著提高了PH13-8Mo钢的抗氢脆性能。该方法的机理是奥氏体捕获氢，通过细晶强化改善力学性能。研究结果表明，与传统的峰时效热处理相比，新型热处理使钢的抗拉强度从1500℃/h降至1400℃/h，但HE敏感性指数(IHE)从52%降至14%。
Application of the novel heat treatment significantly improves the PH13–8Mo steel hydrogen embrittlement (HE) resistance over that obtained by conventional heat treatment, while maintaining the mechanical properties. The mechanism of the proposed method is as follows: austenite captures hydrogen and the mechanical properties are improved by fine grain strengthening. The results of this study show that compared with the steel properties obtained by conventional peak-aged heat treatment, the novel heat treatment results in a reduction in the tensile strength from 1500 MPa to 1400 MPa, but a significant decrease in the HE susceptibility index (IHE) from 52% to 14%.