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首页> 外文期刊>ISIJ international >Hydrogen Embrittlement Properties of Stainless and Low Alloy Steels in High Pressure Gaseous Hydrogen Environment
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Hydrogen Embrittlement Properties of Stainless and Low Alloy Steels in High Pressure Gaseous Hydrogen Environment

机译：高压气态氢环境下不锈钢和低合金钢的氢脆性能

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摘要

Recent research on Hydrogen Environment Embrittlement (HEE) susceptibility of stainless and low alloy steels in highly pressurized gaseous hydrogen environments was reviewed from the viewpoint of tensile properties, hydrogen absorption and fatigue properties. HEE susceptibility evaluated by Slow Strain Rate Test (SSRT) in high pressure hydrogen environments strongly depended on steel chemical compositions. Austenitic stainless steels such as type 316L or iron based superalloy as A286 showed sufficient resistance to HEE, while stainless steels with low levels of alloying elements such as type 304L showed a remarkable ductility loss in high pressure gaseous hydro gen due to martensitic transformation. Martensitic stainless or low alloy steels also showed a remarkable ductility loss in gaseous hydrogen. Relationship between HEE susceptibility and an amount of hydrogen absorption was investigated. HEE susceptibility and hydrogen embrittlement under cathodic charging in aqueous solution showed the same dependence on the amount of hydrogen absorption, which implies HEE occurs by hydrogen absorption from external gaseous hydrogen environments. Fatigue properties in high pressure gaseous hydrogen environments were evaluated by means of inter nal or external pressurization tests. Austenitic stainless steels such as type 316L showed little decrease in fatigue life by hydrogen, while metastable stainless steel as type 304 or precipitation hardened superalloy as A286 showed degradation in fatigue life by hydrogen gas. Low alloy steel also showed a decrease in fatigue life in hydrogen, while high strength low alloy steel with much Mo and V showed longer fatigue life than conventional steel.
机译：从拉伸性能，吸氢性能和疲劳性能的角度，综述了不锈钢和低合金钢在高压气态氢环境中对氢环境脆化（HEE）敏感性的最新研究。通过慢应变速率测试（SSRT）在高压氢气环境中评估的HEE敏感性在很大程度上取决于钢的化学成分。奥氏体不锈钢（例如316L型）或铁基高温合金（如A286）表现出足够的抗HEE性能，而合金元素含量低的不锈钢（例如304L型）由于马氏体相变而在高压气态氢中表现出显着的延展性损失。马氏体不锈钢或低合金钢在气态氢中也显示出显着的延展性损失。研究了HEE磁化率与氢吸收量之间的关系。水溶液中阴极带电时的HEE磁化率和氢脆显示了对氢吸收量的相同依赖性，这意味着HEE发生于外部气态氢环境中的氢吸收。通过内部或外部加压试验评估了高压气态氢环境下的疲劳性能。奥氏体不锈钢（如316L型）由于氢而导致的疲劳寿命几乎没有降低，而亚稳态不锈钢（如304型）或沉淀硬化超合金（如A286）则由于氢气而导致了疲劳寿命的降低。低合金钢在氢中的疲劳寿命也降低，而钼和钒含量较高的高强度低合金钢的疲劳寿命比常规钢更长。

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