{"title":"超高强度高熵合金抗氢致强度损失的机理研究","authors":"Zhenhuan Gao, Yunfei Xue, Jinxu Li, Lining Xu, Lijie Qiao","doi":"10.2139/ssrn.3910593","DOIUrl":null,"url":null,"abstract":"The resistance of Al0.5Cr0.9FeNi2.5V0.2 high entropy alloy (HEA) to hydrogen embrittlement was investigated by slow strain rate test (SSRT) and fracture surface was examined through scanning electron microscope. Compared with other ultra-high strength steels, Al0.5Cr0.9FeNi2.5V0.2 showed insignificant strength loss after hydrogen charging. The fracture surface of hydrogen charged specimens mainly consisted of dimples and no intergranular morphology was observed. The coupling effect of the dispersed nano-structured precipitates and high-density dislocations in Al0.5Cr0.9FeNi2.5V0.2 improves the resistance to hydrogen-induced strength loss.","PeriodicalId":9858,"journal":{"name":"Chemical Engineering (Engineering) eJournal","volume":"18 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Mechanism of the High Resistance to Hydrogen-Induced Strength Loss in Ultra-High Strength High Entropy Alloy\",\"authors\":\"Zhenhuan Gao, Yunfei Xue, Jinxu Li, Lining Xu, Lijie Qiao\",\"doi\":\"10.2139/ssrn.3910593\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The resistance of Al0.5Cr0.9FeNi2.5V0.2 high entropy alloy (HEA) to hydrogen embrittlement was investigated by slow strain rate test (SSRT) and fracture surface was examined through scanning electron microscope. Compared with other ultra-high strength steels, Al0.5Cr0.9FeNi2.5V0.2 showed insignificant strength loss after hydrogen charging. The fracture surface of hydrogen charged specimens mainly consisted of dimples and no intergranular morphology was observed. The coupling effect of the dispersed nano-structured precipitates and high-density dislocations in Al0.5Cr0.9FeNi2.5V0.2 improves the resistance to hydrogen-induced strength loss.\",\"PeriodicalId\":9858,\"journal\":{\"name\":\"Chemical Engineering (Engineering) eJournal\",\"volume\":\"18 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Engineering (Engineering) eJournal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2139/ssrn.3910593\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering (Engineering) eJournal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2139/ssrn.3910593","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The Mechanism of the High Resistance to Hydrogen-Induced Strength Loss in Ultra-High Strength High Entropy Alloy
The resistance of Al0.5Cr0.9FeNi2.5V0.2 high entropy alloy (HEA) to hydrogen embrittlement was investigated by slow strain rate test (SSRT) and fracture surface was examined through scanning electron microscope. Compared with other ultra-high strength steels, Al0.5Cr0.9FeNi2.5V0.2 showed insignificant strength loss after hydrogen charging. The fracture surface of hydrogen charged specimens mainly consisted of dimples and no intergranular morphology was observed. The coupling effect of the dispersed nano-structured precipitates and high-density dislocations in Al0.5Cr0.9FeNi2.5V0.2 improves the resistance to hydrogen-induced strength loss.
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