Zhenyu Chen, Zhongliang Zhu, Hasan I. Khan, Zhengzong Chen, Naiqiang Zhang
{"title":"新型镍基合金在不同环境中的应力腐蚀开裂敏感性","authors":"Zhenyu Chen, Zhongliang Zhu, Hasan I. Khan, Zhengzong Chen, Naiqiang Zhang","doi":"10.1002/maco.202314212","DOIUrl":null,"url":null,"abstract":"<p>Stress corrosion cracking (SCC) susceptibility of a new nickel-based alloy C-HRA-2 under two types of superheated steam (SHS) (0.1 and 8 MPa) and supercritical water (SCW) (25 MPa) at 650°C was studied through slow strain rate tensile tests at a strain rate of 5 × 10<sup>−7 </sup>s<sup>−1</sup>. The results indicate that C-HRA-2 exhibits SCC susceptibility in both SHS and SCW, and the susceptibility increases with increasing pressure. Transgranular fracture (located inside) characterized by dimples/micropores and intergranular fracture (located at the edge) characterized by rock-sugar-like morphology was observed in all specimens. The brittleness of the alloy increases with the increase of medium pressure. A large number of cracks perpendicular to the loading axis were noticed on the gauge surface. The SCC mechanism of C-HRA-2 under steam and SCW is dynamic embrittlement.</p>","PeriodicalId":18225,"journal":{"name":"Materials and Corrosion-werkstoffe Und Korrosion","volume":"75 8","pages":"965-977"},"PeriodicalIF":1.6000,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Stress corrosion cracking susceptibility of a new nickel-based alloy in different environments\",\"authors\":\"Zhenyu Chen, Zhongliang Zhu, Hasan I. Khan, Zhengzong Chen, Naiqiang Zhang\",\"doi\":\"10.1002/maco.202314212\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Stress corrosion cracking (SCC) susceptibility of a new nickel-based alloy C-HRA-2 under two types of superheated steam (SHS) (0.1 and 8 MPa) and supercritical water (SCW) (25 MPa) at 650°C was studied through slow strain rate tensile tests at a strain rate of 5 × 10<sup>−7 </sup>s<sup>−1</sup>. The results indicate that C-HRA-2 exhibits SCC susceptibility in both SHS and SCW, and the susceptibility increases with increasing pressure. Transgranular fracture (located inside) characterized by dimples/micropores and intergranular fracture (located at the edge) characterized by rock-sugar-like morphology was observed in all specimens. The brittleness of the alloy increases with the increase of medium pressure. A large number of cracks perpendicular to the loading axis were noticed on the gauge surface. The SCC mechanism of C-HRA-2 under steam and SCW is dynamic embrittlement.</p>\",\"PeriodicalId\":18225,\"journal\":{\"name\":\"Materials and Corrosion-werkstoffe Und Korrosion\",\"volume\":\"75 8\",\"pages\":\"965-977\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-03-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials and Corrosion-werkstoffe Und Korrosion\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/maco.202314212\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials and Corrosion-werkstoffe Und Korrosion","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/maco.202314212","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Stress corrosion cracking susceptibility of a new nickel-based alloy in different environments
Stress corrosion cracking (SCC) susceptibility of a new nickel-based alloy C-HRA-2 under two types of superheated steam (SHS) (0.1 and 8 MPa) and supercritical water (SCW) (25 MPa) at 650°C was studied through slow strain rate tensile tests at a strain rate of 5 × 10−7 s−1. The results indicate that C-HRA-2 exhibits SCC susceptibility in both SHS and SCW, and the susceptibility increases with increasing pressure. Transgranular fracture (located inside) characterized by dimples/micropores and intergranular fracture (located at the edge) characterized by rock-sugar-like morphology was observed in all specimens. The brittleness of the alloy increases with the increase of medium pressure. A large number of cracks perpendicular to the loading axis were noticed on the gauge surface. The SCC mechanism of C-HRA-2 under steam and SCW is dynamic embrittlement.
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Materials and Corrosion is the leading European journal in its field, providing rapid and comprehensive coverage of the subject and specifically highlighting the increasing importance of corrosion research and prevention.
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