{"title":"Short-term tensile creep behavior of CoCrNi-based multi-principal element alloys","authors":"Kaiju Lu, Jarir Aktaa","doi":"10.1016/j.intermet.2024.108500","DOIUrl":null,"url":null,"abstract":"<div><div>We report the short-term tensile creep behavior of CoCrFeMnNi and CoCrNi model MPEAs at 550 °C. Dislocation glide and dislocation-dislocation/lattice interactions are proposed to be dominated deformation mechanisms for CoCrFeMnNi and CoCrNi, respectively. Besides, compared to CoCrFeMnNi, CoCrNi exhibits lower creep rate and longer rupture time at same testing conditions. This is attributed to CoCrNi's lower stacking fault energy and higher lattice friction. Additionally, the effect of grain size on the short-term creep behavior of CoCrFeMnNi was revealed.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"175 ","pages":"Article 108500"},"PeriodicalIF":4.3000,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0966979524003194/pdfft?md5=94076ce94cd3ec7477ea8e3f4f65e41c&pid=1-s2.0-S0966979524003194-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Intermetallics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0966979524003194","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
We report the short-term tensile creep behavior of CoCrFeMnNi and CoCrNi model MPEAs at 550 °C. Dislocation glide and dislocation-dislocation/lattice interactions are proposed to be dominated deformation mechanisms for CoCrFeMnNi and CoCrNi, respectively. Besides, compared to CoCrFeMnNi, CoCrNi exhibits lower creep rate and longer rupture time at same testing conditions. This is attributed to CoCrNi's lower stacking fault energy and higher lattice friction. Additionally, the effect of grain size on the short-term creep behavior of CoCrFeMnNi was revealed.
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This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys.
The journal reports the science and engineering of metallic materials in the following aspects:
Theories and experiments which address the relationship between property and structure in all length scales.
Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations.
Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties.
Technological applications resulting from the understanding of property-structure relationship in materials.
Novel and cutting-edge results warranting rapid communication.
The journal also publishes special issues on selected topics and overviews by invitation only.
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