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Article: Heavily twinned CoCrNi medium-entropy alloy with superior strength and crack resistance

TitleHeavily twinned CoCrNi medium-entropy alloy with superior strength and crack resistance
Authors
Feng, XiaobinYang, HaokunFan, RongZhang, WenqiangMeng, FanlingGan, BinLu, Yang
KeywordsCrack resistance
Deformation twin
In-situ tensile test
Medium-entropy alloy
Strength
Issue Date2020
Citation
Materials Science and Engineering A, 2020, v. 788, article no. 139591 How to Cite?
DOI: http://dx.doi.org/10.1016/j.msea.2020.139591
AbstractThe recrystallized and pre-deformed CoCrNi medium-entropy alloy (MEA), introduced with high-density deformation twins, exhibits an unprecedented high yield strength up to 2.1 GPa. We found that the highly distorted deformation twins provide strong resistance to crack propagation and the activated dislocation motion accommodates the further plastic deformation. Our in situ tensile tests of pre-notched sample reveal that crack propagation through strain localization band eventually leads to fracture. This result offers new insights on design and processing of MEA for desired mechanical performance.
Persistent Identifierhttp://hdl.handle.net/10722/326389
ISSN
0921-5093
2021 Impact Factor: 6.044
2020 SCImago Journal Rankings: 1.574

 

DC FieldValueLanguage
dc.contributor.authorFeng, Xiaobin-
dc.contributor.authorYang, Haokun-
dc.contributor.authorFan, Rong-
dc.contributor.authorZhang, Wenqiang-
dc.contributor.authorMeng, Fanling-
dc.contributor.authorGan, Bin-
dc.contributor.authorLu, Yang-
dc.date.accessioned2023-03-09T10:00:18Z-
dc.date.available2023-03-09T10:00:18Z-
dc.date.issued2020-
dc.identifier.citationMaterials Science and Engineering A, 2020, v. 788, article no. 139591-
dc.identifier.issn0921-5093-
dc.identifier.urihttp://hdl.handle.net/10722/326389-
dc.description.abstractThe recrystallized and pre-deformed CoCrNi medium-entropy alloy (MEA), introduced with high-density deformation twins, exhibits an unprecedented high yield strength up to 2.1 GPa. We found that the highly distorted deformation twins provide strong resistance to crack propagation and the activated dislocation motion accommodates the further plastic deformation. Our in situ tensile tests of pre-notched sample reveal that crack propagation through strain localization band eventually leads to fracture. This result offers new insights on design and processing of MEA for desired mechanical performance.-
dc.languageeng-
dc.relation.ispartofMaterials Science and Engineering A-
dc.subjectCrack resistance-
dc.subjectDeformation twin-
dc.subjectIn-situ tensile test-
dc.subjectMedium-entropy alloy-
dc.subjectStrength-
dc.titleHeavily twinned CoCrNi medium-entropy alloy with superior strength and crack resistance-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.msea.2020.139591-
dc.identifier.scopuseid_2-s2.0-85085275069-
dc.identifier.volume788-
dc.identifier.spagearticle no. 139591-
dc.identifier.epagearticle no. 139591-

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