中文版 | English
Title

Enhanced strain hardening induced by twin boundary-dislocation interaction in micro-pillar compression of CoCrNi medium-entropy alloy

Author
Corresponding AuthorHe,B. B.
Publication Years
2022-08-01
DOI
Source Title
ISSN
2589-1529
Volume24
Abstract
In this contribution, we compare the mechanical behaviors of single crystal micro-pillars of CoCrNi medium -entropy alloy with and without deformation twins during compression test. It is found that the micro-pillar with deformation twins maintains higher increment of flow stress as compared to the one without deformation twins. The enhanced strain hardening behavior is ascribed to the substantially increased dislocation density resulted from the intensive twin boundary-dislocation interaction. The present study evidences the critical role of deformation twinning in the improved work hardening behavior of twinning-related deformation mechanism of alloys with low stacking fault energy such as CoCrNi.
Keywords
URL[Source Record]
Indexed By
ESCI ; EI
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
Natural Science Foundation of China[U52071173] ; Science and Technology Innova-tion Commission of Shenzhen["JCYJ20210324120209026","ZDSYS20200810171201007","KQTD2019092917250571"] ; Guang-dong Basic and Applied Basic Research Foundation[2021A1515110480]
WOS Research Area
Materials Science
WOS Subject
Materials Science, Multidisciplinary
WOS Accession No
WOS:000827348400011
Publisher
EI Accession Number
20222612294806
EI Keywords
Cobalt alloys ; Compression testing ; Deformation ; Entropy ; High-entropy alloys ; Single crystals ; Strain hardening ; Twinning
ESI Classification Code
Metallurgy and Metallography:531 ; Heat Treatment Processes:537.1 ; Chromium and Alloys:543.1 ; Iron Alloys:545.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Crystalline Solids:933.1 ; Crystal Growth:933.1.2
Scopus EID
2-s2.0-85132917619
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/352479
DepartmentDepartment of Mechanical and Energy Engineering
Affiliation
1.Shenzhen Key Laboratory of Cross-Scale Manufacturing Mechanics,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Mechanical and Energy Engineering,SUSTech: Southern University of Science and Technology,Shenzhen,1088 Xueyuan Ave, Nanshan,518055,China
First Author AffilicationSouthern University of Science and Technology;  Department of Mechanical and Energy Engineering
Corresponding Author AffilicationSouthern University of Science and Technology;  Department of Mechanical and Energy Engineering
First Author's First AffilicationSouthern University of Science and Technology
Recommended Citation
GB/T 7714
Shang,X. K.,Guan,Q. W.,He,B. B.. Enhanced strain hardening induced by twin boundary-dislocation interaction in micro-pillar compression of CoCrNi medium-entropy alloy[J]. Materialia,2022,24.
APA
Shang,X. K.,Guan,Q. W.,&He,B. B..(2022).Enhanced strain hardening induced by twin boundary-dislocation interaction in micro-pillar compression of CoCrNi medium-entropy alloy.Materialia,24.
MLA
Shang,X. K.,et al."Enhanced strain hardening induced by twin boundary-dislocation interaction in micro-pillar compression of CoCrNi medium-entropy alloy".Materialia 24(2022).
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