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Article: Understanding the tensile ductility of a novel low-activation BCC high-entropy alloy deformed at intermediate temperature

TitleUnderstanding the tensile ductility of a novel low-activation BCC high-entropy alloy deformed at intermediate temperature
Authors
Jiang, HHe, BBHuang, MX
KeywordsBCC HEA
DBTT
Dislocation plasticity
Low-activation
Tensile ductility
Issue Date1-Nov-2024
PublisherElsevier
Citation
Scripta Materialia, 2024, v. 252 How to Cite?
DOI: http://dx.doi.org/10.1016/j.scriptamat.2024.116269
Abstract

Low-activation body-centered cubic (BCC) high-entropy alloys (HEAs) often possess poor tensile ductility. Here we report a novel low-activation VCrFeMn0.33 BCC HEA that exhibits good tensile ductility at 650 °C and above. However, it shows poor tensile ductility at 500 °C and below, indicating that the ductile-to-brittle transition temperature (DBTT) of the current HEA falls between 500 °C and 650 °C. At temperatures above DBTT, the current BCC HEA deforms via dislocation glide, similar to the tensile deformation observed in conventional ductile BCC alloys, which is rarely reported for non-refractory BCC HEAs.


Persistent Identifierhttp://hdl.handle.net/10722/348146
ISSN
1359-6462
2023 Impact Factor: 5.3
2023 SCImago Journal Rankings: 1.738
ISI Accession Number ID
WOS:001386480600001

 

DC FieldValueLanguage
dc.contributor.authorJiang, H-
dc.contributor.authorHe, BB-
dc.contributor.authorHuang, MX-
dc.date.accessioned2024-10-05T00:30:49Z-
dc.date.available2024-10-05T00:30:49Z-
dc.date.issued2024-11-01-
dc.identifier.citationScripta Materialia, 2024, v. 252-
dc.identifier.issn1359-6462-
dc.identifier.urihttp://hdl.handle.net/10722/348146-
dc.description.abstract<p>Low-activation body-centered cubic (BCC) high-entropy alloys (HEAs) often possess poor tensile ductility. Here we report a novel low-activation VCrFeMn0.33 BCC HEA that exhibits good tensile ductility at 650 °C and above. However, it shows poor tensile ductility at 500 °C and below, indicating that the ductile-to-brittle transition temperature (DBTT) of the current HEA falls between 500 °C and 650 °C. At temperatures above DBTT, the current BCC HEA deforms via dislocation glide, similar to the tensile deformation observed in conventional ductile BCC alloys, which is rarely reported for non-refractory BCC HEAs.</p>-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofScripta Materialia-
dc.subjectBCC HEA-
dc.subjectDBTT-
dc.subjectDislocation plasticity-
dc.subjectLow-activation-
dc.subjectTensile ductility-
dc.titleUnderstanding the tensile ductility of a novel low-activation BCC high-entropy alloy deformed at intermediate temperature-
dc.typeArticle-
dc.identifier.doi10.1016/j.scriptamat.2024.116269-
dc.identifier.scopuseid_2-s2.0-85197757072-
dc.identifier.volume252-
dc.identifier.isiWOS:001386480600001-
dc.identifier.issnl1359-6462-

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