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Influence of Cr content on the microstructure and mechanical properties of CrₓFeNiCu high entropy alloys

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dc.contributor.authorWu, H.
dc.contributor.authorHuang, S.
dc.contributor.authorZhu, C.
dc.contributor.authorZhu, H.
dc.contributor.authorXie, Z.
dc.date.issued2020
dc.description.abstractThe effect of Cr content on the microstructure and mechanical properties of CrxFeNiCu high entropy alloys (HEAs) was firstly studied by first-principles calculations. The calculated results show that the hardness of the alloys increased with the expense of its plasticity decrease, if the content of Cr in the alloy increased. In order to verify the calculated results, CrxFeNiCu (x = 0.8, 1, 1.5 and 2) high entropy alloys were synthesized by vacuum induction melting in the present study. The results show that as the value of x increased from 0.8 to 2, the crystal structure changed from single phase face centered cubic (FCC) phase to a mixture of FCC and body centered cubic (BCC) phases. For the single phase FCC (x = 0.8) structure, both the tensile strength and hardness values were low, which were 491.6 MPa and 322.2 HV respectively, however, the plasticity was high, reaching 33.2%. With the formation and growth of BCC phase (x = 2) the tensile strength and hardness of the alloy were significantly improved, which were 872.6 MPa and 808 HV, respectively.
dc.description.statementofresponsibilityHao Wu, Sirui Huang, Chengyan Zhu, Heguo Zhu, Zonghan Xie
dc.identifier.citationProgress in Natural Science: Materials International, 2020; 30(2):239-245
dc.identifier.doi10.1016/j.pnsc.2020.01.012
dc.identifier.issn1002-0071
dc.identifier.issn1745-5391
dc.identifier.urihttp://hdl.handle.net/2440/128585
dc.language.isoen
dc.publisherElsevier
dc.relation.grantARC
dc.rights© 2020 Chinese Materials Research Society. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
dc.source.urihttps://doi.org/10.1016/j.pnsc.2020.01.012
dc.subjectCrxFeNiCu high entropy alloy; first-principle calculations; microstructure; mechanical properties; strengthening mechanism
dc.titleInfluence of Cr content on the microstructure and mechanical properties of CrₓFeNiCu high entropy alloys
dc.title.alternativeInfluence of Cr content on the microstructure and mechanical properties of Cr(x)FeNiCu high entropy alloys
dc.typeJournal article
pubs.publication-statusPublished

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