Document Type

Journal Article

Publication Title

Progress in Natural Science: Materials International

ISSN

10020071

Volume

30

Issue

2

First Page

239

Last Page

245

Publisher

Elsevier

School

School of Engineering

Funders

Natural Science Foundation of Jiangsu Province

Comments

Wu, H., Huang, S., Zhu, C., Zhu, H., & Xie, Z. (2020). Influence of Cr content on the microstructure and mechanical properties of CrxFeNiCu high entropy alloys. Progress in Natural Science: Materials International, 30(2), 239 - 245. https://doi.org/10.1016/j.pnsc.2020.01.012

Abstract

© 2020 Chinese Materials Research Society The 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.

DOI

10.1016/j.pnsc.2020.01.012

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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