Next Article in Journal
Synthesis and Characterization of “Ravine-Like” BCN Compounds with High Capacitance
Previous Article in Journal
Effect of Fluoride on the Morphology and Electrochemical Property of Co3O4 Nanostructures for Hydrazine Detection
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Materials 2018, 11(2), 208; https://doi.org/10.3390/ma11020208

The Microstructure and Mechanical Properties of Refractory High-Entropy Alloys with High Plasticity

1,2
,
1,2,* , 1,2
,
1,2
,
1,2
and
1,2
1
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
2
National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, China
*
Author to whom correspondence should be addressed.
Received: 15 November 2017 / Revised: 23 January 2018 / Accepted: 24 January 2018 / Published: 29 January 2018
(This article belongs to the Section Structure Analysis and Characterization)
View Full-Text   |   Download PDF [15727 KB, uploaded 29 January 2018]   |  

Abstract

Refractory high-entropy alloys (RHEAs) are promising materials used at high temperature, but their low plasticity restricts their application. Based on the valence electron concentration (VEC) principle, four kinds of RHEAs (ZrTiHfV0.5Nb0.5, Zr2.0TiHfVNb2.0, ZrTiHfNb0.5Mo0.5, and ZrTiHfNb0.5Ta0.5) are designed (VEC < 4.5). The experimental results show that the plasticity of these alloys was greatly improved: the static compressive strain was higher than 50% at room temperature (RT), and some elongations were produced in the tensile process. Moreover, the microstructure and phase composition are discussed in detail. The addition of Nb, Mo, and Ta contributed to the high-temperature strength. Finally, the dynamic mechanical properties of these RHEAs with coordination between strength and plasticity are investigated. View Full-Text
Keywords: RHEAs; alloys design; microstructure and mechanical properties RHEAs; alloys design; microstructure and mechanical properties
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Chen, Y.; Li, Y.; Cheng, X.; Wu, C.; Cheng, B.; Xu, Z. The Microstructure and Mechanical Properties of Refractory High-Entropy Alloys with High Plasticity. Materials 2018, 11, 208.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top