Next Article in Journal
Microwave-Assisted Pillaring of a Montmorillonite with Al-Polycations in Concentrated Media
Next Article in Special Issue
Microstructures, Hardness and Corrosion Behaviors of FeCoNiNb0.5Mo0.5 and FeCoNiNb High-Entropy Alloys
Previous Article in Journal
Investigations for Thermal and Electrical Conductivity of ABS-Graphene Blended Prototypes
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Materials 2017, 10(8), 883;

Microstructure, Tensile and Creep Properties of Ta20Nb20Hf20Zr20Ti20 High Entropy Alloy

Israel Institute of Metals, Foundry Laboratory, Technion-Israel Institute of Technology, Haifa 3200003, Israel
Mechanical Engineering Department, ORT Braude College of Engineering, Karmiel 2161002, Israel
Author to whom correspondence should be addressed.
Received: 5 July 2017 / Revised: 26 July 2017 / Accepted: 27 July 2017 / Published: 31 July 2017
(This article belongs to the Special Issue High Entropy Alloys)
Full-Text   |   PDF [13758 KB, uploaded 2 August 2017]   |  


This paper examines the microstructure and mechanical properties of Ta20Nb20Hf20Zr20Ti20. Two casting processes, namely, gravity casting and suction-assisted casting, were applied, both followed by Hot Isostatic Pressing (HIP). The aim of the current study was to investigate the creep and tensile properties of the material, since the literature review revealed no data whatsoever regarding these properties. The main findings are that the HIP process is responsible for the appearance of a Hexagonal Close Packed (HCP) phase that is dispersed differently in these two castings. The HIP process also led to a considerable increase in the mechanical properties of both materials under compression, with values found to be higher than those reported in the literature. Contrary to the compression properties, both materials were found to be highly brittle under tension, either during room temperature tension tests or creep tests conducted at 282 °C. Fractography yielded brittle fracture without any evidence of plastic deformation prior to fracture. View Full-Text
Keywords: high-entropy alloy; microstructure; X-ray diffraction; mechanical properties high-entropy alloy; microstructure; X-ray diffraction; mechanical properties

Figure 1a

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).

Share & Cite This Article

MDPI and ACS Style

Larianovsky, N.; Katz-Demyanetz, A.; Eshed, E.; Regev, M. Microstructure, Tensile and Creep Properties of Ta20Nb20Hf20Zr20Ti20 High Entropy Alloy. Materials 2017, 10, 883.

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



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