Please use this identifier to cite or link to this item:
http://dx.doi.org/10.25673/36149
Title: | Microstructure evolution and mechanical properties of refractory Mo-Nb-V-W-Ti high-entropy alloys |
Author(s): | Regenberg, Maximilian Hasemann, Georg Wilke, Markus Halle, Thorsten Krüger, Manja |
Issue Date: | 2020 |
Type: | Article |
Language: | English |
URN: | urn:nbn:de:gbv:ma9:1-1981185920-363824 |
Subjects: | High-entropy alloys Refractory metals Mechanical properties Microstructure |
Abstract: | High-entropy alloys can either be defined as solid solution alloys containing at least five elements in equiatomic or near-equiatomic composition, or as alloys with high configurational entropies (larger than 1.5R), regardless of the number of elements involved. The present study reports on an alloy design route for refractory high-entropy alloys based on equiatomic Mo-Nb-V alloys with additions of W and Ti. In general, the work was motivated by Senkov et al. The aim of the experiments carried out was to produce a refractory high-entropy alloy with a single-phase structure. For this purpose, a systematic alloy design involving four- and five-element compositions was used. Scanning electron microscopy analysis has shown that Mo-Nb-V-xW-yTi (x = 0, 20; y = 5, 10, 15, 20, 25) is in fact a refractory high-entropy alloy with a body-centered cubic dendritic structure. Furthermore, the Ti-concentration of the experimental alloys was varied, to obtain the influence of Titanium on the microstructure development. Additionally, compressive tests at room temperature were carried out to evaluate the influence of the di erent alloying elements and the Ti-fraction on the mechanical properties. The observations of the present work are then compared to the published results on similar alloys from the working group of Yao et al. and critically discussed. |
URI: | https://opendata.uni-halle.de//handle/1981185920/36382 http://dx.doi.org/10.25673/36149 |
Open Access: | Open access publication |
License: | (CC BY 4.0) Creative Commons Attribution 4.0 |
Sponsor/Funder: | DFG-Publikationsfonds 2020 |
Journal Title: | Metals |
Publisher: | MDPI |
Publisher Place: | Basel |
Volume: | 10 |
Issue: | 11 |
Original Publication: | 10.3390/met10111530 |
Page Start: | 1 |
Page End: | 13 |
Appears in Collections: | Fakultät für Maschinenbau (OA) |
Files in This Item:
File | Description | Size | Format | |
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Regenberg et al._microstructure_2020.pdf | Zweitveröffentlichung | 1.9 MB | Adobe PDF | View/Open |