Material characterisation and mechanical properties of WNbMoVAlxCry (x=0.5, 1 y= 0.5, 1) Refractory High Entropy Alloys

Biyiklioglu, Mumin, Bayrak, Kubra Gurcan, Ayas, Erhan, Baksan, Bedri, Gokce, Hasan, Agaogullari, Duygu and Ovecoglu, Mustafa Lutfi 2025. Material characterisation and mechanical properties of WNbMoVAlxCry (x=0.5, 1 y= 0.5, 1) Refractory High Entropy Alloys. Materials Science Forum 1133 , pp. 33-39. 10.4028/p-2Zp4Wu

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Abstract

WNbMoVAlxCry RHEA series are consolidated via spark plasma sintering with using mechanically alloyed powders. Mechanical alloying of W NbMoVAlCr alloy was conducted for up to 8 hours at 2-hour intervals to determine the ideal alloying time. Mechanical alloying resulted in the formation of a single phase, with the disappearance of elemental peaks and flattening of peaks. XRD peaks revealed a body-centred cubic and Laves phases. SEM and point EDS results showed homogeneous distribution of elements. Mechanical alloying had a positive effect up to 6 hours, with the highest hardness value of 12.57 GPa. The highest compressive strength at room temperature was 1397 MPa, while the lowest strength at 900°C was 172 MPa. Al and Cr had no clear effect on hardness and compression strength, with no clear trend on improvement or reduction in mechanical properties.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	Trans Tech Publications
ISSN:	1662-9752
Last Modified:	04 Feb 2025 14:45
URI:	https://orca.cardiff.ac.uk/id/eprint/175754

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