Material Characterisation and Mechanical Properties of WNbMoVAlxCry (x=0.5, 1 y= 0.5, 1) Refractory High Entropy Alloys

Mumin Biyiklioglu, Kubra Gurcan Bayrak, Erhan Ayas, Bedri Baksan, Hasan Gokce, Duygu Agaogullari, Mustafa Lutfi Ovecoglu

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

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.

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publications Ltd
Pages33-39
Number of pages7
DOIs
Publication statusPublished - 2024

Publication series

NameMaterials Science Forum
Volume1133
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Bibliographical note

Publisher Copyright:
© 2024 Trans Tech Publications Ltd, All Rights Reserved.

Keywords

  • Compression Strength
  • Refractory High Entropy Alloys
  • Spark Plasma Sintering

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