Powder Metallurgy Processing of a Wx TaTiVCr High-Entropy Alloy and Its Derivative Alloys for Fusion Material Applications

Scientific Reports
Owais Ahmed Waseem, Ho Jin Ryu

Abstract

The WxTaTiVCr high-entropy alloy with 32at.% of tungsten (W) and its derivative alloys with 42 to 90at.% of W with in-situ TiC were prepared via the mixing of elemental W, Ta, Ti, V and Cr powders followed by spark plasma sintering for the development of reduced-activation alloys for fusion plasma-facing materials. Characterization of the sintered samples revealed a BCC lattice and a multi-phase structure. The selected-area diffraction patterns confirmed the formation of TiC in the high-entropy alloy and its derivative alloys. It revealed the development of C15 (cubic) Laves phases as well in alloys with 71 to 90at.% W. A mechanical examination of the samples revealed a more than twofold improvement in the hardness and strength due to solid-solution strengthening and dispersion strengthening. This study explored the potential of powder metallurgy processing for the fabrication of a high-entropy alloy and other derived compositions with enhanced hardness and strength.

References

Aug 28, 2014·Scientific Reports·Yiping LuTingju Li
Mar 6, 2015·Nature Communications·O N SenkovC Woodward
Jul 15, 2015·Nature Communications·Yu ZouRalph Spolenak
Jul 23, 2015·Scientific Reports·Xiaoqing LiLevente Vitos
Feb 3, 2016·Nature Communications·Bernd GludovatzRobert O Ritchie
Aug 6, 2016·ACS Combinatorial Science·Benjamin Ruiz-YiJason Hattrick-Simpers

❮ Previous
Next ❯

Citations

Mar 7, 2019·Science Advances·O El-AtwaniE Martinez
Oct 20, 2020·Physical Chemistry Chemical Physics : PCCP·Damian SobierajDuc Nguyen-Manh
Jan 15, 2021·Entropy·Ed J PickeringAmy S Gandy

❮ Previous
Next ❯

Methods Mentioned

BETA
x-ray
transmission electron microscopy
electron probe
electron diffraction

Related Concepts

Related Feeds

Carcinoma, Basal Cell

Basal cell carcinoma is a form of malignant skin cancer found on the head and neck regions and has low rates of metastasis. Discover the latest research on basal cell carcinoma here.