Powder-Route Synthesis and Mechanical Testing of Ultrafine Grain Tungsten Alloys

Author(s)
Cordero, Zachary C.; Huskins, Emily L.; Park, Mansoo; Livers, Steven; Frary, Megan; ... Show more
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Abstract
We report a W-rich alloy (W-7Cr-9Fe, at. pct) produced by high-energy ball milling, with alloying additions that both lower the densification temperature and retard grain growth. The alloy’s consolidation behavior and the resultant compacts’ microstructure and mechanical properties are explored. Under one condition, a 98 pct dense compact with a mean grain size of 130 nm was achieved, and exhibited a hardness of 13.5 GPa, a dynamic uniaxial yield strength of 4.14 GPa in Kolsky bar experiments, and signs of structural shear localization during deformation.
Date issued
2014-04
URI
http://hdl.handle.net/1721.1/103306
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Journal
Metallurgical and Materials Transactions A
Publisher
Springer US
Citation
Cordero, Zachary C. et al. “Powder-Route Synthesis and Mechanical Testing of Ultrafine Grain Tungsten Alloys.” Metallurgical and Materials Transactions A 45.8 (2014): 3609–3618.
Version: Author's final manuscript
ISSN
1073-5623
1543-1940
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