Metallurgical and Materials Transactions A

, Volume 45, Issue 8, pp 3609–3618 | Cite as

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

  • Zachary C. Cordero
  • Emily L. Huskins
  • Mansoo Park
  • Steven Livers
  • Megan Frary
  • Brian E. Schuster
  • Christopher A. Schuh
Article

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.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2014

Authors and Affiliations

  • Zachary C. Cordero
    • 1
  • Emily L. Huskins
    • 2
  • Mansoo Park
    • 1
  • Steven Livers
    • 3
  • Megan Frary
    • 3
  • Brian E. Schuster
    • 4
  • Christopher A. Schuh
    • 1
  1. 1.Department of Materials Science and EngineeringMITCambridgeUSA
  2. 2.Oak Ridge Institute for Science and Education Postdoctoral Fellowship ProgramArmy Research LaboratoryAberdeen Proving GroundUSA
  3. 3.Department of Materials Science & EngineeringBoise State UniversityBoiseUSA
  4. 4.Experimental and Computational Penetration Mechanics Team, Weapons and Materials Research DirectorateArmy Research LaboratoryAberdeen Proving GroundUSA

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