Metallurgical and Materials Transactions A

, Volume 41, Issue 7, pp 1706–1713 | Cite as

Amorphous Zr-Based Foams with Aligned, Elongated Pores

  • Marie E. Cox
  • Suveen N. Mathaudhu
  • K. Ted Hartwig
  • David C. Dunand
Symposium: Bulk Metallic Glasses VI

Abstract

Interpenetrating phase composites are created by warm equal channel angular extrusion (ECAE) of blended powders of amorphous Zr58.5Nb2.8Cu15.6Ni12.8Al10.3 (Vit106a) and a crystalline ductile metal (Cu, Ni, or W). Subsequent dissolution of the continuous metallic phase results in amorphous Vit106a foams with ~40 pct aligned, elongated pores. The extent of Vit106a powder densification in the composites improves with the strength of the crystalline metallic powder, from low for Cu to high for W, with a concomitant improvement in foam compressive strength, ductility, and energy absorption.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2009

Authors and Affiliations

  • Marie E. Cox
    • 1
  • Suveen N. Mathaudhu
    • 2
  • K. Ted Hartwig
    • 3
  • David C. Dunand
    • 1
  1. 1.Department of Materials Science and EngineeringNorthwestern UniversityEvanstonUSA
  2. 2.United States Army Research LaboratoryWeapons and Materials Research DirectorateAberdeen Proving GroundUSA
  3. 3.Department of Mechanical EngineeringTexas A&M UniversityCollege StationUSA

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