Amorphous Hf-based foams with aligned, elongated pores

Authors

• Marie E. Cox, Northwestern University
• Laszlo J. Kecskes, U.S. Army Research Laboratory
• Suveen N. Mathaudhu, U.S. Army Research Office
• David C. Dunand, Northwestern UniversityFollow

Document Type

Article

Date of this Version

2012

Citation

Materials Science and Engineering A 533 (2012) 124– 127; doi:10.1016/j.msea.2011.11.032

Abstract

Warm equal channel angular extrusion is used to consolidate a blend of amorphous Hf_44.5Cu₂₇Ni_13.5Ti₅Al₁₀ and crystalline W powders. Dissolution of the W phase results in ∼60% aligned, elongated pores within an amorphous Hf-based matrix exhibiting ductility in compression, but at lower strengths than similar amorphous Zr-based foams due to incomplete bonding between Hf-based powders.