Amorphous Hf-based foams with aligned, elongated pores

Marie E. Cox; Laszlo J. Kecskes; Suveen N. Mathaudhu; David C. Dunand

doi:10.1016/j.msea.2011.11.032

Amorphous Hf-based foams with aligned, elongated pores

Marie E. Cox, Laszlo J. Kecskes, Suveen N. Mathaudhu, David C. Dunand^*

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Warm equal channel angular extrusion is used to consolidate a blend of amorphous Hf _44.5Cu ₂₇Ni _13.5Ti ₅Al ₁₀ 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.

Original language	English (US)
Pages (from-to)	124-127
Number of pages	4
Journal	Materials Science and Engineering A
Volume	533
DOIs	https://doi.org/10.1016/j.msea.2011.11.032
State	Published - Jan 30 2012

Keywords

Bulk amorphous alloy
Cellular materials
Equal channel angular processing
Hafnium-based glassy alloy
Porous materials

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2011.11.032

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title = "Amorphous Hf-based foams with aligned, elongated pores",

abstract = "Warm equal channel angular extrusion is used to consolidate a blend of amorphous Hf 44.5Cu 27Ni 13.5Ti 5Al 10 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.",

keywords = "Bulk amorphous alloy, Cellular materials, Equal channel angular processing, Hafnium-based glassy alloy, Porous materials",

author = "Cox, {Marie E.} and Kecskes, {Laszlo J.} and Mathaudhu, {Suveen N.} and Dunand, {David C.}",

note = "Funding Information: MEC was supported by a National Science Foundation Graduate Research Fellowship . The authors thank Mr. Larry Jones at Ames Laboratory (Department of Energy) for BMG powder preparation; they acknowledge useful discussions with, and use of the ECAE equipment of, Prof. K. Ted Hartwig (Texas A&M University, TAMU) as well as the experimental assistance of Mr. Robert Barber (TAMU) in operating the equipment.",

year = "2012",

month = jan,

day = "30",

doi = "10.1016/j.msea.2011.11.032",

language = "English (US)",

volume = "533",

pages = "124--127",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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publisher = "Elsevier BV",

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T1 - Amorphous Hf-based foams with aligned, elongated pores

AU - Cox, Marie E.

AU - Kecskes, Laszlo J.

AU - Mathaudhu, Suveen N.

AU - Dunand, David C.

N1 - Funding Information: MEC was supported by a National Science Foundation Graduate Research Fellowship . The authors thank Mr. Larry Jones at Ames Laboratory (Department of Energy) for BMG powder preparation; they acknowledge useful discussions with, and use of the ECAE equipment of, Prof. K. Ted Hartwig (Texas A&M University, TAMU) as well as the experimental assistance of Mr. Robert Barber (TAMU) in operating the equipment.

PY - 2012/1/30

Y1 - 2012/1/30

N2 - Warm equal channel angular extrusion is used to consolidate a blend of amorphous Hf 44.5Cu 27Ni 13.5Ti 5Al 10 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.

AB - Warm equal channel angular extrusion is used to consolidate a blend of amorphous Hf 44.5Cu 27Ni 13.5Ti 5Al 10 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.

KW - Bulk amorphous alloy

KW - Cellular materials

KW - Equal channel angular processing

KW - Hafnium-based glassy alloy

KW - Porous materials

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DO - 10.1016/j.msea.2011.11.032

M3 - Article

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SN - 0921-5093

VL - 533

SP - 124

EP - 127

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

ER -

Amorphous Hf-based foams with aligned, elongated pores

Abstract

Keywords

ASJC Scopus subject areas

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