Challenges in the development of aluminium-based bulk amorphous alloys

Claudio Shyinti Kiminami, N. D. Basim, Michael J. Kaufman, M. F. Amateau, Timothy John Eden, J. M. Galbraith

Research output: Contribution to journalConference article

24 Citations (Scopus)

Abstract

The high tensile strengths of amorphous Al alloys (containing up to 90at% Al) make these alloys good candidates for high specific strength applications. The challenges continue to be both the high cooling rates necessary to produce the glassy structures which, to date, has limited the product to thin ribbons (or splats) and fine powders and the necessary consolidation into bulk volumes before application; with only a few exceptions, the consolidation process leads to devitrification and loss of the unique properties of the glass. This paper addresses this challenge by reviewing recent results aimed at (a) identifying new alloy compositions with high glass forming ability; (b) identifying new alloy compositions with extensive supercooled liquid regions; (c) improving the consolidation processes. For example, spray forming was recently used to process a partially amorphous 7 kg billet of Al84Ni5Y9Co2 indicating that it might be possible to produce Al-based bulk metallic glass using bulk processing schemes that have intermediate cooling rates. These results and their implications will be discussed.

Original languageEnglish (US)
Pages (from-to)503-508
Number of pages6
JournalKey Engineering Materials
Volume189-191
StatePublished - Jan 1 2001

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Amorphous alloys
Aluminum
Consolidation
Cooling
Glass
Metallic glass
Chemical analysis
Powders
Tensile strength
Liquids
Processing

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kiminami, C. S., Basim, N. D., Kaufman, M. J., Amateau, M. F., Eden, T. J., & Galbraith, J. M. (2001). Challenges in the development of aluminium-based bulk amorphous alloys. Key Engineering Materials, 189-191, 503-508.
Kiminami, Claudio Shyinti ; Basim, N. D. ; Kaufman, Michael J. ; Amateau, M. F. ; Eden, Timothy John ; Galbraith, J. M. / Challenges in the development of aluminium-based bulk amorphous alloys. In: Key Engineering Materials. 2001 ; Vol. 189-191. pp. 503-508.
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Kiminami, CS, Basim, ND, Kaufman, MJ, Amateau, MF, Eden, TJ & Galbraith, JM 2001, 'Challenges in the development of aluminium-based bulk amorphous alloys', Key Engineering Materials, vol. 189-191, pp. 503-508.

Challenges in the development of aluminium-based bulk amorphous alloys. / Kiminami, Claudio Shyinti; Basim, N. D.; Kaufman, Michael J.; Amateau, M. F.; Eden, Timothy John; Galbraith, J. M.

In: Key Engineering Materials, Vol. 189-191, 01.01.2001, p. 503-508.

Research output: Contribution to journalConference article

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AU - Kiminami, Claudio Shyinti

AU - Basim, N. D.

AU - Kaufman, Michael J.

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AU - Eden, Timothy John

AU - Galbraith, J. M.

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Kiminami CS, Basim ND, Kaufman MJ, Amateau MF, Eden TJ, Galbraith JM. Challenges in the development of aluminium-based bulk amorphous alloys. Key Engineering Materials. 2001 Jan 1;189-191:503-508.