Superplasticity of whisker reinforced 2024 aluminum alloy composites fabricated by squeeze casting
- National Industrial Research Inst. of Nagoya (Japan)
Some ceramic whisker reinforced aluminum alloy composites having high specific tensile strength, good resistance to thermal fatigue and to wear have been commercialized as components of automobile etc.. However, since ceramic whiskers having high hardness are distributed in soft aluminum alloys, it is extremely difficult to machine them to produce complicated shape components. In order to overcome this difficulty, near-net shape production processes have been employed to produce metal matrix composite components. Squeeze casting is one of the most excellent production methods for near-net shape production in respect of production technique. Most of MMC products commercialized are being produced by squeeze casting. In squeeze casting, a preform made of fibers or whiskers is used as a reinforcement, and a molten metal is infiltrated into it by pressure. However, it is difficult to make a complicated shape preform and to infiltrate a molten metal into it without any damage. Therefore, there is a limit in the application of squeeze casting.
- OSTI ID:
- 92959
- Journal Information:
- Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 12 Vol. 32; ISSN 0956-716X; ISSN SCRMEX
- Country of Publication:
- United States
- Language:
- English
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