Effects of Mn on the crystal structure of alpha-Al(Mn,Fe)Si particles in A356 alloys
In a commercial Al-7.0Si-0.38Mg cast alloy (A356) with 0.20wt% Fe, added Mn modifies acicular beta-Al5FeSi particles to less acicular alpha-Al(Mn,Fe)Si in both crystallization and precipitation conditions. The crystal structure of alpha-Al(Mn,Fe)Si changes from body-centered cubic (bcc)/ simple cubic (sc) to Pm3 structures in response to an increase in the bulk Mn content of the alloy. The alpha-Al(Mn,Fe)Si particles (50-200nm) precipitate during solution treatment and their precipitation temperature is about 485 degrees C in the as-cast condition. (c) 2006 Elsevier B.V. All rights reserved.
- Publisher
- ELSEVIER SCIENCE BV
- Issue Date
- 2006-05
- Language
- English
- Article Type
- Article
- Keywords
MG-SI ALLOYS; PRECIPITATION BEHAVIOR; PHASE; FE
- Citation
JOURNAL OF CRYSTAL GROWTH, v.291, no.1, pp.207 - 211
- ISSN
- 0022-0248
- Appears in Collection
- MS-Journal Papers(저널논문)
- Files in This Item
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