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Title: Distribution of Al{sub 12}Fe{sub 3}Si and (FeAl{sub 6})Si in a HIPed Al-10.71 wt. % Si casting

An investigation on microstructural development in a hot isostatically pressed (HIPed) Al-10.71 wt. % Si casting is described. The as-cast material contained 0.006 total volume fraction of Al{sub 12}Fe{sub 3}Si and (FeAl{sub 6})Si particles but HIPing at 550 C and 68.95 MPa produced a moderate increase in this fraction, to a maximum value of 0.061 when HIPed for 120 min. Dislocations appeared to be the dominant nucleation sites for the particles in both the as-cast and the HIPed materials.
Authors:
 [1]
  1. Univ. of Zambia, Lusaka (Zambia). Dept. of Metallurgy and Mineral Processing
Publication Date:
OSTI Identifier:
464790
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 37; Journal Issue: 4; Other Information: PBD: Oct 1996
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MICROSTRUCTURE; ALUMINIUM ALLOYS; SILICON ALLOYS; HOT PRESSING; IRON ADDITIONS; CASTINGS; PARTICLES; INTERMETALLIC COMPOUNDS; DISLOCATIONS; NUCLEATION