Effect of melt superheat on maximum nuclei density in A356 alloy

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Materials Characterization

DOI:https://doi.org/10.1016/1044-5803(95)80096-4· OSTI ID:94436

Venkataramani, R; Simpson, R; Ravindran, C ^[1]

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1. Ryerson Polytechnic Univ., Toronto, Ontario (Canada). Center for Near-Net-Shape Processing of Materials

Here, is the macro-micro modeling, in its present form, does not include the effect of melt superheat. In this work, identical castings of sand, permanent mold, and lost foam processes were produced by pouring aluminum alloy A356 at 700, 750, 800, 850, and 900 C. Grain size increased with pouring temperatures to different levels in the three processes. Cooling rates decreased with increasing pouring temperatures in sand and lost foam castings. Simulated cooling rates agreed closely with experimental values. The grain size-cooling rate relationship agreed well with published data. Maximum nuclei density, N{sub 0}, varied with the casting process and pouring temperatures.

• OSTI ID: 94436
• Report Number(s): CONF-940793--
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 1 Vol. 35; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
AUTOMOBILES
CASTING
MATERIALS
MATHEMATICAL MODELS
MICROSTRUCTURE
SOLIDIFICATION
TEMPERATURE DEPENDENCE
WEIGHT