Permanent Mold Casting of JIS-AC4C Aluminum Alloy Using a Low-Temperature Mold

Journal Article · Mon Jan 17 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3552534· OSTI ID:21510190

Yamagata, Hiroshi; Nikawa, Makoto

Permanent mold casting using mold temperatures below 200 deg. C was conducted to obtain a high-strength, thin-walled casting. Al-7.36 mass% Si -0.18 Cu- 0.27Mg-0.34Fe alloy JIS-AC4C was cast using a bottom pouring cast plan. The product had a rectangular tube shape (70 mm W x 68 mm D x 180 mm H) with wall thicknesses of 1, 3 and 5 mm. The effect of heat insulation at the melt path was compared when using a sand runner insert and when using a steel runner insert as well as a powder mold release agent. Fine microstructures were observed in the casting. The smaller the thickness, the higher the hardness with smaller secondary dendrite arm spacing (SDAS). However, the hardness and the SDAS were unaffected by the mold temperature. It was proposed that the avoidance of the formation of primary {alpha} dendrite at the melt path generates a higher strength casting with adequate mold filling.

• OSTI ID: 21510190
• Journal Information: AIP Conference Proceedings, Vol. 1315, Issue 1; Conference: AMPT2010: International conference on advances in materials and processing technologies, Paris (France), 24-27 Oct 2010; Other Information: DOI: 10.1063/1.3552534; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
AVOIDANCE
CASTING
CASTING MOLDS
COPPER ALLOYS
FUNGI
HARDNESS
HEAT
HEAT TRANSFER
IRON ALLOYS
MAGNESIUM ALLOYS
MASS
MICROSTRUCTURE
MOLDING
POWDERS
SAND
SILICON ALLOYS
STEELS
THERMAL INSULATION
THICKNESS
ALLOYS
BEHAVIOR
CARBON ADDITIONS
DIMENSIONS
ENERGY
ENERGY TRANSFER
FABRICATION
IRON BASE ALLOYS
MECHANICAL PROPERTIES
PLANTS
TRANSITION ELEMENT ALLOYS