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Explanation
Al-Si-Cu
Effects of solidification morphology on properties and quality of hypoeutectic
Al-Si-Cu alloy die castings
Naomi NISHI
Dept. of Mechanical and Production Engineering, Institute of Technologists
Abstract Aluminum alloys are widely used for die casting because lightweight, excellent corrosion resistance, and well dimensional stability. Especially in Japan hypoeutectic systems Al-Si-Cu alloy are used about 95%. In this paper, some properties such as mechanical properties, fluidity and casting defects formation of JIS-ADC10 and JIS-ADC12 alloy die casting were discussed. Solidification morphology of ADC10 is a mussy type and its of ADC12 is close to a skin-formation type. Therefore, both alloys have different mechanical properties, flowability, and casting defects such as shrinkage porosities. It is desirable to use both alloys properly depending on the application.
Key Words : Die casting, Aluminum alloy, ADC10, ADC12,Solidification morphology
97% JIS H 5302:2006 ADC 9 ISO 11 20 Al-Si-Cu ADC10 ADC12 ADC12 JIS H 5302:2006 JIS H 2118:2006 1 1) Al-Si Al-Mg 2 Al-Si
51 The Bulletin of Institute of Technologists, No. 9
52 ADC10 ADC12 Cu Si 2 ADC10 Si 7.5 9.5% Cu 2.5 4.0% ADC12 Si 9.6 12.0% Cu 1.5 3.5% Si Cu 2 Cu Si Al-Si Al-Si Si 12.6% ADC10 Si ADC12 Si 2 ADC10 ADC12 Si Cu 3 (a) (b) 5) Al-12.6%Si Al-6%Si 3
Thermo-Calc ADC10 ADC12
53 The Bulletin of Institute of Technologists, No. 9
55 The Bulletin of Institute of Technologists, No. 9
