M.K., Surappa and P K , Rohtagi (1981) Fluidity of aluminum-silicon-alumina composite. Metallurgical Transactions B, 12. pp. 327-332. ISSN 0360-2141

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Abstract

Fluidity of Al-11.8 pet Si alloy containing up to 5.5 wt pet dispersed ν-A12O3 particles has been studied. Spiral fluidity of Al-11.8 pet Si alloy decreases with an increase in the amount of dispersed alumina particles (for a given size) and decrease in the particle size (for a given weight percent). The spiral fluidity(F) of Al-11.8 pet Si-Al2O3 composite correlates well with the total surface area of dispersed A12O3 particles and it can be expressed by the equation of the typeF = a − bx wherex represents the total surface area of alumina particles present in unit weight of the composite and, a and b are constants. Part of the observed decreases in fluidity could be attributed to expected increases in the effective viscosity of composite melts due to the presence of dispersed A12O3 particles. However, the fluidity of Al-11.8 pct Si-5.5 pet A12O3 (60µm) composite poured at 740 °C is at the same level as of Al-11.8 pet Si alloy poured at 700 °C. Hence, the fluidity of Al-11.8 pet Si alloy containing up to 5.5 wt pet A12O3 particles is adequate to make variety of castings at 740 °C.

Item Type:	Article
Subjects:	Material/Component Development, Processing and Characterization
Divisions:	UNSPECIFIED
Depositing User:	Mr. B.K. Prasad
Date Deposited:	07 Nov 2013 11:15
Last Modified:	05 Mar 2014 07:36
URI:	http://ampri.csircentral.net/id/eprint/768

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