Abstract
A new transient liquid phase sintering process described as an In-Situ Microfusion (ISM) process [1–3] has been developed for AlFe alloys, where conventional liquid phase sintering is restricted. The liquid phase in the ISM process is formed by the heat generated in an exothermic reaction of the alloy system, and the liquid volume is controlled by the thermodynamics of the reaction instead of by phase equilibria as in conventional liquid phase sintering. The present work investigated the parameters associated with the liquid formation and its volume control during the ISM process. These include the determination of the liquid volume, the relationship between the liquid volume and densification, and finally, the control of the liquid volume, to obtain nearly full densification. 1. 1. M. S. Maclean, British Patent Application No. 8519691 (1985). 2. 2. M. S. Maclean and R. Dower, A Report on the ISM Process of AlFe Alloys, NEL, Glasgow (1985). 3. 3. B. Munar, M. S. Maclean and R. Dower, Symposium of Powder Metallurgy of 90's, London, Vol. 3, p. 89 (1990).
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