Calorimetric evaluation of nonequilibrium state in as-melt spun Al-1.72 and Al-3.12 At. Pct Cu Alloys and Al-6.74, Al-8.

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The authors would like to acknowledge the financial support of Alcoa, Anglo Blackwells Ltd., and the Science and Engineering Research Council. They are also grateful to D.A. Granger (Alcoa Technical Center) and S.R. Thistlethwaite (formerly with Anglo Blackwells) for many useful discussions regarding this work.

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Calorimetric Evaluation of Nonequilibrium State in As-Melt Spun A1-1.72 and AI-3.12 At. Pct Cu Alloys and AI-6.74, AI-8.48, and AI-11.97 At. Pct Si Alloys Y. ZHANG, T. YAMANE, S. SAJI, and J. TAKAHASHI Rapid solidification produces a nonequilibrium state in an alloy system, so that an enthalpy difference, ~[./ne exists between as-melt spun ribbon and the fully annealed ribbon at room temperature. In previous w o r k s , t1'2'31 w e have prop