Document Type

Article

Publication Date

9-2007

Journal or Book Title

Gold Bulletin

Volume

40

Issue

32

First Page

199

Last Page

205

DOI

10.1007/BF03215581

Abstract

Au-7 at.% Pt Deformation-processed Metal Metal Composite (DMMC) was isothermally annealed at various times and temperatures. Avrami and Arrhenius relations were used to evaluate the kinetics of the transformation from the initial metastable nanofilamentary microstructure to the equilibrium homogeneous solid solution condition. Results indicated that the activation energy for this transformation was 167 ± 6 kJ/mol. This activation energy is lower than activation energies reported in the literature for planar interface, single crystal Au-Pt diffusion couple experiments. The effects of chemical potential, surface curvature, and strain effects on the empirical activation energies determined in the DMMC of this study are discussed. These factors are thought to cause the DMMC systems to reach equilibrium faster.

Comments

This article is from Gold Bulletin 40 (2007): 199–205, doi:10.1007/BF03215581.

Rights

This article is published under the Creative Commons Attribution 2,0 Generic license (CC BY 2.0).

Copyright Owner

The authors

Language

en

File Format

application/pdf

Included in

Metallurgy Commons

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