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| Diffusion-induced Stresses |
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Cite this article:
. Diffusion-induced Stresses. Acta Metall Sin, 2006, 42(3): 225-233 .
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Abstract Recent experiments indicate that stresses induced by atomic interdiffusion in solids can not only result in the macro-distortion of materials, but also form some peculiar micro-structures in the materials. Considered that little has been known in a detailed way of the mechanisms of diffusion-induced stresses, the relationship of atomic diffusion and stresses in solids will be elucidated and the concepts of creep-induced diffusion and diffusion-induced stresses are clarified in this paper. Based on the volume growth rate of a flow point, an equation is obtained for the relationship of stresses of flow point and atomic diffusion fluxes and therefore a general theory is constructed to describe the phenomena of diffusion-induced stresses and strains, e.g. the bending of thin diffusion couples and the periodic layer formation during solid state reactions.
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Received: 07 June 2005
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