Long-Term Life of Ni/Cu Bellows: Effect of Diffusion on Thermomechanical Properties

Abstract : The aim of this paper is to discuss different couplings between diffusion, re- crystallisation/grain growth, strain/stress, heat transfer and thermo-mechanical behaviour of metallic materials. The understanding of these different physical phenomena is needed to predict the long-term life of mechanical parts in components. Some results are presented and further studies are suggested to improve the evaluation of the (inter)diffusion and re- crystallisation parameters in fine-grained electroplated Ni/Cu materials. To illustrate the coupling between elasticity and diffusion, classical results in homogenisation consistent with the main diffusion regime are used to predict the change in elastic moduli with time.
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Submitted on : Tuesday, September 21, 2004 - 5:11:41 PM
Last modification on : Saturday, May 25, 2019 - 1:44:44 AM
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Olivier Arnould, François Hild. Long-Term Life of Ni/Cu Bellows: Effect of Diffusion on Thermomechanical Properties. Defect and Diffusion Forum, Trans Tech Publications, 2002, 203-205, pp.61-80. ⟨hal-00002921⟩

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