Physical basis for model with various inelastic mechanisms for nickel base superalloy
Source: Materials Science and Technology, Volume 20, Number 6, June 2004 , pp. 747-755(9)
Publisher: Maney Publishing
Abstract:Two mechanical behaviour models for N – 18 alloy are proposed. The material is a powder metallurgy nickel base superalloy hardened by 60% volume of the ordered ′ phase. The behaviour of alloy N – 18 is modelled by classical constitutive equations involving plasticity and creep. The experimental data used include stress relaxation and creep tests. An updated version of the first model is proposed and compared to the experimental data set. A new model is also presented with equations based on physical concepts. Material parameter identification is performed for each model, and experimental results are in good agreement with theoretical simulations.
Document Type: Research Article
Affiliations: 1: LMSSDT, Ecole Supérieure des Sciences et Techniques de Tunis 2: Aubert et Duval les Ancises 63770 France. 3: Centre Des Matériaux P. M.Fourt, Ecole Supe´rieure des Mines de Paris Evry, France.
Publication date: 2004-06-01
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