Comptes Rendus
A contribution to the modelling of creep behaviour of FCC metals
Comptes Rendus. Mécanique, Volume 349 (2021) no. 1, pp. 55-64.

In this paper, a new modelling is proposed to describe the viscoplastic behaviour of face-centred cubic (FCC) metals. Creep tests under various conditions were performed. The material chosen to test the model is Al-1050. The plastic deformation is controlled by intragranular diffusion when the test temperature exceeds 0.4T m . The developed model involves two state variables related to the microstructure: dislocation density and subgrain size. The grain size is assumed to be constant in the intermediate temperature range. Validation tests were proposed to justify the reliability of the developed model in various loading conditions.

Published online:
DOI: 10.5802/crmeca.76
Keywords: Creep, Subgrain, Strain hardening, Dynamic recovery, Viscoplasticity, Intragranular diffusion

Ahmed Maati 1, 2; El Hadj Ouakdi 1; Laurent Tabourot 3; Pascale Balland 3

1 Laboratory of Physics and Mechanics of Metallic Materials, Setif 1 University, Setif 19000, Algeria
2 Mechanics Laboratory, Department of Mechanics, Amar Telidji University, Laghouat 03000, Algeria
3 SYMME Laboratory, Univ. Savoie Mont Blanc, FR-74000 Annecy, France
License: CC-BY 4.0
Copyrights: The authors retain unrestricted copyrights and publishing rights
     author = {Ahmed Maati and El Hadj Ouakdi and Laurent Tabourot and Pascale Balland},
     title = {A contribution to the modelling of creep behaviour of {FCC} metals},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {55--64},
     publisher = {Acad\'emie des sciences, Paris},
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     year = {2021},
     doi = {10.5802/crmeca.76},
     language = {en},
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Ahmed Maati; El Hadj Ouakdi; Laurent Tabourot; Pascale Balland. A contribution to the modelling of creep behaviour of FCC metals. Comptes Rendus. Mécanique, Volume 349 (2021) no. 1, pp. 55-64. doi : 10.5802/crmeca.76.

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