Modelling of the thermomechanical behaviour of FCC metals under various conditions

Maati, Ahmed; Ouakdi, E. H.; Tabourot, Laurent; Balland, Pascale; Demouche, Mourad

doi:10.3166/acsm.42.115-127

Cited by 1 publication

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“…where α 1 , α 2 , and α 3 are dimensionless constants. The microstructural parameters ρ and d vary significantly during plastic deformation and are closely dependant on strain rate and temperature [5]: Table 1. Numerical values of model constants [5]…”

Section: Presentation Of the Thermomechanical Model Under Tensile Testmentioning

confidence: 99%

“…As a reminder, the basic equations (2) to (9) have been developed and demonstrated in the previous publication [5]. In addition, the constants of the model were identified in this step (Table 1).…”

Section: Presentation Of the Thermomechanical Model Under Tensile Testmentioning

confidence: 99%

“…In this study, two internal state variables (dislocation density and subgrain size) under different loading conditions were investigated. It is important to note that the present article can be considered as an extension of a recently published study [5], the latter was devoted to modelling the thermomechanical behaviour of FCC metals (e.g. aluminium 1050A alloy) under tensile tests.…”

Section: Introductionmentioning

confidence: 99%

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A contribution to the modelling of creep behaviour of FCC metals

Maati¹,

Ouakdi²,

Tabourot³

et al. 2021

Comptes Rendus. Mécanique

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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.

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Section: Presentation Of the Thermomechanical Model Under Tensile Testmentioning

confidence: 99%

Section: Presentation Of the Thermomechanical Model Under Tensile Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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