The phenomenological and physical constitutive analysis of hot flow behavior of Al/Cu bimetal composite

Shayanpoor, A. A.; Ashtiani, H. R. Rezaei

doi:10.1007/s00339-022-05769-6

Cited by 5 publications

(1 citation statement)

References 41 publications

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“…Subsequently, the constitutive model for the peak stress can be approximated as follows: (10) As previously reported, the parameters (Q n, α and ln A) exhibit nonlinear changes with increasing strain [45,46]. To accurately replicate the hot deformation behavior across the entire deformation range, the material constants are estimated by using the similar method in Figure 7.…”

Section: Constitutive Model Of Hot Tensile Behavior 331 Arrhenius Phe...mentioning

confidence: 99%

Analysis of Hot Tensile Fracture and Flow Behaviors of Inconel 625 Superalloy

Pan,

Chen,

Ning

2024

Materials

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In this work, Inconel 625 alloy is explored regarding high-temperature tensile deformation and fracture behaviors at a strain rate of 0.005–0.01 s−1 under a deformation temperature ranging from 700–800 °C. The subsequent analysis focuses on the impact of deformation parameters on flow and fracture characteristics. The fractured surface reveals that ductile fracture is dominated by the nucleation, growth, and coalescence of microvoids as the primary failure mechanisms. The elevated deformation temperature and reduced strain rate stimulate the level of dynamically recrystallized (DRX) structures, resulting in intergranular fractures. The Arrhenius model and the particle swarm optimization-artificial neural network (PSO-ANN) model are developed to predict the hot tensile behavior of the superalloy. It indicates that the PSO-ANN model exhibits a correlation coefficient (R) as high as 0.9967, surpassing the corresponding coefficient of 0.9344 for the Arrhenius model. Furthermore, the relative absolute error of 9.13% (Arrhenius) and 1.85% (PSO-ANN model) are recorded. The developed PSO-ANN model accurately characterizes the flow features of the Inconel 625 superalloy with high precision and reliability.

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Section: Constitutive Model Of Hot Tensile Behavior 331 Arrhenius Phe...mentioning

confidence: 99%

Analysis of Hot Tensile Fracture and Flow Behaviors of Inconel 625 Superalloy

Pan,

Chen,

Ning

2024

Materials

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Comparisons of phenomenological and physically based constitutive models for Ti–6Al–2Zr–2Sn–3Mo–1.5Cr–2Nb alloy

Pak,

Sim,

et al. 2023

Appl. Phys. A

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Dislocation-based mechanical responses and deformation mechanisms of Al/Cu heterointerfaces: A computational study via molecular dynamics simulations

Gao,

Li,

Ren

et al. 2023

Mod. Phys. Lett. B

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Layered metal composites have been widely used in various industries fields because of their excellent properties and are responsible for mechanical behavior of materials. This paper focuses on analyzing the deformation mechanism of the (110) interface under different loading states by MD. The results show that there are two yield points in the stress–strain curve under both Z- and Y-axis loading states. The first yield is the nucleation of dislocations at the interface, meantime the slip of dislocations and the extension of stacking faults begin at the Al layer. The second one, the dislocation passes through the interface, nucleates and emits toward the Cu layer at the interface, leading to a stress mutation. It is worth noting that during the stable rheological stage, the deformation mechanisms vary under different loading directions. Under Y-axis tensile loading, the phase transformation of FCC–HCP is present due to the interaction of dislocation movement and stacking fault. On the contrary, there are two twin paths A and B, improving the strength, during Z-axis compression loading. For other loading modes, there are three zones, namely the elastic stage, the release of energy, and strain hardening and dynamic softening. The interface plays the role of nucleation, annihilation and penetration of dislocations, and this interface-dislocation mechanism is reflected in the whole stage of plastic deformation. The results have an insight into the design and control in heterointerface.

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The phenomenological and physical constitutive analysis of hot flow behavior of Al/Cu bimetal composite

Cited by 5 publications

References 41 publications

Analysis of Hot Tensile Fracture and Flow Behaviors of Inconel 625 Superalloy

Analysis of Hot Tensile Fracture and Flow Behaviors of Inconel 625 Superalloy

Comparisons of phenomenological and physically based constitutive models for Ti–6Al–2Zr–2Sn–3Mo–1.5Cr–2Nb alloy

Dislocation-based mechanical responses and deformation mechanisms of Al/Cu heterointerfaces: A computational study via molecular dynamics simulations

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