Rheological Behavior of Pure Molybdenum at High Temperature Considering Strain Compensation

Hu, Ping; Cheng, Qiansheng; Li, Shilei; Xing, Hai-Rui; Han, Jia-Yu; Ge, Songwei; Hua, Xing-Jiang; Hu, Bo-Liang; Wang, Kuaishe; Li, Laiping

doi:10.1002/adem.202000661

Cited by 4 publications

(2 citation statements)

References 38 publications

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“…Additionally, the ideal boundary conditions that could be considered are portrayed in Figure 2. As known, temperature and strain rate are very sensitive to rheological behavior; hence, the previously established constitutive equation [31] was taken into account to describe the formation of pure molybdenum in this study. The updated Lagrangian method was employed to address the process of large plastic deformation.…”

Section: Finite Element Modelmentioning

confidence: 99%

Finite Element Analysis of Large Plastic Deformation Process of Pure Molybdenum Plate during Hot Rolling

Han

Cheng

et al. 2023

Metals

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The rare molybdenum resources are being increasingly used in heavy industries. In this study, the common unidirectional and cross hot rolling operations, for pure molybdenum plates, were numerically simulated by using MSC. Marc software. An elastic–plastic finite element model was employed, together with the updated Lagrange method, to predict stress and strain fields in the workpiece. The results showed that there was a typical three-dimensional additional compressive stress (σy > σz > σx) in the deformation zone, while strain could be divided into uniaxial compressive strain and biaxial tensile strain (εy > εx > εz). Tensile stress σx increased with the accumulation of reduction and the decrease in friction coefficient at the edge of the width spread. More importantly, the interlaced deformation caused by cross-commutations, which were helpful in repairing the severe anisotropy created by unidirectional hot rolling. The evolution of the temperature field of pure molybdenum plate was investigated. The surface quenching depth of the pure molybdenum plate was about 1/6 H under different initial temperatures and reductions. In addition, the fundamental reason for the nonuniform distribution of stress and strain fields was the joint influence of rolling stress, contact friction, and external resistance. By comparing the theoretical simulation value of the model with the experimental verification data, we found that the model was aligning well with the actual engineering.

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Section: Finite Element Modelmentioning

confidence: 99%

Finite Element Analysis of Large Plastic Deformation Process of Pure Molybdenum Plate during Hot Rolling

Han

Cheng

et al. 2023

Metals

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show abstract

“…In addition, the ideal boundary conditions that can be considered are portrayed in Fig. 3 constitutive equation [25] established previously was taken into account to describe the formation of pure molybdenum in this paper. Updated Lagrangian method was employed to address the process of large plastic deformation.…”

Section: Finite Element Modelmentioning

confidence: 99%

Finite Element Analysis of Large Plastic Deformation Process of Pure Molybdenum Plate During Hot Rolling

Peng

Cheng

Xing

et al. 2021

Preprint

Self Cite

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Rare molybdenum resources have been increasingly involved in heavy industries. In this paper, the common unidirectional and cross hot rolling operations, for pure molybdenum plate, are numerically simulated by using MSC. Marc software. An elastic-plastic finite element model is employed together with updated Lagrange method to predict stress and strain fields in the work-piece. The results showed that there was a typical three-dimensional additional compressive stress ( σy > σx > σz ) in deformation zone, while strain could be divided into uniaxial compressive strain and biaxial tensile strain ( Ey > Ex > Ez ). Tensile stress σx increased with the accumulation of reduction and the decrease of friction coefficient at the edge of width spread. More importantly, the interlaced deformation caused by cross commutation was helpful to repair the severe anisotropy created by unidirectional hot rolling. By comparing the theoretical verification of rolling forces and the measured temperatures with the simulated values, eventually, it is demonstrated that the model is aligning well with the actual engineering.

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Multi-objective, multi-constraint high-throughput design, synthesis, and characterization of tungsten-containing refractory multi-principal element alloys

Acemi,

Vela,

Norris

et al. 2024

Acta Materialia

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Rheological Behavior of Pure Molybdenum at High Temperature Considering Strain Compensation

Cited by 4 publications

References 38 publications

Finite Element Analysis of Large Plastic Deformation Process of Pure Molybdenum Plate during Hot Rolling

Finite Element Analysis of Large Plastic Deformation Process of Pure Molybdenum Plate during Hot Rolling

Finite Element Analysis of Large Plastic Deformation Process of Pure Molybdenum Plate During Hot Rolling

Multi-objective, multi-constraint high-throughput design, synthesis, and characterization of tungsten-containing refractory multi-principal element alloys

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