Ratchetting in Cold-Drawn Pearlitic Steel Wires

Liang, Lun-Wei; Xiang, Liang; Wang, Yun-Jiang; Chen, Yan; Wang, Haiying; Dai, Lan-Hong

doi:10.1007/s11661-019-05359-x

Cited by 8 publications

(2 citation statements)

References 56 publications

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“…The same conclusion was drawn by Liang et al [31]. In addition to this, low temperature was adopted to the atomic model, because temperature affects the speed of dislocation evolution [54]. Choosing a temperature of 5 K could help us observe the process of dislocation nucleation and annihilation more clearly.…”

Section: Evolution Of Dislocations and Defect Meshesmentioning

confidence: 57%

Micromechanism of Plastic Accumulation and Damage Initiation in Bearing Steels under Cyclic Shear Deformation: A Molecular Dynamics Study

2022

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Fatigue failure usually occurs on the subsurface in rolling bearings due to multiaxial and non-proportional fatigue loadings between rolling elements. One of the main stress components is the alternating shear stress. This paper focuses on the micromechanism of plastic accumulation and damage initiation in bearing steels under cyclic shear deformation. The distribution of subsurface shear stress in bearings was firstly investigated by finite element simulation. An atomic model containing bcc-Fe and cementite phases was built by molecular dynamics (MD). Shear stress–strain characteristics were discussed to explore the mechanical properties of the atomic model. Ten alternating shear cycles were designed to explore the mechanism of cyclic plastic accumulation and damage initiation. Shear stress responses and evolutions of dislocaitons, defect meshes and high-strain atoms were discussed. The results show that cyclic softening occurs when the model is in the plastic stage. Severe cyclic shear deformation can accelerate plastic accumulation and result in an earlier shear slip of the cementite phase than that under monotonic shear deformation, which might be the initiation of microscopic damage in bearing steels.

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Section: Evolution Of Dislocations and Defect Meshesmentioning

confidence: 57%

Micromechanism of Plastic Accumulation and Damage Initiation in Bearing Steels under Cyclic Shear Deformation: A Molecular Dynamics Study

2022

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“…The same conclusion was drawn by Liang et al 20 In addition to that, low temperature was adopted to the atomic model, because temperature affects the speed of dislocation evolution. 49 Choosing a temperature of 5K could help us observe the process of dislocation nucleation and annihilation more clearly. Fig.…”

Section: Evolution Of Dislocationsmentioning

confidence: 99%

Micromechanism of cumulative damage in bearing steels under Rolling Contact Fatigue

Sun¹,

Cao²

2020

Preprint

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Rolling Contact Fatigue (RCF) is harmful and inevitable to bearings and usually results in the initiation of subsurface damage. This paper focuses on the cumulative mechanism of subsurface damage in bearing steels arose from cementite during RCF. The distribution of subsurface shear stress in bearings was investigated by finite element simulations. A two-phase atomic model of bcc-Fe and cementite was built. Ten alternating shear load cycles were applied when the model was initially in the elastic, elastic-plastic and plastic stages, respectively. The results show that cyclic softening diversely occurs in all three types of stress responses, and the progress of plastic accumulation depends on the amplitude of cyclic load and cycles. Severe shear deformation eventually leads to the damage of the cementite phase, which might be the microscopic mechanism of the fatigue failure of bearing steels. The conclusions presented have general applicability to brittle inclusions in bearing steels.

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Microstructure Evolution and Its Effects on the Mechanical Behavior of Cold Drawn Pearlite Steel Wires for Bridge Cables

Zhao

Mao

Bao

et al. 2022

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Ratchetting in Cold-Drawn Pearlitic Steel Wires

Cited by 8 publications

References 56 publications

Micromechanism of Plastic Accumulation and Damage Initiation in Bearing Steels under Cyclic Shear Deformation: A Molecular Dynamics Study

Micromechanism of Plastic Accumulation and Damage Initiation in Bearing Steels under Cyclic Shear Deformation: A Molecular Dynamics Study

Micromechanism of cumulative damage in bearing steels under Rolling Contact Fatigue

Microstructure Evolution and Its Effects on the Mechanical Behavior of Cold Drawn Pearlite Steel Wires for Bridge Cables

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