Atomistic Simulation of Nano-Rolling Process for Nanocrystalline Tungsten

Reddy, K. Vijay; Pal, Snehanshu

doi:10.1007/s11837-020-04337-8

Cited by 4 publications

(1 citation statement)

References 38 publications

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“…There have also been several MD studies on single crystals and polycrystals subjected to rolling: (a) the study of dynamic twin nucleation, and the weakening of texturing mechanisms in magnesium caused by the presence of compressive pressures 32 , (b) the evaluation of texture and defect evolution along with the stress distribution of Ni specimens 33 , (c) study the formation of shear bands in Cu-Zr metallic glass specimens 34 , (d) investigate the effect of temperature on the evolution of the structure and grain orientation in nanocrsytalline W 35 , (e) the study of the deformation mechanism and the orientation evolution of Ni specimens 36 , (f) deformation behavior investigation because of the effect of the roller temperature and the speed of Cu-Zr nanolaminates 37 , (g) the investigation of the mechanism of the creation and annihilation of stacking-fault tetrahedrons of a single crystal Ni during rolling 38 , and (h) the deformation mechanism study along with the structural evolution of single crystal Al and Cu specimens at room temperature (300 K) 39 . There have also been several fatigue studies using MD techniques to evaluate various dynamic parameters and structural stability.…”

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confidence: 99%

Atomistic simulation of rolling contact fatigue behavior of a face‐centered cubic material (nickel)

Goswami,

Pal,

Gupta

2023

Fatigue Fract Eng Mat Struct

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The atomic‐level fundamental understanding of the rolling contact fatigue (RCF) mechanism using molecular dynamics (MD) simulation is yet to be understood more clearly. In this paper, the atomistic behavior of the single‐crystal Ni is studied under dynamic rolling contact loading with the help of MD simulations at varying temperatures of the specimen. The deformed material is investigated using atomic strain analyses to evaluate the shear, volumetric strain distribution, and von Mises stress. Furthermore, dislocation and stacking–fault analyses are done to determine the deformation mechanism of the material with the oscillation cycles. Simulation studies infer that dislocation defects tend to increase with the temperature of the specimen logarithmically. The deformation majorly results in partial dislocations, indicating low stacking fault (SF) energy. The present work opens up a new field of study to understand the RCF mechanisms, which can provide the foundational work to understand other face‐centered cubic (FCC) materials.

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