Significant Mechanical Softening of an Al-Y-Ni-Co Metallic Glass on Cold and Hot Rolling

Zolotorevsky, Vadim S.; Базлов, А. И.; Igrevskaya, A. G.; Аронин, А. С.; Abrosimova, G. E.; Louzguine-Luzgin, Dmitri V.

doi:10.1007/s11837-019-03430-x

Cited by 6 publications

(1 citation statement)

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“…Recently, many investigations have been conducted to mitigate the brittle behavior of MGs through the formation and interaction of multiple shear bands in the microstructure [11][12][13][14]. Although, a single shear band changes to a crack due to the severe strain localization, the multiple shear banding extends plastic deformation in the bulk of specimen [15][16][17][18]. Ebner et al [19] indicated that the high pressure torsion (HPT) induced the extra shear strains in the amorphous structure, leading to improvement of plastic defamation.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Plastic Deformation in CuZr Metallic Glasses Subjected to the Rolling Process

Sivaraman

Altalbawy

Wais³

et al. 2023

Advances in Materials Science and Engineering

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Using the rolling process, it is possible to induce multiple shear bands in the microstructure of metallic glasses (MGs) and improve the overall plasticity in the subsequent mechanical loadings. Hence, it is crucial to understand the mechanism of shear banding and plastic deformation under the rolling process. In this work, molecular dynamics (MD) simulation was applied to evaluate the formation and generation of shear bands in a CuZr MG under cold- and hot-rolling processes. Based on the results, it is found that the shear bands are formed with secondary branches in the cold rolling, while the shear events are scattered in the bulk of material in the hot rolling. Considering Voronoi analysis, it is revealed that the hot rolling is accompanied by the recovery of crystalline-like clusters provided that rolling process continues for subsequent passes. On the other hand, the cold-rolled sample shows a stable behavior in the evolution of crystalline-like clusters; however, the population of main icosahedral polyhedrons decreases in the system.

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