Structural evolution under elastic cyclic loading in a Ti-based metallic glass

Wang, X.D.; Song, S.L.; Zhu, Zhengwang; Zhang, H.F.; Ren, Xuechong

doi:10.1016/j.jnoncrysol.2021.121263

Cited by 4 publications

(1 citation statement)

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“…The elastic loading was done to change the mechanical properties and investigate structural evolution of a Ti-based BMGs. It was reported that the relaxation enthalpy increases with increasing stress levels, indicating the increase of free volume contents [29]. Majid et al also studied the effects of rejuvenation on atomic-level stresses and nanoscale spatial heterogeneity of a Zr-based BMG and indicated that the increase in loading value leads to the structural disordering [30].…”

Section: Introductionmentioning

confidence: 99%

Rejuvenation-to-Relaxation Transition Induced by Elastostatic Compression and Its Effect on Deformation Behavior in a Zr-Based Bulk Metallic Glass

Cui

Luo

et al. 2022

Metals

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The effect of uniaxial elastostatic compression on the deformation behavior of the Zr41.2Ti13.8Cu12.5Ni10Be22.5 (Vit1) bulk metallic glass (BMG) was reported. The as-cast alloy was pre-compressed under various time (20, 40 and 60 h) at a preloading level of 87% of its yield strength. It was found that elastostatic compression can lead to structural rejuvenation or relaxation depending on the pre-compression time. Elastostatic compression, for 40 h, increased the free volume and improved the plasticity of the BMGs from 1.4% to 3.4%, but preloading for 60 h decreased the free volume and worsened the plasticity. In addition, the heterogeneous structure evolution during creep deformation has been analyzed by the Maxwell-Voigt model with two Kelvin units, revealing that more (less) defects with larger size are activated after elastostatic compression treatment for 40 h (60 h). This work sheds new light on the correlation between heterogeneous structure and plasticity/creep behaviors of Zr-based BMGs.

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Section: Introductionmentioning

confidence: 99%