Size-dependent plastic stability of Zr-based metallic glass

Wu, F. F.; Jiang, Shanhu; Zhao, Rui; Zhou, Qin; Zhang, G.A.; Wu, Xiaofeng

doi:10.1016/j.msea.2015.08.062

Cited by 21 publications

(2 citation statements)

References 67 publications

(93 reference statements)

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“…Different deformation behaviors of BMGs upon quasi-static and dynamic compressions at different strain rates and temperatures have been investigated (Sunny et al, 2008;Liu and Liu, 2011;Huang et al, 2012), these researches showed either positive or negative correlation between fracture stress and strain rate. In addition, the size effect of BMGs have been extensively studied by experimental analysis and molecular dynamics simulation under quasi-static biaxial loading condition (Huang et al, 2007;Wu et al, 2015;Zhang et al, 2016b;Wang et al, 2016;Yang et al, 2016). With a faster cooling rate, smaller BMG containing more free volume or shear transformation zones (STZs) will be conducive to the formation of shear bands and further enhance its plasticity under quasi-static compressions (Huang et al, 2007;Zhang et al, 2016b).…”

Section: Introductionmentioning

confidence: 99%

Influence of Defects to Zr65Cu18Ni7Al10 Bulk Metallic Glass Properties Under Dynamic Compression

2022

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The Zr65Cu18Ni7Al10 bulk metallic glass with smaller diameter exhibits higher fracture strength under dynamic compression, which is ascribed to concentration of flow defect. The density of shear bands in the sample surface will increase with decreasing of the diameter, whereas, average distance and width of tear ridges in the fracture surface will increase with larger diameter. In addition, the volume of shear transformation zone can be estimated, which presents a ductile-to-brittle transition with the change of diameter. The physical graph of shear transformation zone can be obtained from the experimental analysis.

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Section: Introductionmentioning

confidence: 99%

Influence of Defects to Zr65Cu18Ni7Al10 Bulk Metallic Glass Properties Under Dynamic Compression

2022

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“…For example, Wu et al controllably enlarged Ti content to liquid alloy, and β-Ti dendrites toughened TiZr-based MGC were successfully prepared in the lab. The mechanical tests to prepared MGC specimens indicated an improved plasticity and toughness of the MGC with respect to the original MG alloy [5-8].…”

Section: Introductionmentioning

confidence: 99%

Butt welding of TiZrMoCuBe MGC/TC4 titanium alloy using a pulsed Nd:YAG laser

Chen

Liu

et al. 2022

Science and Technology of Welding and Joining

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β-Ti dendrite toughened metal glass composite and TC4 titanium alloy were butt welded by a pulsed laser. Microstructures and mechanical properties of the welded joint were specially studied. Results show that microstructure in the fusion zone is uneven, and mainly consists of dendritical β-Ti grains (in nanometre or micron scales) and amorphous alloy background. Special chemical compositions of base materials, shocking effect from laser pulses and large cooling speed during welding directly restrain the development of crystal β-Ti grain in the fusion zone. Hardness in the fusion zone ranges from 500 HV to more than 600 HV. During tensile tests, all the welded joints fracture on TC4 titanium alloy base material side.

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Atomic Structure of Cu49Hf42Al9 Metallic Glass with High Glass-Forming Ability and Plasticity

Chou

Gao

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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Electron diffraction was used to study the local atomic structure of Cu 49 Hf 42 Al 9 metallic glasses (MGs). The amorphous nature of the MG was fully retained after the compression test. The partial radial distribution functions (PRDFs) of the MG structure obtained from the atomic model using reverse Monte Carlo and density functional theory optimization display that the peaks of the first nearest-neighbour distances for Cu-Cu, Hf-Cu and Hf-Hf atomic pairs were located at 2.56 Å, 2.78 Å and 3.23 Å, respectively. The wide distribution of PRDF for Hf-Hf atomic pair explained the high plasticity of the material.

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Size-dependent plastic stability of Zr-based metallic glass

Cited by 21 publications

References 67 publications

Influence of Defects to Zr65Cu18Ni7Al10 Bulk Metallic Glass Properties Under Dynamic Compression

Influence of Defects to Zr65Cu18Ni7Al10 Bulk Metallic Glass Properties Under Dynamic Compression

Butt welding of TiZrMoCuBe MGC/TC4 titanium alloy using a pulsed Nd:YAG laser

Atomic Structure of Cu49Hf42Al9 Metallic Glass with High Glass-Forming Ability and Plasticity

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