Microstructural evolution during annealing and rolling Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glass

Zhang, P.N.; Li, J.F.; Hu, Yong; Zhou, Yaohe

doi:10.1016/j.msea.2008.09.004

Cited by 14 publications

(2 citation statements)

References 34 publications

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“…Deformation above the critical value results in phase separation and nanocrystallization, which reduce the thermal stability of the metallic glass. The similar phenomena were also observed in other metallic glasses [9][10][11].…”

Section: Introductionsupporting

confidence: 88%

Effect of Cold Rolling on Thermal Stability of Zr 55 Al10Ni5Cu30 Bulk Metallic Glass

2011

AMR

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The effect of cold rolling on thermal stability of bulk Zr55Al10Ni5Cu30metallic glass at room temperature had been investigated by means of X-ray diffractometer, high-resolution transmission electron microscope and differential scanning calorimeter. A number of the cold rolling processes were carried out to obtain different thickness reduction in specimens with the same original size. The XRD patterns of cold rolled specimens with thickness reduction up to 95% showed no clear difference with that of completely amorphous specimens. The relationship of the deformation with the thermal parameters of cold rolled specimen indicates that with the increase of thickness reduction, the glass transition temperature decreases obviously and the crystallization onset temperature and peak temperature decreases slightly. At the same time, the enthalpy of crystallization peak keeps almost constant during rolling. These results have revealed that cold rolling deformation has an apparently effect on the glass transition process but slightly effect on the crystallization process of Zr55Al10Ni5Cu30BMG.

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Section: Introductionsupporting

confidence: 88%

Effect of Cold Rolling on Thermal Stability of Zr 55 Al10Ni5Cu30 Bulk Metallic Glass

2011

AMR

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“…Improving the mechanical properties of bulk metallic glasses (BMGs), especially their plastic deformation capability, has been a major goal of many research groups in the last two decades. Conventional methods to enhance the plasticity, which makes fracture of these BMG specimens more predictable, are given by, eg, shot peening, mechanical imprinting, cold rolling, or introducing crystalline microparticles . While most of these treatments also affect the surface morphology of the material, which is possibly a drawback for specific technical applications, there is a very recent approach to influence the mechanical properties of bulk amorphous alloys by thermal cycling between room temperature and cryogenic temperatures prior to mechanical testing.…”

Section: Introductionmentioning

confidence: 99%

Cyclic cryogenic pretreatments influencing the mechanical properties of a bulk glassy Zr‐based alloy

Grell

Dabrock

Kerscher

2018

Fatigue Fract Eng Mat Struct

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In this study, cryogenic thermal cycling was applied to bulk glassy Zr52.5Cu17.9Al10Ni14.6Ti5 (Vitreloy 105) bending samples. After that, significantly improved plasticity and better fatigue properties at three‐point bending as well as higher impact toughness were measured in dependence of the duration and the cooling rate of the thermal cycling process. This improved material behaviour is caused by reinforced shear banding, visible in scanning electron microscopy at the side faces of the specimens after fracture. A comprehensive analysis of the fracture surfaces of both quasi‐static and cyclic bent specimens revealed intense crack propagation along major shear bands and increased fatigue fracture regions, respectively. It is supposed that there is a structural rejuvenation due to the local variations of the thermal expansion coefficients within the multicomponent alloy affecting the mechanical properties.

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Bulk Metallic Glasses as Structural Materials: A Review

Kruzic

2016

Adv Eng Mater

234

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Bulk metallic glasses (BMGs) can exhibit excellent combinations of strength and fracture toughness that cannot be achieved by traditional metals, making them attractive for load bearing, mechanical engineering applications. Furthermore, recent research on BMGs has shown that many early perceived shortcomings, such as apparent brittleness or poor fatigue resistance, are not as big of a problem as once thought. The purpose of this paper is to review some of the unique mechanical characteristics of BMGs along with some of the strategies that may be used to improve or exploit their characteristics so that BMGs may be used as structural materials in engineering applications.

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Microstructural evolution during annealing and rolling Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glass

Cited by 14 publications

References 34 publications

Effect of Cold Rolling on Thermal Stability of Zr<sub> 55</sub> Al<sub>10</sub>Ni<sub>5</sub>Cu<sub>30</sub> Bulk Metallic Glass

Effect of Cold Rolling on Thermal Stability of Zr<sub> 55</sub> Al<sub>10</sub>Ni<sub>5</sub>Cu<sub>30</sub> Bulk Metallic Glass

Cyclic cryogenic pretreatments influencing the mechanical properties of a bulk glassy Zr‐based alloy

Bulk Metallic Glasses as Structural Materials: A Review

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