Cycle deformation enabled controllable mechanical polarity of bulk metallic glasses

Shang, Baoshuang; Guan, Ping

doi:10.1016/j.actamat.2021.117557

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…[20][21][22][23] Unlike plastic events, these anelastic rearrangements are reversible during the loading-unloading process. They play a vital role in influencing various mechanical properties of amorphous solids, including relaxation, [24,25] thermal cycling rejuvenation, [26] mechanical anisotropy, [27,28] and memory effect. [29,30] However, the understanding of the discrepancies and connections between anelastic and plastic events, as well as the key parameters governing the transition from anelasticity to plasticity, remains elusive.…”

Section: Introductionmentioning

confidence: 99%

Anelasticity to plasticity transition in a model two-dimensional amorphous solid

Shang 尚

2023

Chinese Phys. B

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Anelasticity, as an intrinsic property of amorphous solids, plays a significant role in understanding their relaxation and deformation mechanism. However, due to the lack of long-range order in amorphous solids, the structural origin of anelasticity and its distinction from plasticity remain elusive. In this work, using frozen matrix method, we study the transition from anelasticity to plasticity transition in a two-dimensional model glass. Three distinct mechanical behaviours, namely elasticity, anelasticity, and plasticity, are identified with control parameters in the amorphous solid. Through the study of finite size effects on these mechanical behaviors, it is revealed that anelasticity can be distinguished from plasticity. Anelasticity serves as an intrinsic bridge connecting the elasticity and plasticity of amorphous solids. Additionally, it is observed that anelastic events are localized, while plastic events are subextensive. The transition from anelasticity to plasticity is found to resemble the entanglement of long-range interactions between element excitations. This study sheds light on the fundamental nature of anelasticity as a key property of element excitations in amorphous solids.

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Section: Introductionmentioning

confidence: 99%

Anelasticity to plasticity transition in a model two-dimensional amorphous solid

Shang 尚

2023

Chinese Phys. B

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“…Bulk metallic glass (BMG) is a solid alloy characterized by long-range disorder and short-range order, formed through rapid cooling of the molten alloy. BMGs exhibit exceptional mechanical, physical, and chemical properties due to the absence of common defects found in crystalline alloys, such as dislocations, crystal boundaries, and segregation [1][2][3][4][5][6]. Zr-based bulk metallic glass (Zr-BMG) possesses remarkable glass-forming ability and excellent attributes such as high strength, hardness, wear resistance, and corrosion resistance, thereby garnering significant attention.…”

Section: Introductionmentioning

confidence: 99%

Interface Characteristics of Tungsten-Particle-Reinforced Zr-Based Bulk-Metallic-Glass Composites with Different Tungsten Particle Sizes

Jin

Chi

et al. 2023

Materials

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This study investigated the interfacial characteristics of tungsten-particle-reinforced Zr-based bulk-metallic-glass composites (Wp/Zr-BMGs) with varying tungsten-particle sizes. To this end, Wp/Zr-BMGs with three different Wp sizes were fabricated using spark plasma sintering. Subsequently, the microstructures and interfacial structures of the Wp/Zr-BMGs were extensively examined, and the mechanical properties of the microzone at the Wp/Zr-BMG interface were evaluated using a nanoindentation method. The results revealed that the interfaces of Wp/Zr-BMGs, irrespective of the Wp size, exhibited dissolution-diffusion characteristics. Moreover, the thickness of the interface diffusion layer was positively correlated to the size of Wp. The addition of Wp enhanced the elastic modulus and hardness of Zr-BMGs at the interface, as these effects are inversely related to the Wp size. Furthermore, this study established a relationship between the interfacial mechanical properties and the interfacial characteristics of particle-reinforced bulk-metallic-glass composites. Thus, this study can serve as a guide for future research in the field of Wp/Zr-BMGs and similar particle-reinforced composites.

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Shear-banding dynamic and self-repair mechanism of CuZr metallic glass subjected to cyclic nanoindentation: Experiment and molecular dynamic simulation

Wang,

Yu,

Lai

et al. 2025

Applied Surface Science

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Cycle deformation enabled controllable mechanical polarity of bulk metallic glasses

Cited by 7 publications

References 40 publications

Anelasticity to plasticity transition in a model two-dimensional amorphous solid

Anelasticity to plasticity transition in a model two-dimensional amorphous solid

Interface Characteristics of Tungsten-Particle-Reinforced Zr-Based Bulk-Metallic-Glass Composites with Different Tungsten Particle Sizes

Shear-banding dynamic and self-repair mechanism of CuZr metallic glass subjected to cyclic nanoindentation: Experiment and molecular dynamic simulation

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