Results 11 to 20 of about 5,266 (303)
Modelling the Shear Banding in Gradient Nano-Grained Metals [PDF]
Nanomaterials, 2021 Extensive experiments have shown that gradient nano-grained metals have outstanding synergy of strength and ductility. However, the deformation mechanisms of gradient metals are still not fully understood due to their complicated gradient microstructure.
Tianyu Chen, Jianjun Li
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Quantifying the Size-Dependent Shear Banding Behavior in High-Entropy Alloy-Based Nanolayered Glass [PDF]
NanomaterialsExtensive research has shown that nanolayered structures are capable of suppressing the shear banding in metallic glass in nanoindentation experiments. However, the specific mode and mechanism of the shear banding underneath the indenter remains unknown.
Kaiqing Dai +3 more
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The Modulation of Compositional Heterogeneity for Controlling Shear Banding in Co-P Metallic Nanoglasses [PDF]
NanomaterialsShear banding is much dependent on the glass–glass interfaces (GGIs) in metallic nanoglasses (NGs). Nevertheless, the current understanding of the glass phase of GGIs is not well established for controlling the shear banding in NGs.
Tian Li +3 more
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Enhancing the Resistance to Shear Instability in Cu/Zr Nanolaminates Through Amorphous Interfacial Layer [PDF]
NanomaterialsMetallic nanolaminates generally show ultra-high strength but low ductility due to their vulnerability to shear instability during deformation. Herein, we report the simultaneous enhancement in hardness (by 11.9%) and suppression of shear instability in ...
Feihu Chen, Feng Qin
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Influences of Initial Stresses on Formation of Shear Bands and Mechanical Properties in Binodal Decomposed Metallic Glass Composites [PDF]
NanomaterialsStructural heterogeneity is useful for improving the plasticity of metallic glasses (MGs) by blocking the propagation of shear bands (SBs). The introduction of a heterogeneous structure often introduces residual stresses, which significantly influences ...
Yongwei Wang, Guangping Zheng, Mo Li
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How to catch a shear band and explain plasticity of metallic glasses with continuum mechanics [PDF]
Nature CommunicationsCapturing a shear band in a metallic glass during its propagation experimentally is very challenging. Shear bands are very narrow but extend rapidly over macroscopic distances, therefore, characterization of large areas at high magnification and high ...
Oleksandr Glushko +4 more
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Shear-banding instabilities [PDF]
, 2010 Gradient-banding and vorticity-banding instabilities, as well as a shear-induced instability due to shear-gradient induced mass transport will be discussed. Various scenarios that underly these instabilities are addressed and simple constitutive relations that allow for a (semi-) quantitative analysis are proposed.
Dhont, J.K.G. +3 more
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Micromechanics of shear banding [PDF]
Mechanics of Materials, 1994 Abstract Shear-banding is one of many instabilities observed during the plastic flow of solids. It is a consequence of the dislocation mechanism which makes plastic flow fundamentally inhomogeneous, and is exacerbated by local adiabatic heating.
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Fluids, 2019 In this work, we examine the shear-banding flow in polymer-like micellar solutions with the generalized Bautista-Manero-Puig (BMP) model. The couplings between flow, structural parameters, and diffusion naturally arise in this model, derived from the ...
J. Paulo García-Sandoval +3 more
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Grain-subdivision-dominated microstructure evolution in shear bands at high rates
Materials Research Letters, 2020 Shear banding is an important deformation and failure mechanism in metallic systems, especially at high-rate straining. Dynamic recrystallization was often reported to account for the refined microstructure of shear bands but rarely confirmed using ...
Xiaolong Ma +4 more
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