Incipient plasticity
WebDec 23, 2024 · In order to determine the mechanism that leads to the initiation of plastic deformation in nanoindented InP, we anticipated the doping-dependence of incipient … WebOct 15, 2024 · The maximum shear stress required to trigger dislocation nucleation is ~1/11 to 1/8 of the shear modulus, approaching the respective theoretical strength. The observed indentation-induced incipient plasticity is predominantly mediated by the {110}<111> slip system in the currently studied BCC-HEAs. 3
Incipient plasticity
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WebNov 1, 2024 · With instrumented nanoindentation, incipient plasticity of two as-cast BCC TiZrNbTa and TiZrNbTaMo high-entropy alloys (HEAs) are investigated in terms of pop-in events during loading, to... WebThe incipient plasticity indicates the nucleation or activation of defects in materials and enables us to study the intrinsic mechanical properties of materials. In this dissertation, instrumented indentation technique was employed to study the incipient plasticity of metals (bcc-Cr, fcc-Ni, fcc-Au) and a fcc-structured high entropy alloy (HEA) NiFeCoMnCr. The …
WebNov 30, 2024 · Abstract Small-scale mechanics of solute atom segregation and incipient plasticity in nanotwinned Ag containing trace concentrations of Cu were studied by using large-scale hybrid Monte Carlo and molecular-dynamic simulations. WebIn this paper we focus on incipient plasticity, the very initial stages of plastic activity, in an aluminum thin film subjected to nanoindentation. We investigate the mechanisms whereby dislocations are nucleated, their subsequent interactions, and the effects of indenter geometry and film crystallography.
WebWe found that the incipient plasticity of diamond should result from the propagation of the dislocations and the structural phase transitions from cubic diamond to lonsdaleite. The probable physical processes of incipient plasticity of diamond during nanoindentation were also suggested. WebJul 13, 2024 · The current work investigates the impact of grain boundaries on the incipient plasticity of small-scale deformations of fcc metals. For this purpose, the behavior of single and bi-crystal Au thin films during nanoindentation are studied, using large-scale atomistic simulations. Various symmetric 110 tilt GBs with a wide range of misorientation ...
WebFeb 7, 2014 · The scaling of Vickers hardness (Hv) in oxide glasses with varying network modifier/modifier ratio is manifested as either a positive or negative deviation from linearity with a maximum deviation at the ratio of about 1:1. In an earlier study [J. Kjeldsen et al., J. Non-Cryst. Solids 369, 61 (2013)], we observed a minimum of Hv in CaO/MgO sodium …
WebApr 29, 2024 · Incipient plasticity and deformation mechanisms in single-crystal Mg during spherical nanoindentation. Acta Mater. 61 , 2953–2965 (2013). Article CAS Google Scholar ttaggg repeat-binding factor 1WebFeb 25, 2024 · A fundamental understanding of the elastic-plastic deformation transition, in particular, incipient plasticity, has been a grand challenge in high-pressure and high-strain-rate environments, impeded largely by experimental limitations on … ttag flash hider testsWebJul 1, 2004 · We propose a nucleation theory-based analysis for incipient plasticity during nanoindentation and predict the statistical distribution of rate-dependent pop-in events for … ttagging with fluorescent dyesWebJul 17, 2005 · The current understanding of incipient plasticity during nanoindentation is that the displacement burst corresponds to the nucleation of at least one dislocation, which occurs primarily due to... ttagm2020 twitchWebDec 23, 2024 · Nanoindentation-induced incipient plasticity in initially dislocation-free crystal volume is reflected by the first discontinuity in the load-displacement (P-h) curve, which occurs when the indenter suddenly penetrates deeper into a material under a constant load. This effect, known as the pop-in, marks the onset of elastic-plastic transition. ttag motorcycle clubWebDec 7, 2024 · This article is concerned with incipient plasticity in an InP crystal studied by nanoindentation experiments and ab initio simulations. We consider dislocation-nucleation phenomena and... tt against copy of blWeb2.2.2 Transformation-induced plasticity. TRIP steels are a multiphase steel typically containing ferrite, retained austenite, and bainite and/or martensite, as shown in Figure … ttag business solutions