Results 31 to 40 of about 112,378 (319)
Analysis of an improved Nishihara creep model considering plastic strain accumulation
Frontiers in Materials, 2023 Rock-engineering structures, particularly subway excavation rock-engineering structures, are subjected to the long-term effects of external loading that may gradually damage and cause creep and severe plastic deformations or even progressive failure. The traditional Nishihara creep model cannot accurately describe the accelerated creep stage of rock ...
Yang Cheng, Liangliang Zhang
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Numerical simulation of fatigue crack growth based on accumulated plastic strain
Theoretical and Applied Fracture Mechanics, 2020 Abstract Fatigue crack growth (FCG) is simulated here by node release, which is made when the accumulated plastic strain reaches a critical value. The numerical procedure is very robust, showing a very fast stabilization and independence relatively to the load considered for node release. A critical accumulated plastic strain of 110% was obtained for
Borges, M. F. M. +2 more
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, 2021 Severe plastic deformation (SPD) with strong shear component is required to promote both grain refinement and texture randomization. When Asymmetric rolling (AR) is applied as asymmetric accumulative roll bonding (AARB), it enables the production of ...
R. P. Godoi +6 more
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Simulation of the Accumulative Roll-Bonding process through warm torsion test
Journal of Materials Research and Technology, 2018 The objective of this work was simulating the process of severe plastic deformation, specifically the Accumulative Roll-Bonding process (ARB) in low carbon steel, by warm torsion test, using the typical ARB process parameters.
Lumena Glória de Souza Nunes +1 more
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Accommodation of large plastic strains and defect accumulation in nanocrystalline Ni grains [PDF]
Journal of Materials Research, 2007 A transmission electron microscopy (TEM) study has been carried out to uncover how dislocations and twins accommodate large plastic strains and accumulate in very small nanocrystalline Ni grains during low-temperature deformation. We illustrate dislocation patterns that suggest preferential deformation and nonuniform defect storage inside the ...
X.L. Wu, E. Ma
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The influence of new severe plastic deformation on microstructure, mechanical, and corrosion properties of Mg-0.8Mn-0.5Ca alloy [PDF]
Journal of Mining and Metallurgy. Section B: Metallurgy, 2023 In this research, the effect of accumulative extrusion bonding (AEB) on the microstructure and mechanical properties of Mg-0.8Mn-0.5Ca biocompatible alloy was investigated.
Khani M. +3 more
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Failure of discontinuous railhead edges due to plastic strain accumulation
Engineering Failure Analysis, 2014 Abstract Railhead is perhaps the highest stressed civil infrastructure due to the passage of heavily loaded wheels through a very small contact patch. The stresses at the contact patch cause yielding of the railhead material and wear. Many theories exist for the prediction of these mechanisms of continuous rails; this process in the discontinuous ...
Thaminda Bandula-Heva +1 more
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Yantu gongcheng xuebao, 2023 As the foundation of cold region projects and the supporting wall of artificial freezing projects, the frozen soil often bears the disturbance of dynamic loads.
ZHANG Binlong 1, 2, WANG Dayan 2, MA Wei 2, LEI Lele 3, ZHOU Zhiwei 2
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Metals, 2023 Shape memory alloys (SMAs) are types of materials that can restore their original shape upon severe or quasi-plastic deformation, being exposed to specific external stimuli, including heating, electric current, magnetic field, etc. They are a category of
Mahmoud Ebrahimi +5 more
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Mechanical Behavior of an Ultrafine/Nano Grained Magnesium Alloy [PDF]
Journal of Ultrafine Grained and Nanostructured Materials, 2017 The application of magnesium alloys is greatly limited because of their relatively low strength and ductility. An effective way to improve the mechanical properties of magnesium alloy is to refine the grains.
Seyed Mahmood Fatemi +1 more
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