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Modified Kocks–Mecking–Estrin Model to Account Nonlinear Strain Hardening
Krishnaswamy Hariharan, , Frederic Barlat
Published in Springer Boston
2019
Volume: 50
   
Issue: 2
Pages: 513 - 517
Abstract

The dislocation density-based model after Kocks–Mecking–Estrin (KME) is widely used to characterize the thermally activated plastic deformation and dislocation kinetics. According to the model, the slope of the stress–strain curve decreases linearly with stress, which contradicts the experimental observation. In the current study, the evolution of dislocation density in the model is generalized to account for the nonlinearity of the slope. © 2018, The Minerals, Metals & Materials Society and ASM International.

About the journal
JournalData powered by TypesetMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
PublisherData powered by TypesetSpringer Boston
ISSN10735623
Open AccessNo
Concepts (8)
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    Condensed matter physics
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    MATERIALS SCIENCE
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    Metallurgical engineering
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    Dislocation densities
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    NONLINEAR STRAIN HARDENING
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    STRAIN CURVES
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    THERMALLY ACTIVATED
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    Strain hardening