Journal ArticleDOI
Orowan strengthening and forest hardening superposition examined by dislocation dynamics simulations
TLDR
In this paper, the authors use a rule of mixtures model to characterize the individual and the superposed contributions of two major mechanisms of crystal plasticity, i.e., Orowan strengthening and forest hardening.About:
This article is published in Acta Materialia.The article was published on 2010-10-01. It has received 256 citations till now. The article focuses on the topics: Hardening (metallurgy) & Rule of mixtures.read more
Citations
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A model for the microstructure behaviour and strength evolution in lath martensite
TL;DR: In this article, a new model describing the microstructure and strength of lath martensite is introduced, where the lattice distortion energy within a lath being equal to the strain energy of the dislocation density at the lath boundaries.
Journal ArticleDOI
Microstructure-based modelling of isotropic and kinematic strain hardening in a precipitation-hardened aluminium alloy
TL;DR: In this paper, a physically-based model for strain hardening, using a modified version of the Kocks-Mecking-Estrin formalism, is presented for the precipitation states that exhibit precipitate bypassing.
Journal ArticleDOI
Grain size dependence of the strength of metals: The Hall–Petch effect does not scale as the inverse square root of grain size
TL;DR: The authors showed that the Hall-petch effect is not another size effect sui generis but is the same size effect as that observed in epitaxial thin film growth and in micromechanical testing of small specimens.
Journal ArticleDOI
About metastable cellular structure in additively manufactured austenitic stainless steels
Decheng Kong,Decheng Kong,Chaofang Dong,Shaolou Wei,Xiaoqing Ni,Liang Zhang,Ruixue Li,Li Wang,Cheng Man,Xiaogang Li +9 more
TL;DR: In this article, the authors review the most recent research momentum regarding the formation mechanisms (elemental segregation, dislocation cell and oxide inclusion), the kinetics of the size and morphology, the growth orientation and the thermodynamic stability of these cellular structures by taking AM austenitic stainless steel as an exemplary material.
Journal ArticleDOI
The influence of silicon in tempered martensite: Understanding the microstructure-properties relationship in 0.5-0.6 wt.% C steels
B. Kim,Elodie Boucard,Thomas Sourmail,D. San Martín,Nathalie Gey,Pedro E.J. Rivera-Díaz-del-Castillo +5 more
TL;DR: In this paper, the strengthening contributions in medium-carbon tempered martensite are revealed by using transmission electron microscopy and synchrotron radiation X-ray diffraction, the different microstructural features have been captured; these include precipitation, grain boundary, solid solution and dislocation forest strengthening.
References
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Book
Recrystallization and Related Annealing Phenomena
F.J. Humphreys,M. Hatherly +1 more
TL;DR: In this paper, the authors discuss the extent to which we are able to formulate quantitative, physically-based models which can be applied to metal-forming processes, and the subjects treated in this book are all active research areas and form a major part of at least four regular international conference series.
Journal ArticleDOI
A Statistical Theory of Solid Solution Hardening
TL;DR: The critical shear stress τc to move a dislocation through a random array of obstacles in the glide plane is calculated using a statistical theory and the theory provides a definite prescription how to combine the concentrations and interaction forces of obstacles of different kinds.
Journal ArticleDOI
Latent hardening in copper and aluminium single crystals
TL;DR: In this paper, the latent hardening ratios (LHRs) were measured for different values of primary shear strain in Stage 1, and for various latent systems, including copper and aluminium single crystals.
Book
Particle Strengthening of Metals and Alloys
TL;DR: The Critical Resolved Shear of Stress of Particle Hardened Materials - Particle Shearing: General Considerations as discussed by the authors The critical resolved shear of stress of particle hardened materials.