Journal ArticleDOI
Grain size effects in the deformation of polycrystalline iron
R.A. Jago,Niels Hansen +1 more
TLDR
In this article, high purity polycrystalline iron of two different grain sizes was deformed at room temperature in tension to strains of up to 0.27, and the deformation mechanisms operative at selected strain levels identified by examining both the bulk microstructure by transmission electron microscopy and features developed on prepolished surfaces using optical microscopy.About:
This article is published in Acta Metallurgica.The article was published on 1986-09-01. It has received 63 citations till now. The article focuses on the topics: Grain boundary strengthening & Deformation mechanism.read more
Citations
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An investigation of surface nanocrystallization mechanism in Fe induced by surface mechanical attrition treatment
TL;DR: A grain refinement mechanism induced by plastic deformation during the SMA treatment in Fe was proposed in this article, which involves formation of dense dislocation walls (DDWs) and dislocation tangles (DTs) in original grains and in the refined cells under further straining.
Journal ArticleDOI
Six decades of the Hall–Petch effect – a survey of grain-size strengthening studies on pure metals
TL;DR: In this paper, the authors gather the grain-size strengthening data from the Hall-Petch studies on pure metals and use this aggregated data to calculate best estimates of these metals' Hall-petch parameters.
Journal ArticleDOI
New discoveries in deformed metals
TL;DR: In this article, the authors have shown that the microstructural evolution follows a universal pattern of grain subdivision from the macroscale to the nanometer scale, and that the similarity between the behavior of materials undergoing different deformation patterns forms the basis for future research and development encompassing traditional as well as new materials and processes.
Journal ArticleDOI
Tensile properties of in situ consolidated nanocrystalline Cu
S. Cheng,Evan Ma,Yinmin Wang,Laszlo J. Kecskes,Khaled Youssef,Carl C. Koch,U.P. Trociewitz,Ke Han +7 more
TL;DR: In this article, a ball milling-based in situ consolidation technique was used to produce fully dense nanocrystalline Cu samples centimeters in lateral dimensions and about one millimeter in thickness.
Journal ArticleDOI
Ultragrain refinement of plain low carbon steel by cold-rolling and annealing of martensite
TL;DR: In this article, the microstructural evolution during the process of cold-rolling and annealing of martensite starting structure can produce ultrafine grained structure in carbon steel.
References
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Journal ArticleDOI
The deformation of plastically non-homogeneous materials
TL;DR: The geometrically necessary dislocations as discussed by the authors were introduced to distinguish them from the statistically storages in pure crystals during straining and are responsible for the normal 3-stage hardening.
Strength of metals and alloys
TL;DR: The paper as discussed by the authors presents the papers given at a conference on the mechanical properties of metals and alloys, including hardening, anisotropy and texture, phase transformations, creep resistance, plasticity, deformations, microstructure, fracture properties, fatigue, wear resistance, temperature effects, stress analysis, and recrystallization.
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The plastic deformation of polycrystalline aggregates
TL;DR: For a number of metallic polycrystalline aggregates, it was shown experimentally that flow stress at constant strain is related to the grain diameter l by where [sgrave]0 and k are constants as discussed by the authors.
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The influence of grain boundaries on mechanical properties
TL;DR: The effect of interfaces on mechanical properties is considered in this paper, with emphasis on dislocation mechanisms and the atomic scale structure of boundaries, and Elastic and plastic compatibilities at boundaries are treated.