Prismatic Dislocation Loops in Copper Revealed by X-Ray Topography
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This article is published in Materials Transactions Jim.The article was published on 1976-01-01 and is currently open access. It has received 9 citations till now. The article focuses on the topics: Dislocation & Copper.read more
Citations
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Formation of extended prismatic dislocation structures under indentation
TL;DR: In this paper, the formation of the prismatic dislocations loops is dominated by stress controlled cross slip events, with cross slip locations reflecting the symmetry of the indentation stress field.
Journal ArticleDOI
Contact mechanics of graphene-covered metal surfaces
TL;DR: In this article, the authors carried out molecular statics simulations of the indentation of bare and graphene-covered Pt (111) surfaces with smooth and rough indenters of radius 15 to 10 nm.
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Unraveling indentation-induced slip steps in austenitic stainless steel
TL;DR: In this article, the dislocation mediated plasticity on positively and negatively inclined slip planes during nanoindentation has been investigated, and it is shown that slip steps on positively inclined slip points form preferentially during the early stage as compared to the formation of slip step on negative inclination, which occurs during the later deformation stage due to the change in surface topography.
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Relaxed configuration of a row of punched prismatic dislocation loops
TL;DR: Dunand and Mortensen as discussed by the authors studied the problem of estimating the number of loops in a row of coaxial, circular prismatic dislocation loops in an isotropic crystal and gave a closed-form solution for the problem.
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Formation of prismatic dislocation loops during unloading in nanoindentation
TL;DR: In this paper, the formation of prismatic dislocation loops during nanoindentation of bcc iron is simulated with discrete dislocation plasticity, and it is not the loading phase but the unloading phase of the test which is found to be crucial for prismatic loop formation when indenting a (001) crystal surface.
References
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Journal ArticleDOI
Etch Pits at Dislocations in Copper
TL;DR: A modification of an etch discovered by Lovell and Wernick has been shown to be a reliable means of revealing dislocations as etch pits on (111) faces of copper crystals as mentioned in this paper.
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The spacing of prismatic dislocation loops
R. Bullough,R. C. Newman +1 more
TL;DR: In this paper, the stresses round a circular prismatic dislocation loop are determined and used to calculate the spacings between such loops in a row generated from a source of internal stress.
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X-ray topographic observation of dislocation multiplication by cross-slip in Cu crystals
TL;DR: In this article, the Borrmann transmission X-ray topography technique was used to study 99-999% copper crystals under increasing tensile stress at room temperature, and a model of the multiplication mechanism was proposed.
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X‐Ray Topographic Study of Tensile Deformation in Nearly Perfect Copper Crystals
F. W. Young,F. A. Sherrill +1 more
TL;DR: In this article, the authors used Borrmann x-ray topographs to identify the source and the generation mechanism of screw dislocations in 0.5×0.1 cm copper with an initial dislocation density of 50-5000 cm/cm3.
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Burgers Vector of Dislocations Generated by Small Stresses in Copper Crystals
F. W. Young,F. A. Sherrill +1 more
TL;DR: In an x-ray topography study of the deformation of copper, the dislocations which were generated during the beginning stage of deformation were determined by the external geometry of the crystal in addition to the usual requirements of the maximum resolved shear stress as discussed by the authors.