Journal ArticleDOI
Punched‐Out Dislocation Rosettes in Low‐Dislocation‐Density Copper
TLDR
In this article, a column of prismatic dislocation half-loops of a diameter larger than 20 μ were easily produced in regular shape and they seemed much less mobile than independent dislocations under glide shear stress.Abstract:
Copper single crystals of extremely low dislocation density have been obtained through a thermal cyclic annealing. Ball indentation in the dislocation‐free area of (111) surface produced large dislocation rosettes, each arm extending in the 〈110〉 cystallographic orientations consisted of a row of prismatic dislocation half‐loops. Half‐loops of a diameter larger than 20 μ were easily produced in regular shape and they seemed much less mobile than independent dislocations under glide shear stress.read more
Citations
More filters
Journal ArticleDOI
Elastic, plastic, cracking aspects of the hardness of materials
TL;DR: The hardness properties of materials are tracked from early history until the present time as mentioned in this paper, with emphasis on the hardness test being a useful probe for determining the local elastic, plastic and cracking properties of single crystal, polycrystalline, polyphase or amorphous materials.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
References
More filters
Book
Advances in X-Ray Analysis
TL;DR: The proceedings of the 13th Annual Conference on Applications of X-Ray Analysis (Denver, Colorado, August 3-7, 1981) as mentioned in this paper were concerned with XRF detectors and XRF instrumentation.
Journal ArticleDOI
Effect of Thermal Cyclic Annealing on the Decrement of Dislocation Density in Copper Single Crystals
Journal ArticleDOI
Influence of Jog Concentration on the Conservative Motion of Dislocations in Copper
Pierre Petroff,Jack Washburn +1 more
TL;DR: In this article, the critical resolved shear stress necessary to move circular prismatic edge-dislocation loops along their glide cylinders was compared to the range of stresses within which various segments of the three-dimensional network began to move.
Related Papers (5)
On dislocation loss in thin film electron microscopy of polycrystalline copper
C. T. B. Foxon,J. G. Rider +1 more