- stress field of a dislocation
- 位错应力场
English-Chinese metallurgy dictionary. 2014.
stress field of a dislocation
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Stress field — A stress field is a region in a body for which the stress is defined at every point. Stress fields are widely used in fluid dynamics and materials science.Intuitively, one can picture the stress fields as the stress created by adding an extra… … Wikipedia
Dislocation — For the syntactic operation, see Dislocation (syntax). For the medical term, see Joint dislocation. In materials science, a dislocation is a crystallographic defect, or irregularity, within a crystal structure. The presence of dislocations… … Wikipedia
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John W. Cahn — John Cahn (1927 ) is an American Scientist and winner of the National Medal of Science in 1998. Since 1977, he has held a position at the National Institute of Standards and Technology. Cahn has had a profound influence on the course of materials … Wikipedia
solids, mechanics of — ▪ physics Introduction science concerned with the stressing (stress), deformation (deformation and flow), and failure of solid materials and structures. What, then, is a solid? Any material, fluid or solid, can support normal forces.… … Universalium
Grain boundary strengthening — (or Hall Petch strengthening) is a method of strengthening materials by changing their average crystallite (grain) size. It is based on the observation that grain boundaries impede dislocation movement and that the number of dislocations within a … Wikipedia
Strengthening mechanisms of materials — Methods have been devised to modify the yield strength, ductility, and toughness of both crystalline and amorphous materials. These strengthening mechanisms give engineers the ability to tailor the mechanical properties of materials to suit a… … Wikipedia
Solid solution strengthening — is a type of alloying that can be used to improve the strength of a pure metal. The technique works by adding atoms of one element (the alloying element) to the crystalline lattice another element (the base metal). The alloying element diffuses… … Wikipedia
materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… … Universalium
Pinning points — In a crystalline material, a dislocation is capable of traveling throughout the lattice when relatively small stresses are applied. This movement of dislocations results in the material plastically deforming. Pinning points in the material act to … Wikipedia
Cottrell atmosphere — In materials science, the concept of the Cottrell atmosphere was introduced by Cottrell and Bilby in 1949[1] to explain how dislocations are pinned in some metals by carbon or nitrogen interstitials. A carbon atom below a dislocation in iron,… … Wikipedia
