work hardening


work hardening

      in metallurgy, increase in hardness of a metal induced, deliberately or accidentally, by hammering, rolling, drawing, or other physical processes. Although the first few deformations imposed on metal by such treatment weaken it, its strength is increased by continued deformations. The reason for this seeming paradox lies in the crystalline structure of metal. As stresses are exerted, the crystals slip against each other; but, because of the complexity of the crystal structure, the more such slips are multiplied, the more they tend to place obstacles in the way of further slippage, because the various dislocation lines crisscross each other. See also tempering.

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Universalium. 2010.

Look at other dictionaries:

  • Work hardening — Work hardening, also known as strain hardening or cold working, is the strengthening of a metal by plastic deformation. This strengthening occurs because of dislocation movements within the crystal structure of the material.[1] Any material with… …   Wikipedia

  • work-hardening — workˈ hardening noun • • • Main Entry: ↑work …   Useful english dictionary

  • work hardening — noun The repeated plastic deformation of a material, causing a permanent distortion of its crystal structure, and an increase in its strength Syn: strain hardening …   Wiktionary

  • work hardening — increase dislocation density in metals through straining a material with an applied stress; degree of hardening may be manipulated through recovery and recrystallization …   Mechanics glossary

  • work-hardening — /ˈwɜk hadnɪŋ/ (say werk hahdning) noun → strain hardening …   Australian English dictionary

  • work-hardening — noun Metallurgy toughen (a metal) as a result of cold working. → work harden …   English new terms dictionary

  • work hardening — Смотри Нагартовка …   Энциклопедический словарь по металлургии

  • work hardening — Смотри Наклеп …   Энциклопедический словарь по металлургии

  • work hardening value — Смотри показатель деформационного упрочнения …   Энциклопедический словарь по металлургии

  • cold (work) hardening — Смотри Нагартовка …   Энциклопедический словарь по металлургии


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