Embrittlement


Embrittlement

Embrittlement is a loss of ductility of a material, making it brittle. Various materials have different mechanisms of embrittlement.

* Hydrogen embrittlement is the effect of hydrogen absorption on some metals and alloys.

* Sulfide stress cracking is the embrittlement caused by absorption of hydrogen sulfide.

* Liquid metal embrittlement (LME) is the embrittlement caused by liquid metals.

* Metal-induced embrittlement (MIE) is the embrittlement caused by diffusion of atoms of metal, either solid or liquid, into the material.

* Neutron radiation causes embrittlement of some materials, neutron-induced swelling, and buildup of Wigner energy. This is a process especially important for neutron moderators and nuclear reactor vessels (see ductility).

* The primary embrittlement mechanism of plastics is gradual loss of plasticizers, usually by overheating or aging.

* The primary embrittlement mechanism of asphalt is by oxidation, which is most severe in warmer climates. Asphalt pavement embrittlement can lead to various forms of cracking patterns, including longitudinal, transverse, and block (hexogonal). Asphalt oxidation is related to polymer degradation, as these materials bear similarities in their chemical composition.

ee also

* Stress corrosion cracking


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Embrittlement — Embrittlement. См. хрупкость. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • embrittlement — noun a) The characteristic or process of being embrittled. hydrogen embrittlement of metals b) The loss of flexibility or elasticity of a material …   Wiktionary

  • embrittlement — trapumas statusas T sritis Standartizacija ir metrologija apibrėžtis Kietosios medžiagos savybė dužti, lūžti. atitikmenys: angl. brittleness; embrittlement; fragility; shortness vok. Brüchigkeit, f; Sprödigkeit, f; Zerbrechlichkeit, f rus.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • embrittlement — trapumas statusas T sritis Standartizacija ir metrologija apibrėžtis Medžiagos savybė suirti dėl įtempimo poveikio nepasireiškus deformacijai. atitikmenys: angl. brittleness; embrittlement; fragility; shortness vok. Brüchigkeit, f; Sprödigkeit,… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • embrittlement — trapumas statusas T sritis chemija apibrėžtis Kietosios medžiagos savybė dužti, lūžti be ryškios plastinės deformacijos. atitikmenys: angl. brittleness; embrittlement; fragility; shortness rus. ломкость; хрупкость …   Chemijos terminų aiškinamasis žodynas

  • embrittlement — A reduced toughness in plastic or metal caused by age, heat or rough use. Also see hydrogen embrittlement …   Dictionary of automotive terms

  • embrittlement — noun see embrittle …   New Collegiate Dictionary

  • embrittlement — /em brit l meuhnt/, n. the act or process of becoming brittle, as steel from exposure to certain environments or heat treatment or because of the presence of impurities. [1915 20; EMBRITTLE + MENT] * * * …   Universalium

  • embrittlement — Смотри Охрупчивание …   Энциклопедический словарь по металлургии

  • embrittlement — Смотри Хрупкость …   Энциклопедический словарь по металлургии