About: Portevin–Le Chatelier effect

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The Portevin–Le Chatelier (PLC) effect describes a serrated stress–strain curve or jerky flow, which some materials exhibit as they undergo plastic deformation, specifically inhomogeneous deformation. This effect has been long associated with dynamic strain aging or the competition between diffusing solutes pinning dislocations and dislocations breaking free of this stoppage.

Attributes	Values
rdfs:label	Portevin-Le-Chatelier-Effekt (de) Effet Portevin-Le Chatelier (fr) Portevin–Le Chatelier effect (en)
rdfs:comment	Der Portevin-Le-Chatelier-Effekt (PLC-Effekt) wird auch als dynamische Reckalterung bezeichnet. Seine Entdeckung wird Albert Portevin und Henry Le Chatelier zugeschrieben. Manche Legierungen zeigen bei einer kontinuierlichen Belastung ein ruckeliges und ungleichmäßiges Verformungsverhalten. Im Zugversuch zeigt sich beispielsweise eine über weite Abschnitte gezackte Spannungs-Dehnung-Kurve. Die plastische Deformation tritt ungleichmäßig verteilt über der Probe auf. Die Zonen erhöhter plastischer Deformation werden auch als Fließfiguren bezeichnet. (de) L'effet Portevin–Le Chatelier (ou effet PLC) est caractérisé par l'obtention d'une courbe contrainte-déformation « dentelée » lors de la déformation plastique d'un matériau. Il porte le nom d'Albert Portevin et de qui le décrivirent en 1923. (fr) The Portevin–Le Chatelier (PLC) effect describes a serrated stress–strain curve or jerky flow, which some materials exhibit as they undergo plastic deformation, specifically inhomogeneous deformation. This effect has been long associated with dynamic strain aging or the competition between diffusing solutes pinning dislocations and dislocations breaking free of this stoppage. (en)
foaf:depiction
dcterms:subject	Materials science
Wikipage page ID	2595792 (xsd:integer)
Wikipage revision ID	1085232523 (xsd:integer)
Link from a Wikipage to another Wikipage	Precipitation (chemistry) Lüders band Deformation (engineering) Deformation bands Dynamic strain aging Strain (materials science) Stress (mechanics) Félix Savart Diffusion Materials science Albert Portevin Stress–strain curve Plastic deformation Strain rate
sameAs	Portevin–Le Chatelier effect Portevin–Le Chatelier effect Portevin–Le Chatelier effect Portevin–Le Chatelier effect Portevin–Le Chatelier effect Portevin–Le Chatelier effect
dbp:wikiPageUsesTemplate	dbt:Refimprove dbt:Reflist dbt:Use_dmy_dates
thumbnail	wiki-commons:Special:FilePath/Critical_strain_vs_Temperture.jpg?width=300
auto	yes (en)
date	December 2009 (en)
has abstract	Der Portevin-Le-Chatelier-Effekt (PLC-Effekt) wird auch als dynamische Reckalterung bezeichnet. Seine Entdeckung wird Albert Portevin und Henry Le Chatelier zugeschrieben. Manche Legierungen zeigen bei einer kontinuierlichen Belastung ein ruckeliges und ungleichmäßiges Verformungsverhalten. Im Zugversuch zeigt sich beispielsweise eine über weite Abschnitte gezackte Spannungs-Dehnung-Kurve. Die plastische Deformation tritt ungleichmäßig verteilt über der Probe auf. Die Zonen erhöhter plastischer Deformation werden auch als Fließfiguren bezeichnet. (de) L'effet Portevin–Le Chatelier (ou effet PLC) est caractérisé par l'obtention d'une courbe contrainte-déformation « dentelée » lors de la déformation plastique d'un matériau. Il porte le nom d'Albert Portevin et de qui le décrivirent en 1923. (fr) The Portevin–Le Chatelier (PLC) effect describes a serrated stress–strain curve or jerky flow, which some materials exhibit as they undergo plastic deformation, specifically inhomogeneous deformation. This effect has been long associated with dynamic strain aging or the competition between diffusing solutes pinning dislocations and dislocations breaking free of this stoppage. The onset of the PLC effect occurs when the strain rate sensitivity becomes negative and inhomogeneous deformation starts. This effect also can appear on the specimen's surface and in bands of plastic deformation. This process starts at a so-called critical strain, which is the minimum strain needed for the onset of the serrations in the stress–strain curve. The critical strain is both temperature and strain rate dependent. The existence of a critical strain is attributed to better solute diffusivity due to the deformation created vacancies and increased mobile dislocation density. Both of these contribute to the instability in substitutional alloys, while interstitial alloys are only affected by the increase in mobile dislocation densities. (en)
prov:wasDerivedFrom	wikipedia-en:Portevin–Le_Chatelier_effect?oldid=1085232523&ns=0
page length (characters) of wiki page	13788 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Portevin–Le_Chatelier_effect
is Link from a Wikipage to another Wikipage of	Lüders band Dynamic strain aging Index of physics articles (P) Creep (deformation) PLC Dislocation avalanches Dislocation creep Félix Savart List of effects Albert Portevin Portevin-Le Chatelier effect Portevin-Le Chatlelier effect Portevin–Le Chatlelier effect
is Wikipage redirect of	Portevin-Le Chatelier effect Portevin-Le Chatlelier effect Portevin–Le Chatlelier effect
is foaf:primaryTopic of	wikipedia-en:Portevin–Le_Chatelier_effect

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