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Physical Modeling on Recrystallization of Austenite in Steels in Thermo-mechanical Processing
Högskolan Dalarna, Akademin Industri och samhälle, Materialvetenskap.
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2007 (Engelska)Ingår i: Materials Science Forum, ISSN 1662-9752, Vol. 561-565, s. 1953-1956Artikel i tidskrift (Övrigt vetenskapligt) Published
Abstract [en]

A physical model for austenite recrystallization of steel concerning TMCP is developed. Dislocation density plays a key role as recrystallization driving force. The dislocation density change is a result of competition between dislocation generation and dynamic recovery. Recrystallization is described as a nucleation-growth process. An abnormal subgrain growth mechanism is introduced for nucleation. A few subgrains fulfilling abnormal growth conditions will stand out and become nuclei of recrystallization. The recrystallized grain grows to the deformed materials driven by the stored energy. Oswald ripening occurs for grains surrounded by recrystallized grains. The models were verified by laboratory simulation results for selected austenite stainless steels. It showed good agreement between predicted and experimental results.

Ort, förlag, år, upplaga, sidor
Switzerland: Trans Tech Publications , 2007. Vol. 561-565, s. 1953-1956
Nyckelord [en]
modeling, microstructure, recrystallization, deformation, TMCP
Identifikatorer
URN: urn:nbn:se:du-3073OAI: oai:dalea.du.se:3073DiVA, id: diva2:519901
Tillgänglig från: 2008-01-25 Skapad: 2008-01-25 Senast uppdaterad: 2012-04-24Bibliografiskt granskad

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