Paper Title:
Physical Modeling on Recrystallization of Austenite in Steels in Thermo-Mechanical Processing
  Abstract

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.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
1953-1956
DOI
10.4028/www.scientific.net/MSF.561-565.1953
Citation
X.T. Wang, Z.L. Yu, T. Siwecki, G. Engberg, Z. Q. Sun, "Physical Modeling on Recrystallization of Austenite in Steels in Thermo-Mechanical Processing", Materials Science Forum, Vols. 561-565, pp. 1953-1956, 2007
Online since
October 2007
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$32.00
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