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论文类型：期刊论文

发表时间：2010-09-01

发表刊物：APPLIED MATHEMATICAL MODELLING

收录刊物：SCIE、EI、Scopus

卷号：34

期号：9

页面范围：2644-2653

ISSN号：0307-904X

关键字：GCr15 steel; Microstructure evolution; Hot rod rolling; Recrystallization; Austenite grain size

摘要：In this paper, four 3-D finite element models are developed to simulate the whole rod rolling process of GCr15 steel. The distribution and evolution of different field-variables, such as effective strain, effective strain rate and temperature, are obtained. Based on the simulated results and the microstructure evolution models of the steel, the paper designs a FORTRAN program to predict the evolution of recrystallization behavior and austenite grain size in rolled piece during the rolling. The surface temperatures of rolled piece calculated by FEM agree well with measured values. Comparison between calculated values and measured ones of grain size shows the validity of the program. (C) 2009 Elsevier Inc. All rights reserved.