DISCREPANCIES IN THE REGRESSION MODELLING OF RECRYSTALLIZATION RATE AS USING THE DATA FROM PHYSICAL SIMULATION TESTS
来源期刊：Acta Metallurgica Sinica2004年第3期
论文作者：L.P.Karjalainen S.F.Medina M.C.Somani
Key words：physical simulation; static recrystallization; regression modeling; hot working; steel;
Abstract: The analysis of numerous experimental equations published in the literature reveals a wide scatter in the predictions for the static recrystallization kinetics of steels. The powers of the deformation variables, strain and strain rate, similarly as the power of the grain size vary in these equations. These differences are highlighted and the typical values are compared between torsion and compression tests. Potential errors in physical simulation testing are discussed.
L.P.Karjalainen1，S.F.Medina2，M.C.Somani1
(1.Department of Mechanical Engineering, University of Oulu, FIN-90014 Oulu, Finland;
2.Centro Nacional de Investigaciones Metallurgicas (CENIM-CSIC)
Abstract:The analysis of numerous experimental equations published in the literature reveals a wide scatter in the predictions for the static recrystallization kinetics of steels. The powers of the deformation variables, strain and strain rate, similarly as the power of the grain size vary in these equations. These differences are highlighted and the typical values are compared between torsion and compression tests. Potential errors in physical simulation testing are discussed.
Key words:physical simulation; static recrystallization; regression modeling; hot working; steel;
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