A MULTISCALE MODEL OF HEATING-REMELTING-COOLING IN THE GLEEBLE 3800 THERMO-MECHANICAL SIMULATOR SYSTEM

被引:7
作者
Hojny, M. [1 ]
Glowacki, M. [1 ,5 ]
Bala, P. [2 ,3 ]
Bednarczyk, W. [2 ]
Zalecki, W. [4 ]
机构
[1] AGH Univ Sci & Technol, Fac Met Engn & Ind Comp Sci, Dept Appl Comp Sci & Modelling, Al Mickiewicza 30, PL-30059 Krakow, Poland
[2] AGH Univ Sci & Technol, Fac Met Engn & Ind Comp Sci, Dept Phys & Powder Met, Al Mickiewicza 30, PL-30059 Krakow, Poland
[3] AGH Univ Sci & Technol, Acad Ctr Mat & Nanotechnol, Al Mickiewicza 30, PL-30059 Krakow, Poland
[4] Inst Ferrous Met, 12-14 K Miarki Str, PL-44100 Gliwice, Poland
[5] Jan Kochanowski Univ, Fac Math & Nat Sci, 5 Zeromskiego Str, PL-25369 Kielce, Poland
关键词
DEFFEM package; finite element method; Monte Carlo method; physical simulation; computer simulation; mushyzone; extra-high temperatures; DEFORMATION-BEHAVIOR; ALLOY; SOLIDIFICATION;
D O I
10.24425/amm.2019.126266
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The paper presents a multi-scale mathematical model dedicated to a comprehensive simulation of resistance heating combined with the melting and controlled cooling of steel samples. Experiments in order to verify the formulated numerical model were performed using a Gleeble 3800 therm-mechanical simulator. The model for the macro scale was based upon the solution of Fourier-Kirchhoff equation as regards predicting the distribution of temperature fields within the volume of the sample. The macro scale solution is complemented by a functional model generating voluminal heat sources, resulting from the electric current flowing through the sample. The model for the micro-scale, concerning the grain growth simulation, is based upon the probabilistic Monte Carlo algorithm, and on the minimization of the system energy. The model takes into account the forming mushy zone, where grains degrade at the melting stage - it is a unique feature of the micro-solution. The solution domains are coupled by the interpolation of node temperatures of the finite element mesh (the macro model) onto the Monte Carlo cells (micro model). The paper is complemented with examples of resistance heating results and macro- and micro-structural tests, along with test computations concerning the estimation of the range of zones with diverse dynamics of grain growth.
引用
收藏
页码:401 / 412
页数:12
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