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박성환(S. H. Park),길태동(T. D. Kil),오일영(I. Y. Oh),우영윤(Y. Y. Woo),문영훈(Y. H. Moon) 한국소성가공학회 2016 한국소성가공학회 학술대회 논문집 Vol.2016 No.4
In this study, cracking susceptibility of PREN 50 grade duplex stainless steel is predicted by using deformation processing map. To develop deformation processing map, dynamic materials model has been used on the basis of Gleeble compression test. Deformation processing map indicating η(the efficiency of power dissipation) which means how efficiently applied power dissipated through microstructural evolution. During compression test, unit deformation volumes in specimen have different microstructure ratio because they are deformed at different working conditions. To predict cracking susceptibility, quantitative index has been suggested. As a quantitative index, summation of η multiplied by unit deformation volume fraction has been produced. For the validation of quantitative index, the predicted condition has been experimentally compared.