Internal variable model applied to the prediction of grain size during thermomechanical processing of C-Mn steel.

• Autorzy: Pietrzyk M. , Hodgson P.D.
• Konferencja: XV Physical Metallurgy and Materials Science Conference on Advanced Materials & Technologies AMT'98, Kraków-Krynica, Poland, 17-21 May, 1998
• Języki publikacji: EN

Abstrakty

EN

The objective of the work is a development of the internal variable model of grain size changes during hot plastic deformation and implementation of this model into finite-element thermal-mechanical-microstructural programs. Constants in the model are evaluated using the inverse technique and experimental data obtained in plastometric tests. The cost function in this technique is composed of the vector of differences between measured and calculated values of stress, fractional softening and grain size. The general concept of the approach assumes that a number of new grains per old grain after a cycle of recrystallization is included as a varying parameter in the inverse analysis. This enhanced description of the grain size improved the simulation of the multi-stage deformations, where the slope of stress strain curve and kinetics of recrystallization after reloading are very sensitive on the grain size.

Słowa kluczowe

EN

model; prediction; grain size; plastic deformation; thermomechanical processing; recrystallization; carbon-manganese steel

PL

model; prognoza; wielkość ziarna; odkształcenie plastyczne; obróbka cieplno-mechaniczna; rekrystalizacja; stal manganowa o małej zawartości manganu

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 1998
• Tom: R. XIX, nr 4
• Strony: 645--650
• Opis fizyczny: Bibliogr. 16 poz., tab., rys.

Twórcy

autor

Pietrzyk M.

• Akademia Gorniczo-Hutnicza, Kraków, Poland

autor

Hodgson P.D.

• Akademia Gorniczo-Hutnicza, Kraków, Poland

• Akademia Górniczo-Hutnicza

Bibliografia

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