Prediction of austenite decomposition kinetics in powder steel depending on porosity

International Conference on Innovations and Prospects of Development of Mining Machinery and Electrical Engineering 2018

矿业工程;电工学

Tsyganova, M.S.^1 ; Ivashko, A.G.^1 ; Tsyganova, A.I.^2

Tyumen State University, Volodarskogo Av. 6, Tyumen

625003, Russia^1

Finance Group S.A., Presnenskaya Emb. 12, Moscow

123100, Russia^2

关键词: Austenite decomposition;    Heat treatment modes;    Kinetic diagrams;    Porosity effect;    Powder steel;    Quantitative data;    Transformation kinetics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/194/4/042023/pdf
DOI  :  10.1088/1755-1315/194/4/042023

来源: IOP

【 摘 要 】

For the rationale behind the powder steel heat treatment modes, quantitative data on austenite decomposition kinetics are required. Gaining these data experimentally for different values of porosity is a quite difficult and laborious process. In this article an approach, based on appliance of simulation to evaluation of porosity effect on austenite decomposition kinetics and constructing of isothermal and kinetic diagrams for powder steel by calculation, is proposed. Adaptability of the shown models to predict the transformation kinetics was verified on carbon steel (0.8% C) with different porosity and steel PK45N2 (0.45% C, 2% Ni) with different porosity.