The kinetics of austenite formation at high heating rates

Rem: Revista Escola de Minas

Marciano Quites Macedo²  André Barros Cota¹  Fernando Gabriel Da Silva Araújo¹ 

[1] ,REDEMAT

关键词: Austenitization;    kinetics;    fast heating;    dilatometry;    Austenitização;    cinética;    aquecimento rápido;    dilatometria;   

DOI  :  10.1590/S0370-44672011000200005

来源: SciELO

【 摘 要 】

The variation in critical temperatures for the formation of austenite when increasing the heating rate was studied by dilatometry. The analysis was performed at heating rates between 10 and 90ºC/s. Empirical equations are herein proposed for calculating Ac3 with respect to the heating rate. The results showed that an increase in the heating rate had no influence on Ac1, but Ac3 increased 115ºC. The equations proved to be of a more general use, as they also predicted the results of works on other steels with high values of correlation coefficients.

【 授权许可】

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