Effect of austenite grain size on the transformation kinetics of upper and lower bainite in a low-alloy steel
2008; Elsevier BV; Volume: 59; Issue: 1 Linguagem: Inglês
10.1016/j.scriptamat.2008.02.036
ISSN1872-8456
AutoresSeok Jae Lee, June Soo Park, Young‐Kook Lee,
Tópico(s)Metallurgical Processes and Thermodynamics
ResumoThe effect of austenite grain size on the continuous cooling transformation kinetics of upper and lower bainite in a low-alloy steel has been investigated using a dilatometer. The transition temperature between upper and lower bainite is almost constant (430 °C) irrespective of the grain size. The transformation rate of upper bainite increased with a decrease in grain size. The instantaneous transformation rate of lower bainite at each volume fraction is not related to the austenite grain size.
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