Alloying Effects on Reverse Transformation Kinetics from Pearlite in High Carbon Steels

摘要

Practical steels generally consist of transformation products of austenite (γ), such as ferrite (α), pearlite, bainite and martensite. Refinement of parent γ grains is known as one of the most effective methods to refine grain size of those products. To refine γ grain size, reverse transformation to γ has been frequently used. However, in contrast to transformation in γ decomposition, understanding of microstructure change during reverse transformation to γ is insufficient. Recently, our group had investigated reverse transformation kinetics from tempered martensite structure in Fe-C binary and Fe-C-X ternary alloys [1]. Following that study, this paper aims to clarify the alloying effects on the reverse transformation from pearlite structure.