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Grain refinement of microalloyed austenite due to statical recrystallization after hot deformation
Author(s) -
Kaspar Radko,
Pawelski Oskar
Publication year - 1985
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.198500670
Subject(s) - recrystallization (geology) , austenite , metallurgy , dynamic recrystallization , deformation (meteorology) , materials science , microalloyed steel , nucleation , composite material , hot working , thermodynamics , geology , physics , microstructure , paleontology
In a microalloyed Nb‐Mo steel the austenite structure was evaluated. For hot compression tests in the temperature region of 1000–1150°C with subsequent complete statical recrystallization the hot deformation simulator (WUMSI) was employed. Effects of initial austenite grain size, strain and deformation temperature on recrystallized austenite structure were established. The results emphasize the controlling role of potential nucleation sites. The single deformation study was supplemented by some multiple deformation tests and common guidelines were formulated.