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Effect of deformation conditions on the transformation of micro‐alloyed medium‐carbon forging steels
Author(s) -
Kaspar Radko,
Hoppe Harald,
Pawelski Oskar
Publication year - 1992
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199200528
Subject(s) - forging , continuous cooling transformation , materials science , metallurgy , austenite , deformation (meteorology) , bainite , microstructure , vanadium , carbon steel , carbon fibers , titanium , composite material , composite number , corrosion
The CCT diagrams of three medium‐carbon steels without and with microalloying by vanadium and titanium were constructed by applying direct cooling of as‐deformed austenite. Deformation parameters corresponding to those of industrial forging were varied with a laboratory simulation technique by using the plane strain hot compression test. The effect of microalloying, deformation, and deformation temperature on the amount of structural substituents was quantified. For practical application of the study the as‐forged controlled cooling conditions were determined to achieve the desired bainite‐free ferritic‐pearlitic microstructure with beneficial mechanical properties.