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Contribution on the influence of transformation structures under consideration of austenite deformation
Author(s) -
Peisker Dieter,
Doktorowski Annett,
Dittrich Dirk
Publication year - 2001
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.200100093
Subject(s) - austenite , continuous cooling transformation , transformation (genetics) , metallurgy , materials science , deformation (meteorology) , process (computing) , microstructure , computer science , composite material , bainite , chemistry , biochemistry , gene , operating system
Hot forming represents a substantial part of the manufacturing process of many steel products. The crucial microstructural transformation process, which influences the characteristics of a steel considerably, is undisputed the γ/α‐transformation. A successful aid to the interpretation of possible microstructural transformation processes during cooling from the austenitizing or deformation temperature is the determination and handling of CCT diagrams. In this article two steels are examined which differ only in their titanium content. Dilatometric investigations were performed varying the three parameters' transformation temperature, strain and cooling strategy. The insights gathered are illustrated and discussed with the aid of CCT diagrams. An additional transformation below A c1 with a brief curing reheat up to A c3 + 20 K leads to a substantially finer structure. The exploitation of this effect may be of great industrial importance.