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Título

Static recrystallization of austenite and strain induced precipitation kinetics in titanium microalloyed steels

AutorMedina, Sebastián F.; Mancilla, Juana E.
Palabras claveStatic recrystallization
Microalloyed steels
Titanium
Torsion tests
Fecha de publicación1994
EditorElsevier
CitaciónActa Metallurgica et Materialia 42 (12) : 3945-3951 (1994)
ResumenUsing torsion tests and applying the back extrapolation method the recrystallized fraction of austenite was measured at two strains (0.20 and 0.35) and several temperature makes it possible steels. Graphical representation of the activation energy vs the inverse of the temperature makes it possible to determine the static recrystallization critical temperature (SRCT) of each steel as a function of the strain. With the results obtained, a model was constructed for the recrystallized fraction both at temperatures above and below the SRCT, and this, together with other equations already published, permits calculation of the residual strain and austenite grain size which the steel is expected to have at the end of rolling and before the γ → α transformation. Graphs of the recrystallized fraction vs time show the kinetics of strain induced precipitation and PTT diagrams (precipitation-time-temperature) were constructed for the three steels. It is noted that the degree to which the strain affects the precipitation kinetics decreases as the titanium content of the steel is increased.
Versión del editorhttp://dx.doi.org/10.1016/0956-7151(94)90172-4
URIhttp://hdl.handle.net/10261/46382
DOI10.1016/0956-7151(94)90172-4
ISSN0956-7151
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