DETERMINATION OF PRECIPITATION-TIME-TEMPERATURE (PTT) DIAGRAMS FOR NB, TI OR V MICRO-ALLOYED STEELS

Authors
MEDINA SF
Citation
Sf. Medina, DETERMINATION OF PRECIPITATION-TIME-TEMPERATURE (PTT) DIAGRAMS FOR NB, TI OR V MICRO-ALLOYED STEELS, Journal of Materials Science, 32(6), 1997, pp. 1487-1492
Citations number
23
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
32
Issue
6
Year of publication
1997
Pages
1487 - 1492
Database
ISI
SICI code
0022-2461(1997)32:6<1487:DOP(DF>2.0.ZU;2-F
Abstract
A method is described, developed in CENIM-CSIC, for studying the kinet ics of strain induced precipitation in micro-alloyed steels. Using tor sion tests, the statically recrystallized fraction has been determined for three Nb, V and Ti micro-alloyed steels at different temperatures and strains. When precipitation starts, the recrystallized fraction d eviates from Avrami's equation, making it possible to identify the mom ent at which precipitation starts (P-s) and finishes (P-f). In this wa y precipitation-time-temperature (PTT) curves can be drawn, showing th e precipitation kinetics in graph form.