Dissolution and precipitation behaviors of complex carbonitrides in austenite of a V-Nb microalloyed steel

Yangsoo Ha, Jae Gil Jung, Young Kook Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Dissolution and precipitation behaviors of complex carbonitrides in austenite of a V-Nb microalloyed steel were quantitatively examined through electrical resistivity measurement and transmission electron microscopy. The electrical resistivity increased with solution treatment temperature up to 1240°C and then was saturated at 225 nΩm for a holding time of 10 min. The electrical resistivity method was also used to quantitatively measure the isothermal precipitation kinetics of the complex carbonitrides in austenite. Nb-rich precipitates were observed in austenite at the early stages of precipitation, but Nb was replaced by V up to the equilibrium amount within the precipitates with further holding time. The time-temperatureprecipitation diagram showed a C-type curve; nose temperature and its incubation time were 900°C and 100 s, respectively.

Original languageEnglish
Pages (from-to)917-923
Number of pages7
JournalJournal of Korean Institute of Metals and Materials
Volume49
Issue number12
DOIs
Publication statusPublished - 2011 Dec 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

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