Effects of Pre-tempering on Intercritical Annealing in Fe-2Mn-0.3C Alloy

Zhen Qing Liu, Goro Miyamoto, Zhi Gang Yang, Chi Zhang, Tadashi Furuhara

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

As-quenched martensite was pre-tempered at 623 K and 923 K (350 °C and 650 °C), and then it reverted to austenite by intercritical annealing at 998 K (725 °C) in a Fe-2Mn-0.3C alloy. Pre-tempering at 623 K (350 °C) accelerates austenite formation, while pre-tempering at 923 K (650 °C) significantly retards it. It is proposed that austenite nucleation is accelerated by increasing the number density and particle size of cementite during tempering, whereas austenite growth is retarded by Mn enrichment in cementite during tempering at high temperature, leading to opposite effects of pre-tempering on reversion kinetics.

Original languageEnglish
Pages (from-to)5290-5294
Number of pages5
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume45
Issue number12
DOIs
Publication statusPublished - 2014

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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