Continuous cooling transformation temperatures and microstructures of niobium bearing microalloyed steels

Young Kook Lee, Jin Myung Hong, Chong Sool Choi, Jae Kon Lee

Research output: Contribution to journalConference article

12 Citations (Scopus)


Effects of niobium content and cooling rate on ferrite and bainite start temperatures (Ar3, Bs) and microstructural features have been studied in niobium bearing ultralow carbon microalloyed steels. The Ar3 and Bs temperatures decrease as niobium content or cooling rate is increased. The dependence of Ar3 on cooling rate is greater than that of Bs in all niobium contents. The bainitic ferrite laths become longer and narrower with increasing niobium content and cooling rate, and niobium also shows a tendency to decrease polygonal ferrite grain size.

Original languageEnglish
Pages (from-to)65-68
Number of pages4
JournalMaterials Science Forum
Issue numberI
Publication statusPublished - 2005 Apr 25
EventPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
Duration: 2004 Nov 22004 Nov 5


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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