Reverse transformation of ferrite and pearlite to austenite in an ultrafine-grained low-carbon steel fabricated by severe plastic deformation

Young Il Son, Young-Kook Lee, Kyung Tae Park

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Reverse transformation characteristics of a low-carbon steel consisting of ultrafine-grained (UFG) ferrite and severely deformed pearlite by severe plastic deformation were investigated and compared to those of the steel having coarse-grained (CG) ferrite and undeformed pearlite by austenitization and subsequent air cooling. Coarse-grained steel exhibited two serial transformation stages, i.e., pearlite → austenite followed by ferrite → austenite. Contrarily, UFG steel transformed with the three serial stages, i.e., probably carbon-supersaturated ferrite → austenite, not-fully-dissolved pearlite - austenite, and ferrite → austenite transformations.

Original languageEnglish
Pages (from-to)3161-3164
Number of pages4
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume37
Issue number10
DOIs
Publication statusPublished - 2006 Jan 1

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pearlite
low carbon steels
Pearlite
Low carbon steel
austenite
Austenite
plastic deformation
Ferrite
ferrites
Plastic deformation
Steel
steels
air cooling
Carbon
Ultrafine
Cooling
carbon
Air

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "Reverse transformation characteristics of a low-carbon steel consisting of ultrafine-grained (UFG) ferrite and severely deformed pearlite by severe plastic deformation were investigated and compared to those of the steel having coarse-grained (CG) ferrite and undeformed pearlite by austenitization and subsequent air cooling. Coarse-grained steel exhibited two serial transformation stages, i.e., pearlite → austenite followed by ferrite → austenite. Contrarily, UFG steel transformed with the three serial stages, i.e., probably carbon-supersaturated ferrite → austenite, not-fully-dissolved pearlite - austenite, and ferrite → austenite transformations.",
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AB - Reverse transformation characteristics of a low-carbon steel consisting of ultrafine-grained (UFG) ferrite and severely deformed pearlite by severe plastic deformation were investigated and compared to those of the steel having coarse-grained (CG) ferrite and undeformed pearlite by austenitization and subsequent air cooling. Coarse-grained steel exhibited two serial transformation stages, i.e., pearlite → austenite followed by ferrite → austenite. Contrarily, UFG steel transformed with the three serial stages, i.e., probably carbon-supersaturated ferrite → austenite, not-fully-dissolved pearlite - austenite, and ferrite → austenite transformations.

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