Effect of grain size on strain-induced martensitic transformation start temperature in an ultrafine grained metastable austenitic steel

Yeon Seung Jung, Young-Kook Lee, David K. Matlock, Martin C. Mataya

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Tensile tests were used to investigate the effect of grain size on the strain-induced martensitic transformation start temperature in metastable austenitic steel with special attention to ultrafine grain size. The austenite grains were refined to submicron size by the strain-induced martensite and its reverse transformations (SIMRT), which occurred during a conventional cold rolling and annealing process. The start temperature of the straininduced martensitic transformation was linearly lowered with a decrease in austenite grain size, even down to submicron grain sizes. This result is due to the decrease in grain size causing an increase in the temperature dependency of the strain-induced martensitic transformation and higher austenite stability brought about by grain refinement.

Original languageEnglish
Pages (from-to)553-556
Number of pages4
JournalMetals and Materials International
Volume17
Issue number4
DOIs
Publication statusPublished - 2011 Aug 1

Fingerprint

Austenitic steel
Martensitic transformations
martensitic transformation
Austenite
grain size
steels
austenite
Grain refinement
Cold rolling
Martensite
Temperature
temperature
cold rolling
Annealing
tensile tests
martensite
austenitic steel
Ultrafine
annealing

All Science Journal Classification (ASJC) codes

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

Cite this

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Effect of grain size on strain-induced martensitic transformation start temperature in an ultrafine grained metastable austenitic steel. / Jung, Yeon Seung; Lee, Young-Kook; Matlock, David K.; Mataya, Martin C.

In: Metals and Materials International, Vol. 17, No. 4, 01.08.2011, p. 553-556.

Research output: Contribution to journalArticle

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