Grain refinement processes for superplastic forming of AISI 304 and 304L austenitic stainless steels

Y. Yagodzinskyy, J. Pimenoff, O. Tarasenko, J. Romu, Pertti Nenonen, Hannu Hänninen

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Elongation to fracture values higher than 300% were obtained for cold rolled AISI 304 type steel grades in hot tensile tests. The effects of heating rate and carbon content on the elongation of the steels studied are discussed based on internal friction measurements and TEM observations. A slow heating rate to the test temperature and high carbon content of the steel led to a fine and equiaxial grain structure of the steels.
Original languageEnglish
Pages (from-to)925-929
JournalMaterials Science and Technology
Issue number7
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed



  • 304 stainless steel
  • superplastic forming
  • reversion from -martensite to austenite
  • hot tensile tests
  • internal friction

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