Nanostructure evolution in an austenitic stainless steel subjected to multiple forging at ambient temperature

Andrey Belyakov, Kaneaki Tsuzaki, Rustam Kaibyshev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Deformation behavior and structural changes were studied in a 304-type austenitic stainless steel subjected to large strain multiple forging at an ambient temperature. The number of forging passes was 10, leading to the total cumulative strain of 4.0. The yield stress rapidly increased to about 1000 MPa after the first forging pass and then gradually approached a saturation level of about 2000 MPa in large strains. The grain/subgrain size decreased to about 50 nm at total strain of about 2. This grain/subgrain size reduced a little upon further processing; and comprised 35 nm after a total strain of 4.0. The fast kinetics for grain refinement was associated with deformation twinning and strain-induced martensitic transformation. The both of them resulted in fast grain subdivision at relatively small strains.

Original languageEnglish
Title of host publicationNanomaterials by Severe Plastic Deformation, NanoSPD5
Pages553-558
Number of pages6
DOIs
Publication statusPublished - Feb 25 2011
Externally publishedYes
Event5th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD5 - Nanjing, China
Duration: Mar 21 2011Mar 25 2011

Publication series

NameMaterials Science Forum
Volume667-669
ISSN (Print)0255-5476

Other

Other5th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD5
CountryChina
CityNanjing
Period3/21/113/25/11

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All Science Journal Classification (ASJC) codes

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

Cite this

Belyakov, A., Tsuzaki, K., & Kaibyshev, R. (2011). Nanostructure evolution in an austenitic stainless steel subjected to multiple forging at ambient temperature. In Nanomaterials by Severe Plastic Deformation, NanoSPD5 (pp. 553-558). (Materials Science Forum; Vol. 667-669). https://doi.org/10.4028/www.scientific.net/MSF.667-669.553