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Title: Modern steels at atomic and nanometre scales

Processing bulk nanocrystalline materials for structural applications still poses a difficult challenge, particularly in achieving an industrially viable process. Recent work in ferritic steels has proved that it is possible to move from ultrafine to nanoscale by exploiting the bainite reaction without the use of severe deformation, rapid heat treatment or mechanical processing. This new generation of steels has been designed in which transformation at low temperature leads to a nanoscale structure consisting of extremely fine, 20–40 nm thick plates of bainitic ferrite and films of retained austenite. Finally, a description of the characteristics and significance of this remarkable microstructure is provided here.
Authors:
 [1] ;  [1] ;  [2]
  1. National Center for Metallurgical Research (CENIM-CSIC), Madrid (Spain)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
OSTI Identifier:
1185634
Grant/Contract Number:
AC05-00OR22725; RFSR-CT-2012-00017
Type:
Accepted Manuscript
Journal Name:
Materials Science and Technology
Additional Journal Information:
Journal Volume: 31; Journal Issue: 7; Journal ID: ISSN 0267-0836
Publisher:
Taylor & Francis
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES phase transformations; bainite; steels; atom probe tomography (APT)