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Title: Three phase crystallography and solute distribution analysis during residual austenite decomposition in tempered nanocrystalline bainitic steels

Interphase carbide precipitation due to austenite decomposition was investigated by high resolution transmission electron microscopy and atom probe tomography in tempered nanostructured bainitic steels. Results showed that cementite (θ) forms by a paraequilibrium transformation mechanism at the bainitic ferrite–austenite interface with a simultaneous three phase crystallographic orientation relationship. - Highlights: • Interphase carbide precipitation due to austenite decomposition • Tempered nanostructured bainitic steels • High resolution transmission electron microscopy and atom probe tomography • Paraequilibrium θ with three phase crystallographic orientation relationship.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [2] ;  [1] ;  [2]
  1. Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC), Avda Gregorio del Amo, 8, Madrid E-28040 (Spain)
  2. Department of Materials Science and Engineering, National Taiwan University, 1, Roosevelt Rd. Sec. 4, Taipei 10617, Taiwan (China)
  3. (Australia)
  4. Oak Ridge National Laboratory (ORNL), Materials Science and Technology Division, Oak Ridge, TN 37831-6139 (United States)
Publication Date:
OSTI Identifier:
22288734
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 88; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ATOMS; AUSTENITE; CEMENTITE; CRYSTALLOGRAPHY; CRYSTALS; DECOMPOSITION; NANOSTRUCTURES; PRECIPITATION; STEELS; TOMOGRAPHY; TRANSMISSION ELECTRON MICROSCOPY