Grain-boundary structure and segregation behavior in a nickel-base stainless alloy

Sung Il Baik, M. J. Olszta, S. M. Bruemmer, David N. Seidman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

Atom-probe tomography (APT) is utilized to obtain three-dimensional chemical information concerning grain boundary (GB) segregation in a Ni-Cr-Fe alloy 600 with atomic spatial resolution. Detailed crystallography of GBs is determined using an approach that combines electron backscatter diffraction and focused ion-beam microscopy to establish a GB's five macroscopic degrees of freedom, followed by an APT GB composition analysis. Characterizations of GB microstructure and microchemistry are performed to improve our understanding of mechanisms controlling intergranular attack and stress-corrosion cracking.

Original languageEnglish (US)
Pages (from-to)809-812
Number of pages4
JournalScripta Materialia
Volume66
Issue number10
DOIs
StatePublished - May 1 2012

Keywords

  • Atom-probe tomography
  • Grain boundary composition
  • Grain boundary structure
  • Nickel-base alloy
  • Segregation

ASJC Scopus subject areas

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

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