Characterization of nanoscale NiAl-type precipitates in a ferritic steel by electron microscopy and atom probe tomography

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Z. K. Teng
  • M. K. Miller
  • G. Ghosh
  • S. Huang
  • K. F. Russell
  • M. E. Fine
  • P. K. Liaw

Detail(s)

Original languageEnglish
Pages (from-to)61-64
Journal / PublicationScripta Materialia
Volume63
Issue number1
Publication statusPublished - Jul 2010
Externally publishedYes

Abstract

The microstructure of NiAl-type (β′) precipitates in an aged ferritic steel (Fe-12.7Al-9Ni-10.2Cr-1.9Mo, at.%) is characterized by transmission and analytical electron microscopy (AEM) and atom probe tomography (APT). The alloy shows a duplex precipitation of β′ particles: primary with an average diameter of 130 nm and secondary with an average diameter of 3 nm. Based on APT, the primary and secondary β′ have compositions of Ni41.2Al43.6Fe12.7Cr0.8Mo1.4 and Ni26.3Al41.6Fe26.9Cr3.3Mo1.7, respectively.

Research Area(s)

  • Analytical electron microscopy, Atom probe tomography, Ferritic steel, Precipitation

Citation Format(s)

Characterization of nanoscale NiAl-type precipitates in a ferritic steel by electron microscopy and atom probe tomography. / Teng, Z. K.; Miller, M. K.; Ghosh, G. et al.
In: Scripta Materialia, Vol. 63, No. 1, 07.2010, p. 61-64.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review