Paper Title:
Characterizing Precipitation Defects in Nickel Based 718 Alloy
  Abstract

In the present study we examine the crystallographic structure of the , ’’ and  phases present in nickel base 718 alloy. The chemical ordering of Nb atoms and possible planar faults that may be observed in ’’ precipitates are detailed. High resolution transmission electron microscopy (HRTEM) observations of various faults are reported. The decomposition of a matrix dislocation to form a locked V shaped configuration is shown. The observation along [110] type direction allows to identify the type of defect, which is observed as a pure geometric stacking fault.

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
517-522
DOI
10.4028/www.scientific.net/MSF.636-637.517
Citation
A. Niang, J. Huez, J. Lacaze, B. Viguier, "Characterizing Precipitation Defects in Nickel Based 718 Alloy", Materials Science Forum, Vols. 636-637, pp. 517-522, 2010
Online since
January 2010
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Price
$32.00
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