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A Strategy for Phase Identification of Precipitates in High Al-containing Austenitic and Ferritic Steels Using Electron Diffraction
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  • Journal title : Applied Microscopy
  • Volume 44, Issue 4,  2014, pp.144-149
  • Publisher : Korean Society of Electron Microscopy
  • DOI : 10.9729/AM.2014.44.4.144
 Title & Authors
A Strategy for Phase Identification of Precipitates in High Al-containing Austenitic and Ferritic Steels Using Electron Diffraction
Heo, Yoon-Uk;
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 Abstract
A strategy for phase identification of precipitates in high Al-containing austenitic and ferritic steels using electron diffraction (ED) is studied. Comparative studies of the various Al-containing precipitates (k-carbide, , , FeAl) show the similarities of crystal structure and lattice parameter. However, the slight differences of lattice parameter and structure display characteristic ED patterns (EDPs) which can be identified. k-carbide and can be differentiated by the length of (the reciprocal lattice vector), even though they show perfectly identical shapes of EDPs. and FeAl show the characteristic EDs in [110] and [112] beam directions due to the differences of Fe site occupancies in unit cells. k-carbide, , and FeAl show also the similar EDs in [112], [112], and [110] beam directions, respectively. All the possible similarities of EDs among each phases and the strategy for phase identification are discussed on the bases of kinematical ED simulation.
 Keywords
Electron diffraction pattern;;;;k-carbide;
 Language
English
 Cited by
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