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Journal of Materials Science

, Volume 28, Issue 19, pp 5355–5362 | Cite as

Morphological evolution of α/γ interface in Fe-Mn-Al alloy

  • J. G. Duh
  • S. C. Lin
Papers
  • 41 Downloads

Abstract

Series of multiphase diffusion couples were assembled with various terminal α and γ alloys in a Fe-Mn-Al system. These couple series were employed to investigate the development of diffusion structures with planar and non-planar interfaces. Morphology in the diffusion interface was observed by scanning electron microscopy (SEM) and the concentration profile for the constituent element was obtained by electron probe X-ray microanalysis (EPMA) with the aid of quantitative analysis. Transitions from planar interfaces in the α/γ two-phase diffusion couples were indexed by varying the compositions of the terminal alloys. Couples with planar α/γ interfaces exhibited path crossings of the (α/γ) two-phase region parallel to tie-lines. However, the two-phase path crossings for couples developing non-planar interfaces were inclined to tie-lines. The α/γ phase boundary can be determined by the interfacial compositions of the diffusion couple in which the interface is planar.

Keywords

Electron Probe Diffusion Couple Morphological Evolution Constituent Element Planar Interface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • J. G. Duh
    • 1
  • S. C. Lin
    • 1
  1. 1.Department of Materials Science and EngineeringNational Tsing Hua UniversityHsinchuTaiwan

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