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Use of EBSD to identify phases in interdendrite region of a cast Zn–Al‐based alloy (ZA27)
Author(s) -
TO S.,
ZHU Y. H.,
LEE W. B.
Publication year - 2007
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.2007.01728.x
Subject(s) - electron backscatter diffraction , alloy , diffraction , materials science , crystallography , scanning electron microscope , electron diffraction , phase (matter) , hexagonal crystal system , decomposition , electron microscope , metallurgy , chemistry , microstructure , optics , composite material , physics , organic chemistry
Summary Electron backscattered Kikuchi diffraction methodology was used to identify phases in the interdendrite region of an alloy ZA27. Two Zn‐rich hexagonal close‐packed structure phases η and ɛ phases were distinguished using predetermined lattice parameters of the phases. In relation to studies of scanning electron microscopy and X‐ray diffraction, electron backscattered diffraction results revealed that the Al‐rich precipitates of the α phase were from decomposition of the η′ T , and the four‐phase transformation: α+ɛ→ T′+η, had occurred in the ɛ phase after ageing at 150°C for 8 h.