title: Use of EBSD to identify phases in interdendrite region of a cast Zn-Al-based alloy (ZA27).
abstract: 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 eta and epsilon 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 alpha phase were from decomposition of the eta'(T), and the four-phase transformation: alpha+epsilon--> T'+eta, had occurred in the epsilon phase after ageing at 150 degrees C for 8 h.
authors.affiliation: Advanced Manufacturing Technology Research Center, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
authors.forename: S
authors.initials: S
authors.lastname: To
authors.forename: Y H
authors.initials: YH
authors.lastname: Zhu
authors.forename: W B
authors.initials: WB
authors.lastname: Lee