Paper Title:
HRTEM Observation of the Precipitates in Heat-Resistant Mg-Gd-Y-Zr Alloy
  Abstract

The high resolution transmission electron microscope (HRTEM) observation was carried out to investigate the microstructure of precipitates in Mg-Gd-Y-Zr alloy. In the early stage of aging at 423K, monoatomic layers were observed along the (1 1 00)Mg plane. After 64h aging at 423K, the contrast of β” phase based on ordered D019 hexagonal super lattice structure was appeared. The monoatomic layers, two layers spaced by (1 1 00) Mg planes and β’ phase based on bco-structure were observed in the specimen aged for 128h. In the peak- aged specimen, the β’ phase and monoatomic layers were observed.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
1769-1774
DOI
10.4028/www.scientific.net/MSF.539-543.1769
Citation
T. Kawabata, Y. Fukuda, K. Matsuda, S. Kamado, Y. Kojima, S. Ikeno, "HRTEM Observation of the Precipitates in Heat-Resistant Mg-Gd-Y-Zr Alloy", Materials Science Forum, Vols. 539-543, pp. 1769-1774, 2007
Online since
March 2007
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