HREM and HAADF Studies of Precipitates in the Mg-Y-Nd Alloy System

Abstract:

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By means of high resolution transmission electron microscopy (HREM) and high-angle annular dark-field image technique (HAADF), morphological, structural and compositional characteristics of the precipitates in the Mg-4Y-3Nd alloy aged at 200°C for different periods of time have been studied. On the basis of HREM observations, an atomic structural model for the β’-precipitate with an orthorhombic unit cell has been proposed. The characteristic distribution of the precipitates which are rich in rare-earth elements (Y, Nd) has been clearly revealed by the HAADF imaging technique.

Info:

Periodical:

Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

275-278

DOI:

10.4028/www.scientific.net/MSF.561-565.275

Citation:

W. Sun et al., "HREM and HAADF Studies of Precipitates in the Mg-Y-Nd Alloy System", Materials Science Forum, Vols. 561-565, pp. 275-278, 2007

Online since:

October 2007

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$35.00

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