Paper Title:
Effect of Mg Content on the Precipitation in Al-Mg-Ge Alloys
  Abstract

Rod-shaped precipitates in Al -1.1 mass% Mg2Ge (balanced) and Al -1.0 mass% Mg2Ge – 0.5 mass% Mg (excess Mg) alloys aged at 523 K were observed by high-resolution transmission electron microscope (HRTEM) to understand their crystal lattices and chemical compositions. Rod-shaped precipitates were parallel to <100> directions of the matrix. There were 2 groups for rod-shaped precipitates in the base alloy, namely, small cross sections about 10 nm and large ones over 20nm in diameter. Small precipitates showed a hexagonal network of bright dots in their HRTEM images, and its crystal lattice was estimated as a hexagonal having a= 0.72 and c= 0.405 nm based on analysis of HRTEM images and selected area electron diffraction (SAED) patterns. This lattice parameter was slight larger than that of the β’-phase in Al-Mg-Si alloy.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
2049-2052
DOI
10.4028/www.scientific.net/MSF.561-565.2049
Citation
K. Matsuda, T. Munekata, S. Ikeno, "Effect of Mg Content on the Precipitation in Al-Mg-Ge Alloys", Materials Science Forum, Vols. 561-565, pp. 2049-2052, 2007
Online since
October 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: V.A. Borodin, M.O. Ruault, Mariya G. Ganchenkova, F. Fortuna
Abstract:The paper presents the results of experimental in-situ observations of cobalt disilicide nucleation in Co+ implanted silicon and ab initio...
133
Authors: Dae Guen Kim, Hyeon Taek Son, Jae Seol Lee
Abstract:The effect of Ca addition on microstructure change, precipitation behaviours and mechanical properties, in the present work, of Mg-Sn based...
169
  | Authors: A.V. Mogilatenko, Frank Allenstein, M.A. Schubert, Meiken Falke, G. Beddies, Wolfgang Neumann
Abstract:Thin Ni/Al and Ni/Ga layers of different atomic ratios were codeposited onto Si(001) at room temperature followed by subsequent annealing....
2938
Authors: Ying Chen, Satoshi Hirosawa, Shuichi Iwata
Abstract:The NdOx phase formed at the Nd/Nd-Fe-B interface in Nd-sputtered Nd-Fe-B sintered magnets is paid rather attention recently due to its...
1674
Authors: Yusuke Onezawa, Yasuhide Inoue, Masazumi Arao, Yasumasa Koyama
Chapter 12: Nanostructured Materials
Abstract:The electronic states of Sr1-xNdxMnO3 with the simple perovskite structure are characterized by a...
532