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Title: High-resolution electron microscopy on the structure of Guinier-Preston zones in an Al-1.6 mass pct Mg{sub 2}Si alloy

Abstract

The structure of the Guinier-Preston (GP) zone in an Al-1.6 mass pct Mg{sub 2}Si alloy aged at 343 and 423 K was investigated by high-resolution transmission electron microscopy (HRTEM). The morphology of the GP zone is that of a fine plate having the dimensions of a monolayer in thickness, 2.5 nm in width, and less than 30 nm in length. Its elongated direction is parallel to the <100>{sub m} direction. The chemical composition of the GP zone in an Al-Mg{sub 2}Si alloy indicated a ratio of Mg/Si = 1.0. The zones aggregate with increasing aging time and exhibit a more complicated morphology because of the transformation to the metastable phase that takes place inside the GP zones.

Authors:
; ; ;  [1];  [2]; ;  [3]
  1. Toyama Univ. (Japan). Dept. of Materials Science and Engineering
  2. Toyama Prefectural Univ. (Japan). Research Inst. for Tech.
  3. Tokyo Inst. of Tech. (Japan). Dept. of Metallurgical Engineering
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
616491
Resource Type:
Journal Article
Journal Name:
Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
Additional Journal Information:
Journal Volume: 29; Journal Issue: 4; Other Information: PBD: Apr 1998
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM BASE ALLOYS; GUINIER-PRESTON ZONES; MAGNESIUM ALLOYS; SILICON ALLOYS; CHEMICAL COMPOSITION; MORPHOLOGY

Citation Formats

Matsuda, K, Gamada, H, Fujii, K, Ikeno, S, Uetani, Y, Sato, T, and Kamio, A. High-resolution electron microscopy on the structure of Guinier-Preston zones in an Al-1.6 mass pct Mg{sub 2}Si alloy. United States: N. p., 1998. Web. doi:10.1007/s11661-998-0242-7.
Matsuda, K, Gamada, H, Fujii, K, Ikeno, S, Uetani, Y, Sato, T, & Kamio, A. High-resolution electron microscopy on the structure of Guinier-Preston zones in an Al-1.6 mass pct Mg{sub 2}Si alloy. United States. https://doi.org/10.1007/s11661-998-0242-7
Matsuda, K, Gamada, H, Fujii, K, Ikeno, S, Uetani, Y, Sato, T, and Kamio, A. 1998. "High-resolution electron microscopy on the structure of Guinier-Preston zones in an Al-1.6 mass pct Mg{sub 2}Si alloy". United States. https://doi.org/10.1007/s11661-998-0242-7.
@article{osti_616491,
title = {High-resolution electron microscopy on the structure of Guinier-Preston zones in an Al-1.6 mass pct Mg{sub 2}Si alloy},
author = {Matsuda, K and Gamada, H and Fujii, K and Ikeno, S and Uetani, Y and Sato, T and Kamio, A},
abstractNote = {The structure of the Guinier-Preston (GP) zone in an Al-1.6 mass pct Mg{sub 2}Si alloy aged at 343 and 423 K was investigated by high-resolution transmission electron microscopy (HRTEM). The morphology of the GP zone is that of a fine plate having the dimensions of a monolayer in thickness, 2.5 nm in width, and less than 30 nm in length. Its elongated direction is parallel to the <100>{sub m} direction. The chemical composition of the GP zone in an Al-Mg{sub 2}Si alloy indicated a ratio of Mg/Si = 1.0. The zones aggregate with increasing aging time and exhibit a more complicated morphology because of the transformation to the metastable phase that takes place inside the GP zones.},
doi = {10.1007/s11661-998-0242-7},
url = {https://www.osti.gov/biblio/616491}, journal = {Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science},
number = 4,
volume = 29,
place = {United States},
year = {1998},
month = {4}
}