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Study of Precipitation Sequence in Al-Mg-Si Alloys by HRTEM

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Abstract:

The precipitation sequence of Al-Mg-Si alloys has been studied by high-resolution transmission electron microscopy (HRTEM). G.P. zone is a fine-plate having dimensions of a mono- layer in thickness, 2.5nm in width, and less than 30nm in length. Its elongated direction is parallel to the <100>m direction. Several types of metastable phases were observed in the excess Si alloy and they were classified with the b ’-phase in the balanced alloy. Especially, the b ”-phase was the typical phase in the excess Si alloy aged at low temperature or at the early stage during aging.

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Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

361-364

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.361

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Online since:

January 2005

Authors:

Kenji Matsuda, Susumu Ikeno

Keywords:

Aluminium Alloy, GP Zones, High Resolution Transmission Electron Microscopy, Metastable Phase

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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