Crystal Structure of the β'-Phase in Al-Mg-Si-Ag Alloy

Kenji Matsuda; Junya Nakamura; Yoshio Nakamura; Tatsuo Sato; Susumu Ikeno

doi:10.4028/www.scientific.net/MSF.539-543.837

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HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Crystal Structure of the β'-Phase in Al-Mg-Si-Ag...

Crystal Structure of the β'-Phase in Al-Mg-Si-Ag Alloy

Abstract:

The crystal structure of metastable phase in Ag added Al-Mg-Si alloy was investigated by comparing the β’-phases in Al-Mg-Si alloy without Ag, using images of high resolution transmission electron microscope (HRTEM), selected area electron diffraction patterns (SADPs) and an energy dispersive X-ray spectroscopy (EDS). SADPs and HRTEM images obtained from metastable phase in the Ag added Al-Mg-Si alloy showed similar to those of β’-phase in Al-Mg-Si alloy without Ag and had different lattice spacings because of the effect of Ag. According to our careful analysis on obtained HRTEM images and SADPs, it includes more complicated crystal lattice of distorted hexagons.