Crystal system of rod-shaped precipitates in an Al-1.0mass%Mg2Si-0.4mass%Si alloy
Crystal system of rod-shaped precipitates in an Al-1.0mass%Mg2Si-0.4mass%Si alloy
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晶体%20系%20of%20棒状%20析出物%20in%20an%20Al-1.0mass%Mg2Si-0.4mass%Si%20合金
DOI：
10.1016/0956-716x(95)00121-b
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
A. Kamio
中科院分区：
文献类型：
--
作者：
K. Matsuda;S. Tada;S. Ikeno;Tatsuo Sato;A. Kamio
The crystal system of a rod-shaped precipitate (metastable phase) in an Al-Mg{sub 2}Si pseudo-binary alloy had been presumed to have a face centered cubic or hexagonal unit cell. Recently, the crystal system of the precipitate was confirmed to be a H.C.P. unit cell through the high resolution transmission electron microscopy (HRTEM) and electron diffraction. The crystal system of the metastable phase in the Al-Mg{sub 2}Si alloy containing excess silicon is not yet precisely determined, although the crystal structure is assumed to be the same as the metastable phase formed in an Al-Mg{sub 2}Si pseudo-binary alloy. In this study, the crystal system of the metastable phase in an Al-1.0mass% Mg{sub 2}Si alloy containing 0.4mass% silicon in excess was investigated using transmission electron microscopy (TEM). A new phase with a hexagonal lattice was found in the present alloy. Both the lattice parameter and the orientation relationship with the matrix are different from those of the metastable phase formed in a pseudo-binary Al-Mg{sub 2}Si alloy.
