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采用X射线衍射方法,显示出镁-5Wt％锌合金在165℃时效初期有两种过渡相β′1和β′2共存。对细杆状过渡相,β′2的一维衍射现象进行了详细分析。这种过渡相具有六角点阵结构,其[0001]轴是杆的长轴,它的点阵常数及与母相间的取向关系经测定为:a(β′2)=13.2?,c(β′2)=5.25?,[0001](β′2)The co-existence of two transition phases β′1 and β′2 at the initial stage of 165℃ aging of a Mg-5% Zn alloy was shown by means of X-ray diffraction method. The one-dimensional diffraction phenomena of the thin rod-like transition phase β′2 were investigated in detail. This transition phase has a hexagonal lattice structure, its long axis is the 6-fold symmetry axis [0001](β′2). The lattice constants of β′2 and its orientational relationship with the magnesium matrix are found as follows:a(β′2)=13.2?,c(β′2)=5.25?,[0001](β′2)∥[0001]M,(β′2)∥M. The problem concerning the lattice distortion of the matrix by precipitation of the β′2 phase has been discussed.
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物理学报. 1980, 29(1): 25-34.
doi: 10.7498/aps.29.25.
镁-锌时效合金中一维过渡相β′2的晶体学研究
- 收稿日期: 1978-11-08
- 刊出日期: 2005-07-29
摘要: 采用X射线衍射方法,显示出镁-5Wt％锌合金在165℃时效初期有两种过渡相β′1和β′2共存。对细杆状过渡相,β′2的一维衍射现象进行了详细分析。这种过渡相具有六角点阵结构,其[0001]轴是杆的长轴,它的点阵常数及与母相间的取向关系经测定为:a(β′2)=13.2?,c(β′2)=5.25?,[0001](β′2)
English Abstract
A CRYSTALLOGRAPHIC INVESTIGATION ON THE ONE-DIMENSIONAL TRANSITION PHASE β2 IN AN AGED Mg-Zn ALLOY
- Received Date:
08 November 1978
- Published Online:
29 July 2005
Abstract: The co-existence of two transition phases β′1 and β′2 at the initial stage of 165℃ aging of a Mg-5% Zn alloy was shown by means of X-ray diffraction method. The one-dimensional diffraction phenomena of the thin rod-like transition phase β′2 were investigated in detail. This transition phase has a hexagonal lattice structure, its long axis is the 6-fold symmetry axis [0001](β′2). The lattice constants of β′2 and its orientational relationship with the magnesium matrix are found as follows:a(β′2)=13.2?,c(β′2)=5.25?,[0001](β′2)∥[0001]M,(β′2)∥M. The problem concerning the lattice distortion of the matrix by precipitation of the β′2 phase has been discussed.
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