The Zn-Mg-Y phase diagram involving quasicrystals

The Zn-Mg-Y phase diagram involving quasicrystals
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DOI:
10.1080/01418610008212098
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发表时间:
2000-05
期刊:
Philosophical Magazine A
影响因子:
--
通讯作者:
A. Tsai;Y. Murakami;A. Niikura
A. Tsai;Y. Murakami;A. Niikura
中科院分区:
其他
文献类型:
--
作者:
A. Tsai;Y. Murakami;A. Niikura

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测定了Zn-Mg-Y三元合金在700 K、773 K和873 K的等温截面,其等温截面为30-70 at.% Zn,20-60at.% Mg和0- 20 at.% Y使用扫描电子显微镜(SEM),波长色散X射线,X射线衍射和透射电子显微镜技术。二十面体相在873 K时具有三个不同的相(L,Z,H),在773 K时具有四个不同的相(L,W,Z,H),在700 K时具有五个不同的相(L,W,Z,H,α)。在这些温度下的i相的组成的平衡范围进行了测定。
Abstract Isothermal sections of the Zn—Mg-Y equilibrium phase diagram at 700 K, 773K and 873 K have been determined in the region of 30–70 at.%Zn, 20–60at.%Mg and 0–20at.%Y using scanning electron microscopy (SEM), wavelength dispersive X-ray, X-ray diffraction and transmission electron microscopy techniques. The icosahedral phase has equilibrium phase fields with three distinct phases (L, Z, H) at 873 K, four distinct phases (L, W, Z, H) at 773 K and five distinct phases (L, W, Z, H, α) at 700 K. The equilibrium range of composition for the i-phase at these temperatures was determined.