有序合金;ordered alloy，指合金体系中不同组分原子分别占据晶胞中不同结构位置的合金物相，它一般是相对于无序合金相(具相同化学组成，但组分原子按组成比以统计原子的形态占据诸结构位置)而说的。
开发金属间化合物为基的有序合金具有重要意义，迫切的问题是解决室温脆性。
Exploiting ordered alloys based on intermetallic compounds has important significance. Solving brittleness at room temperature is the key problem.
使用第一性原理和赝势方法研究了Ge_（50）Sn_（50）有序合金直到9 GPa压力下的能带结构和带隙的压力依赖性。
First principles and pseudopotential approaches have been used to investigate band structures and pressure dependence of the band-gaps of ordered zincblende Ge_(50)Sn_(50)alloy up to 9 GPa.
探讨了该合金有序相和微观组织对常温脆性的影响：结果表明。
The effect of ordered phases and microstructure on the brittleness of the alloy at room temperature was discussed.
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