Amorphous aluminum alloys—synthesis and stability
Amorphous aluminum alloys—synthesis and stability
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DOI：
10.1007/bf02822618
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发表时间：
2002-03
期刊：
影响因子：
2.6
通讯作者：
J. Perepezko;R. Hebert
中科院分区：
文献类型：
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作者：
J. Perepezko;R. Hebert
最近在金属玻璃方面的创新导致了可能被玻璃化的新的合金类别，并重新审查了影响玻璃形成和稳定性的关键合金因素。新的合金类别通常至少是三元系，而且通常是更高的级数，可以分为两个一般类别。在一种情况下，较大的体积可以缓慢冷却到玻璃态，这意味着成核控制的合成。另一个重要的类别是铝基和铁基玻璃，这种玻璃可以通过快速凝固过程(如熔融纺丝)合成。这些玻璃通常被称为边缘玻璃，是在生长控制的动力学条件下合成的。这两种合金的玻璃也可以通过晶体多层阵列的强烈变形来合成。这些发展代表了对结构性能和稳定性产生影响的微观结构控制的主要水平。
Recent innovations in metallic glasses have led to new alloy classes that may be vitrified and a re-examination of the key alloying factors influencing glass formation and stability. The new alloy classes are usually at least ternary systems and often higher order that can be grouped into two general categories. In one case, large, bulk volumes may be slowly cooled to the glassy state, which signifies a nucleation controlled synthesis. The other important class is represented by aluminum- and iron-based glasses that can be synthesized by rapid solidification processes such as melt spinning. These glasses are often called marginal glass formers that are synthesized under growth-controlled kinetic conditions. Glasses in both alloy classes can also be synthesized by intense deformation of crystalline multilayer arrays. These developments represent a major level of microstructure control that has an impact on the structural performance and stability.