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Complex crystallization mode of amorphous/nanocrystalline composite Al _(86)Ni_2Co_(5.8)Gd_(5.7)Si_(0.5)

机译:无定形/纳米晶复合材料Al _(86)Ni_2CO_(5.8)GD_(5.7)Si_(0.5)的复合结晶模式

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摘要

Kinetics of the first crystallization stage of Al_(86)Ni _2Co_(5.8)Gd_(5.7)Si_(0.5) amorphous alloy and structure of the partially crystallized specimens were investigated by measurements of electrical resistance, X-ray diffraction and transmission electron microscopy. The presence of Al nanocrystals and eutectic colonies consisted of mutually oriented crystals of Al and metastable phase was found. The transient nucleation and slowing-down diffusion-limited growth and the interface-controlled growth of the quenched-in nuclei were identified as mechanisms of formation of the Al nanocrystals and eutectic colonies, respectively.
机译:通过测量电阻,X射线衍射和透射电子显微镜研究,研究了AL_(86)Ni _2CO_(5.8)Gd_(5.8)的第一结晶阶段的动力学。 发现Al纳米晶体和共晶菌落的存在,由Al和亚稳态相的相互取向的晶体组成。 瞬时成核和减速扩散限制的生长和猝灭核的界面控制的生长分别被鉴定为形成Al纳米晶体和共晶菌落的机制。

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