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首页> 外文期刊>Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties >Formation of metastable phases in Ni-43.5 at.% Mo powder mixtures during mechanical alloying and after heat treatment
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Formation of metastable phases in Ni-43.5 at.% Mo powder mixtures during mechanical alloying and after heat treatment

机译：机械合金化和热处理后在Ni-43.5 at。％Mo粉末混合物中形成亚稳态相

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Mechanical alloying of Ni-43.5 at.% Mo powder was performed with three different types of ball mill: high-energy vibrating-frame grinder, medium-energy vibrational mill and low-energy rotational mill. In all cases, the synthesized alloys exhibited an amorphous structure with some unreacted crystalline Mo. Additionally, a new phase has been formed after milling in vibrational and rotational devices. This phase has been described as bcc, with a lattice parameter a = 3.43 Angstrom. The differential scanning calorimetry (DSC) for these amorphous alloys exhibited two exothermic features. The low-temperature effect has been attributed to the crystallization process of the amorphous phase. The second DSC thermal effect found at higher temperatures has been attributed to subsequent phase transformations resulting in a new phase defined as fee with a lattice parameter in the range 10.954-11.098 Angstrom, depending on the mill employed. The existence of a supersaturated Ni(Mo) solid solution in the structure of the heated samples has also been confirmed.
机译：Ni-43.5 at。Mo粉末的机械合金化是通过三种不同类型的球磨机进行的：高能振动机架研磨机，中能振动研磨机和低能旋转研磨机。在所有情况下，合成合金均表现出具有一些未反应的结晶Mo的非晶态结构。此外，在振动和旋转装置中研磨后，形成了新相。该相已被描述为bcc，晶格参数a = 3.43埃。这些非晶态合金的差示扫描量热法（DSC）表现出两个放热特征。低温效应归因于非晶相的结晶过程。在较高温度下发现的第二个DSC热效应归因于随后的相变，这导致新相定义为晶格参数在10.954-11.098埃范围内的费，具体取决于所使用的轧机。加热样品的结构中还存在过饱和的Ni（Mo）固溶体。

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