Abstract
The ordered f c c intermetallic compound Ni3Si was mechanically milled in a high-energy ball mill. The severe plastic deformation produced by milling induced transformations with increasing milling time as follows: ordered f c c → disordered f c c → nanocrystalline f c c. The structural and microstructural evolution with milling time was followed by X-ray diffraction, TEM, hardness tests, and differential scanning calorimetry (DSC). Complete disordering occurred at milling times of 2 h and kept the saturated ΔH of the DSC peak in the range of estimated enthalpy even after 60 h milling. The structural development during milling of the f c c solid solution for Ni3Si was presumably dominated by the formation and refinement of a dislocation cell structure into microcrystallites which eventually reached nanometre dimensions.
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Jang, J.S.C., Tsau, C.H. Disordering of the Ni3Si intermetallic compound by mechanical milling. Journal of Materials Science 28, 982–988 (1993). https://doi.org/10.1007/BF00400883
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DOI: https://doi.org/10.1007/BF00400883