Formation of Nanostructured Ni-TaC and Fe-TaC Composite Powders via Mechanical Alloying

E-ISSN： 1662-9779|2016|257|179-182

ISSN： 1012-0394

Source： Solid State Phenomena, Vol.2016, Iss.257, 2017-01, pp. : 179-182

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Abstract

In this study, mixtures of 25 wt.% of tantalum carbide (TaC) and iron (Fe) or nickel (Ni) powders were mechanical alloyed against time in order to investigate the interactions between the reinforcement (harder TaC particles) and surrounding ductile metallic matrixes (Fe and Ni). After mechanical alloying, apparent densities and particle size and distribution (PSD) of the powders were measured and morphological observations were realized via scanning electron microscopy (SEM). X-ray diffraction (XRD) was applied for phase analysis and with increasing mechanical alloying time certain shifts were observed for the two theta values of the samples. These data used for characterization of strain rates and crystallite sizes by fundamentals parameters approach applied with Lorentzian function and Williamson-Hall plot analysis.