Synthesis and characterization of nano-structured Cu–Zn γ-brass alloy
作者： N.K. Mukhopadhyay , D. Mukherjee , S. Bera , I. Manna , R. Manna
DOI: 10.1016/J.MSEA.2007.10.039
关键词: Metallurgy 、 Microstructure 、 Crystallite 、 Amorphous solid 、 Materials science 、 Alloy 、 X-ray crystallography 、 Transmission electron microscopy 、 Nano- 、 Intermetallic 、 Mechanical engineering 、 General Materials Science 、 Mechanics of Materials 、 Condensed matter physics
摘要: Abstract In the present investigation, γ-Cu 5 Zn 8 intermetallic compound having an electron to atom ratio of about 21:13 and being structurally one most complex Hume–Rothery phases was selected for mechanical milling/alloying. The detailed characterization carried out by X-ray diffraction transmission microscopy study microstructural evolution stability during synthesis processing. Attempts have been made explore possibility formation nano-structured amorphous milling provide a thermodynamic explanation based on existing semi-empirical model. It found that γ-phase is quite stable there decrease in crystallite size up ∼20 nm with increase milling/alloying duration 40 h. However, amorphization could not be achieved even after 40 h milling. Detailed Miedema calculation showed would possible if can below certain critical value.
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