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FORMATION OF AMORPHOUS Al_(80)Fe_(20)BY MECHANICAL ALLOYING

Keywords: mechanical alloying,amorphization,Al-Fe amorphous alloy,M(?)ssbauer spectrum analysis

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Abstract:

Amorphous Al_(80)Fe_(20) powder which can hardly be obtained using conventional rapid quenching technique was directly prepared from crystalline Fe and A1 powders by means of mechanical alloying process.The amorphization process was examined by X-ray analysis and Mssbauer spectroscopy,and the thermal behaviour was studied by DSC.The results show that the rate of amorphization is controlled by the diffusion reaction at the interfaces and changes with the milling time.The effect of milling conditions on amorphization by mechanical alloying was al- so investigated.

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