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Guangxi Sciences. 2010, (01)

Preparation and Crystallization of Amorphous Al65Fe10Zr20Gd5Chinese Full Text

TANG Cui-yong1,ZHAO Lei1,YAN Ying-lian1,LI zhi-qi1,CHEN Hong-mei1,OUYANG Yi-fang1,ZHONG Xia-ping2(1.College of Physics Science and Technology,Guangxi University,Nanning,Guangxi,530004,China;2.Guangxi Academy of Science,Nanning,Guangxi,530007,China)

Abstract: The amorphous Al65Fe10Zr20Gd5 alloy was successfully prepared by mechanical alloying.The microstructure evolution,phase transformation and thermal stability were investigated by X-ray diffraction technique,scanning electron microscopy and differential thermal analysis.The results show that the mixture powders were fully amorphized after milling for 60h.DTA results show that one exothermal peak during the crystallization of amorphous alloy.The production phases of crystallization for amorphous Al65Fe10Zr20Gd5 alloy,annealing at temperature 923K for one hour,composed of α-（Al） solid solution,Fe5Gd,Fe2Zr and Al2Gd3.The crystallization activation energy of the amorphous alloy estimated with the Kissinger equation is 259.64 kJ·mol-1.
Keywords：

alloy; mechanical alloying; Al65Fe10Zr20Gd5; amorphous alloy; thermal stability;

  • DOI：

    10.13656/j.cnki.gxkx.2010.01.020

  • Series：

  • Subject：

  • Classification Code：

    TG139.8

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