IN SITU OBSERVATION ON DYNAMIC CRYSTALLIZATION IN AMORPHOUS Ni-P ALLOY FOIL

Acta Metall Sin

1991, Vol. 27

Issue (1): 108-114 DOI:

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IN SITU OBSERVATION ON DYNAMIC CRYSTALLIZATION IN AMORPHOUS Ni-P ALLOY FOIL

LU Ke;WANG Jingtang National Laboratory for RSA; Institute of Metal Research; Academia Sinica. Shenyang; DONG Lin Liaoning Provincial Centre of Analysis and Testing Research. Shenyang

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LU Ke;WANG Jingtang National Laboratory for RSA; Institute of Metal Research; Academia Sinica. Shenyang; DONG Lin Liaoning Provincial Centre of Analysis and Testing Research. Shenyang. IN SITU OBSERVATION ON DYNAMIC CRYSTALLIZATION IN AMORPHOUS Ni-P ALLOY FOIL. Acta Metall Sin, 1991, 27(1): 108-114.

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Abstract A technique for in situ heating TEM observation of the dynamiccrystallization process of amorphous Ni-P alloy foils is described. During isothermally annealing at medium temperatures, the fine ordered clusters were firstly ap-peared in the amorphous matrix, and the microcrystalline particles formed withrandom orientations, then crystals grew. In the process of crystal growth, thesemicrocrystalline particles deposited directly onto the crystals front by shearing (i. e.changing their orientations) with their configuratures unalterated. By means ofvideo camera, the "step-shaped" growth, correspnding to the ordered clusters shear-ing deposition, was found after measurement of crystal growing. With the shear-ing deposition under different temperatures, the rate change of crystal growthseemed to be different.

Key words: amorphous alloy dynamic crystallization in situ TEM observation shearing deposition crystal growth

Received: 18 January 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I1/108

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