Neutron Diffraction Characterization of Crystallization Kinetic Properties of Bulk Amorphous Alloys
A technology of kinetic properties and amorphous alloys, applied in the characterization of nanocrystallization characteristics of bulk amorphous alloys, neutron diffraction characterization of crystallization kinetic properties of bulk amorphous alloys, can solve the problem of inability to analyze microscopic crystallization Mechanism and the law of atomic migration and diffusion
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[0026] The test adopts the atomic percentage as Zr 48 Cu 36 al 8 be 7 bulk amorphous alloys.
[0027]a. Select the nominal composition as Zr 48 Cu 36 Al 8 be 7 (at.%) bulk amorphous alloy as the object, obtained Φ5×100mm bulk amorphous alloy through vacuum arc melting (repeated smelting 5 times) and copper mold suction casting, and cut into Φ5×5mm alloy samples;
[0028] b. Place the sample in the neutron diffraction (wavelength 0.01nm) diffraction optical path for ex-situ isothermal crystallization treatment, the treatment temperature is 486°C, and the radiation data collection frequency is 3min;
[0029] c. For the obtained diffraction data (see attached figure 1 , the figure is an example of in-situ neutron diffraction data with heat treatment time of 3min (a) and 54min (b) respectively) for correction and conversion to obtain the interference function I(Q) of the alloy (partial data), see attached figure 2 , the data points in the figure come from the experimenta...
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