Method for characterizing amorphous-crystal transformation kinetic characteristics by using high-energy X-rays
A technology of dynamic characteristics and X-rays, which is applied in the use of wave/particle radiation for material analysis, scientific instruments, measuring devices, etc., can solve problems such as the inability to analyze microscopic and atomic migration and diffusion laws
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[0027] The test adopts the atomic percentage as Zr 49 Cu 36 Al 8 be 7 of amorphous alloys.
[0028] a. Select the nominal composition (atomic percentage) as Zr 49 Cu 36 Al 8 be 7 The amorphous alloy is used as the object, and the bulk amorphous alloy of Φ5×100mm is obtained through vacuum arc melting (repeated smelting 5 times) and copper mold suction casting, and is cut into alloy samples of Φ5×0.5mm;
[0029] b. Place the sample in the high-energy X-ray (wavelength 0.01nm) diffraction optical path for ex-situ isothermal crystallization treatment, the processing temperature is 486°C, and the diffraction data collection frequency is 6min to obtain ex-situ radiation data, I M (2θ), see appendix figure 1 ;
[0030] c. Correct and convert the obtained diffraction data to obtain the alloy-to-alloy interference function I(Q) and structure factor function S(Q) (partial data), see attached figure 2 , and perform Fourier transform to obtain the reduced radial distribution f...
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