In-situ synchrotron radiation characterization method for crystallization kinetic characteristics of amorphous alloy

Abstract

The invention relats to an in-situ synchrotron radiation characterization method for crystalline kinetic characteristics of an amorphous alloy, belonging to the technical field of nanocrystalline material preparation. Starting from the most fundamental atomic structure, a nanocrystalline formation process is combined with macroscopic production and preparation conditions, so that the analysis is more accurate and reliable.

Description

technical field

[0001] The invention belongs to the technical field of preparation of nanocrystalline materials, belongs to the technical field of amorphous alloys, and relates to a technical method for characterizing the nanocrystallization characteristics of amorphous alloys, in particular to an in-situ synchrotron radiation characterization of crystallization dynamics characteristics of amorphous alloys method. Background technique

[0002] Amorphous alloys are a new generation of metal materials with long-range disorder and short-range order structures. They have a series of excellent mechanical, physical and chemical properties that cannot be compared with traditional crystalline metal materials, such as high strength, high hardness, and extremely low temperature at room temperature. Large elastic limit and good formability in viscous state, etc., have broad application prospects in the fields of machinery, communication, automobile industry, aerospace and other fields,...

Examples

Embodiment

[0026] The test adopts the atomic percentage as Zr 48 Cu 36 Al 8 Ag 8 amorphous alloys.

[0027] a. Select the nominal composition (atomic percentage) as Zr 48 Cu 36 Al 8 Ag 8 Amorphous alloys of Φ5×100mm were obtained by vacuum arc melting (repeated smelting 5 times) and copper mold suction casting, and cut into alloy samples of Φ5×0.5mm;

[0028] b. Place the sample in the diffraction optical path of synchrotron radiation (wavelength 0.01nm) for in-situ isothermal crystallization treatment, the treatment temperature is 470°C, and the radiation data collection frequency is 6 minutes;

[0029] c. Correct and convert the obtained diffraction data to obtain the interference function I(Q) of the alloy, see attached figure 1 , each data point in the figure comes from the experimental data annealed every six minutes, and Fourier transform is performed to obtain the reduced radial distribution function G(r) and radial distribution function RDF(r), etc. See the attached image...

technical field

[0001] The invention belongs to the technical field of preparation of nanocrystalline materials, belongs to the technical field of amorphous alloys, and relates to a technical method for characterizing the nanocrystallization characteristics of amorphous alloys, in particular to an in-situ synchrotron radiation characterization of crystallization dynamics characteristics of amorphous alloys method. Background technique

[0002] Amorphous alloys are a new generation of metal materials with long-range disorder and short-range order structures. They have a series of excellent mechanical, physical and chemical properties that cannot be compared with traditional crystalline metal materials, such as high strength, high hardness, and extremely low temperature at room temperature. Large elastic limit and good formability in viscous state, etc., have broad application prospects in the fields of machinery, communication, automobile industry, aerospace and other fields,...

Examples

Embodiment

[0026] The test adopts the atomic percentage as Zr 48 Cu 36 Al 8 Ag 8 amorphous alloys.

[0027] a. Select the nominal composition (atomic percentage) as Zr 48 Cu 36 Al 8 Ag 8 Amorphous alloys of Φ5×100mm were obtained by vacuum arc melting (repeated smelting 5 times) and copper mold suction casting, and cut into alloy samples of Φ5×0.5mm;

[0028] b. Place the sample in the diffraction optical path of synchrotron radiation (wavelength 0.01nm) for in-situ isothermal crystallization treatment, the treatment temperature is 470°C, and the radiation data collection frequency is 6 minutes;

[0029] c. Correct and convert the obtained diffraction data to obtain the interference function I(Q) of the alloy, see attached figure 1 , each data point in the figure comes from the experimental data annealed every six minutes, and Fourier transform is performed to obtain the reduced radial distribution function G(r) and radial distribution function RDF(r), etc. See the attached image...

Images