Investigation of amorphous alloys nanostructure and phase composition formed during integrated and split exposure of deformation and flash lamp annealing

Fourth interdisciplinary scientific forum with international participation "New materials and promising technologies"

Bakhteeva, N.D.^1 ; Todorova, E.V.^1 ; Kannykin, S.V.^2

Inst. of Russian Academy of Sciences A.A. Baikov Institute of Metallurgy and Material Science RAS, Leninsky av., Moscow

49, Russia^1

Voronezh State University, Universitetskaya sq. 1, Voronezh, Russia^2

关键词: Amorphous structures;    AND splits;    Flash lamp annealing;    Severe plastic deformations;    Static recrystallization;    Structural component;    Transmission electronic microscopies;    X ray structural analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/525/1/012069/pdf
DOI  :  10.1088/1757-899X/525/1/012069

来源: IOP

【 摘 要 】

Microstructure and phase composition of the Al85Ni7Fe4La4 amorphous alloy after separate and complex impacts of severe plastic deformation by shift under the pressure (SPD) with P=8 GPa, n=1-3 revolutions and flash lamp annealing (FLA) with the fluence F=10-25 J/cm2 were investigated. By X-ray structural analysis and transmission electronic microscopy (TEM) was shown, that in initially amorphous structure partial multiphase crystallization with formation of amorphousnanocrystalline composite (solid solution of crystalline Alcr and amorphous Alam and Al11La3, Al9(Fe, Ni)2 in aluminum) is developing during the SPD. FLA leads to partial nanocrystallization at F=10 J/cm2 and full crystallization after the FLA at 20-25 J/cm2. Phase transformation and static recrystallization processes are developed along with the crystallization in amorphous structural component at SPD and FLA integrated exposure.