Open AccessNanocrystal formation and structure rejuvenation in Al-based alloys
Author(s) -
Dmitrii V. Matveev,
Elena Pershina,
N. A. Volkov,
G. E. Abrosimova
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/672/1/012014
Subject(s) - nanocrystalline material , crystallization , materials science , amorphous solid , nanocrystal , phase (matter) , homogeneous , chemical engineering , amorphous metal , crystallography , nanotechnology , thermodynamics , chemistry , physics , organic chemistry , engineering
Studies of the structural evolution of the group of Al-based amorphous alloys of Al-Ni-RE (RE = La, Y, Gd) systems showed that, under the combined action of heat and deformation on the structure, one may obtain samples with different crystal sizes and different fractions of the nanocrystalline phase. Under crystallization of a heterogeneous amorphous phase, the size of the nanocrystals is smaller, and their fraction is larger than under crystallization of a homogeneous amorphous phase. The use of cryogenic cycling method allows rejuvenating the amorphous phase in partially crystalline alloys.