Microstructure and magnetic properties evolution of Al/CoCrFeNi nanocrystalline high-entropy alloy composite

A systematic microstructure-oriented magnetic property investigation for Al/CoCrFeNi nanocrystalline high-entropy alloys composite (nc-HEAC) is presented. In the initial state, the Al/CoCrFeNi nc-HEAC is composed of face-centered cubic (FCC)-Al, FCC-CoCrFeNi and hexagonal close-packed (HCP)-CoNi pha...

Full description

Saved in:
Bibliographic Details
Published in:Rare metals 2022-06, Vol.41 (6), p.2038-2046
Main Authors: Wang, Jun-Jie, Kou, Zong-De, Fu, Shu, Wu, Shang-Shu, Liu, Si-Nan, Yan, Meng-Yang, Wang, Di, Lan, Si, Hahn, Horst, Feng, Tao
Format: Article
Language:English
Subjects:
Biomaterials
Body centered cubic lattice
Chemistry and Materials Science
Energy
Evolution
Face centered cubic lattice
Heat treatment
High entropy alloys
High resolution electron microscopy
Intermetallic phases
Low temperature
Magnetic properties
Materials Engineering
Materials Science
Metallic Materials
Microstructure
Nanocomposites
Nanocrystals
Nanoscale Science and Technology
Original Article
Phase transitions
Physical Chemistry
Synchrotron radiation
Synchrotrons
Thermal diffusion
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A systematic microstructure-oriented magnetic property investigation for Al/CoCrFeNi nanocrystalline high-entropy alloys composite (nc-HEAC) is presented. In the initial state, the Al/CoCrFeNi nc-HEAC is composed of face-centered cubic (FCC)-Al, FCC-CoCrFeNi and hexagonal close-packed (HCP)-CoNi phases. High energy synchrotron radiation X-ray diffraction and high-resolution transmission electron microscopy were used to reveal the relationship between microstructure evolution and magnetic mechanism of Al/CoCrFeNi nc-HEAC during heat treatment. At low-temperature annealing stage, the magnetic properties are mainly contributed by the HCP-CoNi phase. With the increase of temperature, the diffusion-induced phase transition process including the transformation of AlCoCrFeNi HEA from FCC to BCC structure and the growth of B2 phase plays a dominant role in the magnetic properties. It was found that the magnetic properties can be effectively regulated through the control of the thermal diffusion process. The nano dual-phase thermal diffusion-induced phase transition behavior of nanocomposites prepared based on laser-IGC technology provides guidance for the diffusion process and microstructure evolution of two phases in composites. Graphical abstract
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-021-01931-w