Parallel preparation of multi-component alloys with composition gradient distribution and their nonlinear microstructures and mechanical properties

Designing the precise composition with high performance remains a challenge for multi-component alloys (MCAs). In this work, we carry out a new high-throughput synthesis method for Zr-Al-Ti-V-Cr MCAs, and amounts of independent specimens with gradient compositions are prepared in parallel at one tim...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2022-11, Vol.921, p.166159, Article 166159
Main Authors: Wang, Tian-Li, Khan, Muhammad Abubaker, Feng, Chuang-Shi, Lin, Man-Zhen, Yasin, Ghulam, Liao, Wei-Bing
Format: Article
Language:English
Subjects:
Amorphous structure
Chemical composition
Composite structures
Gradient composition
High entropy alloys
Mechanical behaviour
Mechanical properties
Microstructure
Modulus of elasticity
Multi-component alloys
Nanocrystals
Nanohardness
Parallel preparation
Titanium
Zirconium
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:Designing the precise composition with high performance remains a challenge for multi-component alloys (MCAs). In this work, we carry out a new high-throughput synthesis method for Zr-Al-Ti-V-Cr MCAs, and amounts of independent specimens with gradient compositions are prepared in parallel at one time. Their microstructures and mechanical properties are investigated. It’s found that the specimen’s structure transforms from fully amorphous to composite structures with amorphous and bcc-structured nanocrystals with increasing Zr content. The specimen with a composition of Zr84Al4Ti4V3Cr5 is screened out to possess the highest nanohardness of ~ 5.91 GPa and elastic modulus of ~ 120.33 GPa, which is attributed to its amorphous structure wrapped with tiny nanocrystals. Interestingly, it shows nonlinear relationships between the chemical composition, microstructures, and mechanical properties, and the specimens with low mixed entropy present high nanohardness and elastic modulus compared to those with high mixed entropy. This work provides a clue for the parallel development of MCAs with excellent performance. •Sixteen independent specimens of the Zr-Al-Ti-V-Cr alloy system were prepared by masking co-sputtering technology.•The Zr-Al-Ti-V-Cr structure shows composite structures with amorphous and nanocrystals.•The Zr84Al4Ti4V3Cr5 has the highest nanohardness and elastic modulus due to its composite structures.•The specimens with low mixed entropy present high nanohardness and elastic modulus.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2022.166159