Ultra-high tensile strength nanocrystalline CoCrNi equi-atomic medium entropy alloy processed by high-pressure torsion

A nanocrystalline CoCrNi alloy of ~50 nm grain size with the ultra-high ultimate tensile strength of ~2.2 GPa and fracture strain of ~9% was fabricated using high-pressure torsion. The presence of high density of nano-twins, stacking faults, dislocations, and nano-grains is attributed to the superio...

Full description

Saved in:
Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2018-09, Vol.735, p.394-397
Main Authors: Praveen, S., Bae, Jae Wung, Asghari-Rad, Peyman, Park, Jeong Min, Kim, Hyoung Seop
Format: Article
Language:English
Subjects:
Alloys
Dislocation density
Entropy
High entropy alloys
High-pressure torsion
Mechanical properties
Medium entropy alloys
Nano-grains
Nano-twins
Nanocrystals
Stacking faults
Tensile strength
Torsion
Ultimate tensile strength
Ultra-high tensile strength
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 nanocrystalline CoCrNi alloy of ~50 nm grain size with the ultra-high ultimate tensile strength of ~2.2 GPa and fracture strain of ~9% was fabricated using high-pressure torsion. The presence of high density of nano-twins, stacking faults, dislocations, and nano-grains is attributed to the superior mechanical properties.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2018.08.079