In situ quantification of the micro mechanisms during tensile deformation for an outstanding high entropy alloy via neutron diffraction

DOI

Recently, high entropy alloy (HEA) concept has been studied as a means of achieving excellent properties of metallic alloys. We have developed an HEA alloy through powder metallurgy, which possesses both high strength and large ductility (as large as 70% at room temperature). However, currently the knowledge at the microstructural scale concerning the underpinning mechanisms during deformation are limited, especially with respect to the interaction between local strain hardening and grain defects (e.g. dislocation substructures and twins). In order to determine these, we proposed to use neutron diffraction to quantify the evolution of the lattice strain in situ during tensile deformation. The results in concert with ex situ electron microscopic characterizations currently undergoing, will provide a pathway for designing HEAs with both enhanced strength and superior ductility.

Identifier
DOI https://doi.org/10.5286/ISIS.E.79108741
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/79108741
Provenance
Creator Dr Saurabh Kabra; Professor PETER LEE; Dr Yiqiang Wang; Dr Kun Yan; Dr Biao Cai; Dr Bin Liu; Professor Yong Liu
Publisher ISIS Neutron and Muon Source
Publication Year 2019
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2016-04-30T08:00:00Z
Temporal Coverage End 2016-05-02T08:00:00Z