Influence of hydrogen on incipient plasticity in CoCrFeMnNi high-entropy alloy

Title
Influence of hydrogen on incipient plasticity in CoCrFeMnNi high-entropy alloy
Authors
서진유양광휘조아개이동현박정민석무영라마무티장재일
Issue Date
2019-03
Publisher
Scripta materialia
Citation
VOL 161-27
Abstract
The influence of hydrogen on the onset of plastic deformation in a CoCrFeMnNi high-entropy alloy (HEA) was examined through the analysis of the load at which first pop-in during spherical nanoindentation experiments occurs on hydrogen-charged and subsequently aged specimens. Results reveal that the dissolved hydrogen lowers the plastic flow resistance, indicated by the shear yield strength, τy, by modifying defect formation energies. Aging, subsequent to charging, leads to recovery of τy, but only partially. The results are discussed in terms of the vacancy-mediated dislocation nucleation, which is supported by the estimated activation volume for deformation.
URI
http://pubs.kist.re.kr/handle/201004/69545
ISSN
1359-6462
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE