English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Shear band-driven precipitate dispersion for ultrastrong ductile medium-entropy alloys

Jang, T. J., Choi, W. S., Kim, D. W., Choi, G., Jun, H., Ferrari, A., et al. (2021). Shear band-driven precipitate dispersion for ultrastrong ductile medium-entropy alloys. Nature Communications, 12(1): 4703. doi:10.1038/s41467-021-25031-6.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
Shear band-driven precipitate dispersion for ultrastrong ductile medium-entropy alloys - s41467-021-25031-6.pdf (Publisher version), 5MB
Name:
Shear band-driven precipitate dispersion for ultrastrong ductile medium-entropy alloys - s41467-021-25031-6.pdf
Description:
Open Access
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2021
Copyright Info:
The Author(s)

Locators

show

Creators

show
hide
 Creators:
Jang, Tae Jin1, Author              
Choi, Won Seok2, Author              
Kim, Dae Woong3, Author              
Choi, Gwanghyo4, Author              
Jun, Hosun5, Author              
Ferrari, Alberto6, Author              
Körmann, Fritz7, 8, Author              
Choi, Pyuck-Pa9, Author              
Sohn, Seok Su10, Author              
Affiliations:
1Department of Materials Science and Engineering Korea University, Seoul, South Korea, ou_persistent22              
2Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea, ou_persistent22              
3Center for High Entropy Alloys Pohang University of Science and Technology, Pohang, South Korea, ou_persistent22              
4Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology, Daejeon, South Korea, ou_persistent22              
5Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea, ou_persistent22              
6Materials Science and Engineering, Delft University of Technology, Delft, 2628CD, The Netherlands, ou_persistent22              
7Computational Phase Studies, Computational Materials Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863341              
8Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands, ou_persistent22              
9Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea, ou_persistent22              
10Department of Materials Science and Engineering, Korea University, Seoul, 02841, South Korea, ou_persistent22              

Content

show
hide
Free keywords: alloy; ductility; entropy; metallurgy; nucleation
 Abstract: Precipitation strengthening has been the basis of physical metallurgy since more than 100 years owing to its excellent strengthening effects. This approach generally employs coherent and nano-sized precipitates, as incoherent precipitates energetically become coarse due to their incompatibility with matrix and provide a negligible strengthening effect or even cause brittleness. Here we propose a shear band-driven dispersion of nano-sized and semicoherent precipitates, which show significant strengthening effects. We add aluminum to a model CoNiV medium-entropy alloy with a face-centered cubic structure to form the L21 Heusler phase with an ordered body-centered cubic structure, as predicted by ab initio calculations. Micro-shear bands act as heterogeneous nucleation sites and generate finely dispersed intragranular precipitates with a semicoherent interface, which leads to a remarkable strength-ductility balance. This work suggests that the structurally dissimilar precipitates, which are generally avoided in conventional alloys, can be a useful design concept in developing high-strength ductile structural materials. © 2021, The Author(s).

Details

show
hide
Language(s):
 Dates: 2021-08-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41467-021-25031-6
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 (1) Sequence Number: 4703 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723