Theory-guided design of high-entropy alloys with enhanced strength-ductility synergy
Abstract
Abstract Metallic alloys have played essential roles in human civilization due to their balanced strength and ductility. Metastable phases and twins have been introduced to overcome the strength-ductility tradeoff in face-centered cubic (FCC) high-entropy alloys (HEAs). However, there is still a lack of quantifiable mechanisms to predict good combinations of the two mechanical properties. Here we propose a possible mechanism based on the parameter κ, the ratio of short-ranged interactions between closed-pack planes. It promotes the formation of various nanoscale stacking sequences and enhances the work-hardening ability of the alloys. Guided by the theory, we successfully designed HEAs with enhanced strength and ductility compared with other extensively studied CoCrNi-based systems. Our results not only offer a physical picture of the strengthening effects but can also be used as a practical design principle to enhance the strength-ductility synergy in HEAs.
- Authors:
- Publication Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- OSTI Identifier:
- 1972247
- Alternate Identifier(s):
- OSTI ID: 1988288
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Name: Nature Communications Journal Volume: 14 Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; mechanical properties; metals and alloys
Citation Formats
Pei, Zongrui, Zhao, Shiteng, Detrois, Martin, Jablonski, Paul D., Hawk, Jeffrey A., Alman, David E., Asta, Mark, Minor, Andrew M., and Gao, Michael C. Theory-guided design of high-entropy alloys with enhanced strength-ductility synergy. United Kingdom: N. p., 2023.
Web. doi:10.1038/s41467-023-38111-6.
Pei, Zongrui, Zhao, Shiteng, Detrois, Martin, Jablonski, Paul D., Hawk, Jeffrey A., Alman, David E., Asta, Mark, Minor, Andrew M., & Gao, Michael C. Theory-guided design of high-entropy alloys with enhanced strength-ductility synergy. United Kingdom. https://doi.org/10.1038/s41467-023-38111-6
Pei, Zongrui, Zhao, Shiteng, Detrois, Martin, Jablonski, Paul D., Hawk, Jeffrey A., Alman, David E., Asta, Mark, Minor, Andrew M., and Gao, Michael C. Tue .
"Theory-guided design of high-entropy alloys with enhanced strength-ductility synergy". United Kingdom. https://doi.org/10.1038/s41467-023-38111-6.
@article{osti_1972247,
title = {Theory-guided design of high-entropy alloys with enhanced strength-ductility synergy},
author = {Pei, Zongrui and Zhao, Shiteng and Detrois, Martin and Jablonski, Paul D. and Hawk, Jeffrey A. and Alman, David E. and Asta, Mark and Minor, Andrew M. and Gao, Michael C.},
abstractNote = {Abstract Metallic alloys have played essential roles in human civilization due to their balanced strength and ductility. Metastable phases and twins have been introduced to overcome the strength-ductility tradeoff in face-centered cubic (FCC) high-entropy alloys (HEAs). However, there is still a lack of quantifiable mechanisms to predict good combinations of the two mechanical properties. Here we propose a possible mechanism based on the parameter κ, the ratio of short-ranged interactions between closed-pack planes. It promotes the formation of various nanoscale stacking sequences and enhances the work-hardening ability of the alloys. Guided by the theory, we successfully designed HEAs with enhanced strength and ductility compared with other extensively studied CoCrNi-based systems. Our results not only offer a physical picture of the strengthening effects but can also be used as a practical design principle to enhance the strength-ductility synergy in HEAs.},
doi = {10.1038/s41467-023-38111-6},
journal = {Nature Communications},
number = 1,
volume = 14,
place = {United Kingdom},
year = {Tue May 02 00:00:00 EDT 2023},
month = {Tue May 02 00:00:00 EDT 2023}
}
https://doi.org/10.1038/s41467-023-38111-6
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