The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.
Design of D022 superlattice with superior strengthening effect in high entropy alloys
Abstract
Abstract Precipitation strengthening is one of the most promising mechanisms to develop high-performance high entropy alloys (HEAs). However, the design of a reinforcing phase with an excellent strengthening effect is still one of the most pivotal challenges. In the present study, a design strategy based on overall valence electron concentration (OVEC) is developed, and a coherent D022 superlattice (noted as γ″ phase) with superior strengthening effect is designed. The newly developed γ″ phase is systematically characterized using transmission electron microscope and atom probe tomography. Differentiating from the traditional Ni3Nb γ″ phase, the present high-entropy γ″ phase contains ∼7.7% Co and follows the (Ni,Co,Cr,Fe)3(Nb,Fe) stoichiometry. Three γ″ phase variants are observed with crystallographic orientation relationships of [001]γ″// γ and (001)γ″//{100}γ. The lenticular γ″ particles with small volume fraction (7%) causes a significant yield strength increase (670 MPa) and ductility retention (40%), resulting in excellent yield strength-ductility combination. The excellent strengthening effect of the γ″ phase is attributed to both ordering strengthening and coherency strengthening. The present study proposes a new design strategy of precipitates and develops a superior reinforcing phase for HEAs. These findings will not only promote the development of precipitation-hardened HEAs but deepen the fundamentals of precipitates design for other complex concentrated alloys as well.
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Multicomponent intermetallic nanoparticles and superb mechanical behaviors of complex alloys
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Recent Advances on High‐Entropy Alloys for 3D Printing
Han, C., Fang, Q., Shi, Y., Tor, S. B., Chua, C. K., & Zhou, K. (2020) · Advanced Materials · doi:10.1002/adma.201903855 · Cited by 486
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Ostovari Moghaddam, A., Shaburova, N. A., Samodurova, M. N., Abdollahzadeh, A., & Trofimov, E. A. (2021) · Journal of Materials Science & Technology · doi:10.1016/j.jmst.2020.11.029 · Cited by 474
Metadata
- Authors
- He, F., Chen, D., Han, B., Wu, Q., Wang, Z., Wei, S., Wei, D., Wang, J., Liu, C. T., & Kai, J.-J.
- Venue
- Acta Materialia
- Publisher
- Elsevier BV
- Published
- 2019-04
- Volume
- 167
- Pages
- 275-286
- ISSN
- 1359-6454 (ISSN-L)
- OpenAlex
- W2913544741
- Cited by
- 322
- References
- 30
- FWCI
- 16.33
- Type
- journal article
- Language
- en
- Open access
- closed
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- He, F., Chen, D., Han, B., Wu, Q., Wang, Z., Wei, S., Wei, D., Wang, J., Liu, C. T., & Kai, J.-J. (2019). Design of D022 superlattice with superior strengthening effect in high entropy alloys. Acta Materialia. https://doi.org/10.1016/j.actamat.2019.01.048
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