Microstructures and Mechanical Properties of Al-Ti-Zr-Nb-Ta-Mo-V Refractory High-Entropy Alloys with Coherent B2 Nanoprecipitation
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussions
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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No. | Nominal Formula (Composition in at. %) | Phase Constitutions | a (nm) | ε (%) | r (nm) | σYS (MPa) |
---|---|---|---|---|---|---|
S0 | Al2Ti4Zr4Nb3Ta3 Al12.5Ti25.0Zr25.0Nb18.75Ta18.75 | BCC + B2 + Zr5Al3 | aBCC = 0.3298 aB2 = 0.3390 | εBCC1/B2 = 2.75 | 20~35 | 1400 |
S1 | Al2Ti4Zr4Nb5Ta1 Al12.5Ti25.0Zr25.0Nb31.25Ta6.25 | BCC1 + BCC2 + B2+ Zr5Al3 | aBCC1 = 0.3391 aBCC1 = 0.3439 aB2 = 0.3462 | εBCC1/B2 = 2.07 εBCC2/B2 = 0.67 | 25~55 | 1125 |
S2 | Al2Ti4Zr4Nb3Ta2V0.5Mo0.5Al12.5 Ti25.0Zr25.0Nb18.75Ta12.5 V3.125Mo3.125 | BCC + B2 + Zr5Al3 | aBCC = 0.3294 aB2 = 0.3327 | εBCC1/B2 = 1.00 | 25~45 | 1150 |
S3 | Al2Ti5Zr4Nb2.5Ta2.5 Al12.5Ti31.25Zr25.0Nb15.625Ta15.625 | BCC1 + BCC 2 + B2 + Zr5Al3 | aBCC1 = 0.3352 aBCC2 = 0.3307 aB2 = 0.3377 | εBCC1/B2 = 2.09 εBCC2/B2 = 0.74 | 25~50 | 1232 |
Heat Treatment | Phase Constitution | Elemental Composition in Phase (at. %) | ||||
---|---|---|---|---|---|---|
Al | Nb | Ta | Ti | Zr | ||
873 K/24 h | BCC1 | 5.4 ± 1.3 | 9.1 ± 2.6 | 2.2 ± 1.0 | 53.0 ± 4.5 | 30.3 ± 0.4 |
BCC2 | 7.9 ± 2.7 | 26.0 ± 2.5 | 22.6 ± 1.7 | 33.4 ± 2.0 | 10.1 ± 1.2 | |
B2 | 30.0 ± 1.2 | 12.7 ± 0.7 | 2.4 ± 0.7 | 21.4 ± 3.5 | 33.5 ± 3.0 | |
Zr5Al3 | 39.4 ± 2.3 | 11.1 ± 1.5 | 1.5 ± 0.5 | 9.1 ± 3.1 | 38.9 ± 0.7 |
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Wang, Z.; Jin, D.; Han, J.; Wang, Q.; Zhang, Z.; Dong, C. Microstructures and Mechanical Properties of Al-Ti-Zr-Nb-Ta-Mo-V Refractory High-Entropy Alloys with Coherent B2 Nanoprecipitation. Crystals 2021, 11, 833. https://doi.org/10.3390/cryst11070833
Wang Z, Jin D, Han J, Wang Q, Zhang Z, Dong C. Microstructures and Mechanical Properties of Al-Ti-Zr-Nb-Ta-Mo-V Refractory High-Entropy Alloys with Coherent B2 Nanoprecipitation. Crystals. 2021; 11(7):833. https://doi.org/10.3390/cryst11070833
Chicago/Turabian StyleWang, Zhenhua, Dongming Jin, Jincan Han, Qing Wang, Zhongwei Zhang, and Chuang Dong. 2021. "Microstructures and Mechanical Properties of Al-Ti-Zr-Nb-Ta-Mo-V Refractory High-Entropy Alloys with Coherent B2 Nanoprecipitation" Crystals 11, no. 7: 833. https://doi.org/10.3390/cryst11070833
APA StyleWang, Z., Jin, D., Han, J., Wang, Q., Zhang, Z., & Dong, C. (2021). Microstructures and Mechanical Properties of Al-Ti-Zr-Nb-Ta-Mo-V Refractory High-Entropy Alloys with Coherent B2 Nanoprecipitation. Crystals, 11(7), 833. https://doi.org/10.3390/cryst11070833