| Autor: |
Zhu, R. T., Wang, Z., Shi, X. H., Yang, H. J., Guo, X. T., Qiao, J. W. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 4/7/2022, Vol. 131 Issue 13, p1-11, 11p |
| Abstrakt: |
A Ti-based metallic glass matrix composite (MGMC), which contains abundant primary α′ and ω phases in dendrites, has a strong work-hardening ability. A significant martensitic transformation occurred during plastic deformation at 298 K, and deformation twins were produced at 77 K. Transformation-induced plasticity and twinning-induced plasticity enable MGMC to achieve prominent strength–plasticity synergy. At 298 K, the alloy exhibits a yield strength (YS) of 1140 MPa and a uniform elongation (UE) of 8.1%, while at 77 K, the YS increases to 1520 MPa, still maintaining a UE of 4.6%. The prediction models of the temperature dependent YS and martensite trigger stress (σ S I M ) in MGMC were established. The strengthening and toughening mechanisms provide a great theoretical guidance for the development of low-temperature high-performance MGMCs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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