| Autor: |
Cai, S., Schaffer, J. E., Ren, Y. |
| Zdroj: |
Shape Memory and Superelasticity; December 2023, Vol. 9 Issue: 4 p593-600, 8p |
| Abstrakt: |
Phase transformations and mechanical properties of NiTiMo alloys were studied. It was found that (1) solubility limit of Mo in NiTi at 1000 °C is less than ~ 2 at.%. Additional Mo results in a Mo-rich phase with a bcccrystal structure. (2) Mo significantly suppresses martensite transformation, but promotes the formation of R-phase; (3) Phase transformation temperatures increase with increasing valence electron concentration (Cv); (4) Mo appears to have very limited solid solution strengthening effect in NiTi alloys. Although Mo increases the austenite stability, it decreases the materials’ superelasticity by encouraging plastic deformation during stress-induced martensite transformation while also decreasing ductility. This study found no obvious benefit of Mo addition in the NiTi system to mechanical and superelastic properties of ternary alloys. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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