Influence of Nb content on mechanical behavior and microstructure of Ti–Nb alloys
| Autor: | Xuanli Wang, Shungui Zuo, Gaishi Wang, Jun Cao, Yuqi Zhang, Mingjiang Jin |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | International Journal of Materials Research. 113:205-213 |
| ISSN: | 2195-8556 1862-5282 |
| Popis: | The effect of Nb content on the mechanical behavior of Ti-(20, 25, 30) at.% Nb alloys has been investigated. Results show that the storage modulus, the tensile strength and elongation at room temperature decrease with increasing Nb content. The Ti-20Nb and Ti-25Nb alloys show double-yielding behavior and they exhibit higher work hardening rate than the Ti-30Nb alloy. The Ti-20Nb alloy deforms by stress-induced β → α″ transformation and the reorientation of the α″ phase. While the Ti-25Nb alloy deforms by stress-induced martensitic transformation and deformation bands that are devoid of ω phase. The Ti-30Nb alloy, which has the highest β phase stability, deforms in a localized mode mainly by dislocation slip. The “marble-like” deformation microstructure previously reported in “gum metal” was observed in severely deformed Ti-25Nb and Ti-30Nb alloys. |
| Databáze: | OpenAIRE |
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