Ternary Element Effects of Nb and V Additives on the Low-Temperature Wear Behavior of NiTi-Based Shape Memory Alloys
Journal of Materials Engineering and Performance, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s11665-026-13921-z
- Dergi Adı: Journal of Materials Engineering and Performance
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Chemical Abstracts Core, Compendex, INSPEC, Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: low temperature sliding, NiTi, nitinol, shape memory alloy, wear
- Ondokuz Mayıs Üniversitesi Adresli: Evet
Özet
In this study, three different types of composite powders, NiTi, NiTiNb (20 wt.% Nb), and NiTiV (20 wt.% V), were produced using ball milling. The samples were then obtained using the P/M process. Dry sliding wear tests of the samples were performed at 23 and − 40 °C. The results showed that the binary NiTi sample exhibited considerably greater surface damage at − 40 °C than at room temperature. The least wear surface damage occurred in the NiTiV sample at both ambient temperatures. It was determined that adding 20 wt.% of Nb and V increased hardness to 695 and 818 HV, respectively. When the calculated wear volume loss values were examined, it was determined that NiTi and NiTiV alloys wore more at − 40 °C compared to room temperature. In NiTiNb, however, very similar wear values were obtained at RT and − 40 °C, which was explained by the Nb additive suppressing the Ms transformation and protecting the austenite phase. Besides, the wear volume loss values of the Nb- and V-added samples decreased to approximately 1/6 of those of the binary NiTi sample at an ambient temperature of − 40 °C. Overall, the COF values at − 40 °C for all samples were higher than those at room temperature.