High-Entropy Ti45Zr5Pt19Pd25Co6 High-Temperature Shape Memory Alloy with Improved Functional Stability Through In-Service Dislocation Recovery
Abstract
This study investigates a Ti 45 Zr 5 Pt 19 Pd 25 Co 6 high-temperature shape memory alloy designed for functional stability through high-entropy strengthening and temperature-enabled dislocation recovery. Cyclic testing confirms better stability when the service temperature was extended to 500 °C compared to 400 °C. While 400 °C operation induces instability from dislocations, 500 °C promotes dislocation recovery, as evidenced by cyclic superelastic and microhardness tests. This demonstrates that strategic temperature selection can enhance the longevity of high-temperature high-entropy shape memory alloys.
Fields of Study & Subjects
Shape Memory Alloy Transformations
Titanium Alloys Microstructure and Properties
Intermetallics and Advanced Alloy Properties
Publication details
- Journal / source
- Metallurgical and Materials Transactions A
- Publisher
- Springer Science and Business Media LLC
- Volume
- 57
- Issue
- 6
- Pages
- 2495–2501
- Publication date
- 21 April 2026
- Language
- EN