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Effect of Stoichiometry on Shape Memory Properties of Ti-Ni-Hf-Cu-Nb Shape Memory Alloys Manufactured by Suspended Droplet Alloying
| Content Provider | MDPI |
|---|---|
| Author | Li, Sheng Wang, Minshi Essa, Khamis Gan, Chunlei Liu, Chunyan Attallah, Moataz |
| Copyright Year | 2022 |
| Description | A novel Ti-Ni-Hf-Cu-Nb shape memory alloy has been developed by a new combinatorial alloy synthesis method, the Suspended Droplet Alloying. The influence of alloying elements on the transformation temperature, the microstructure and the shape memory effect of this alloy have also been studied. It was found that Cu has a greater negative influence on the transformation temperature of $Ti-Ni-Hf-Cu_{X}$ alloys (about −5 K/at.%) than on the $Ti-Ni-Cu_{X}$ alloys (−0.67 K/at.%). In addition, the negative effect intensifies with increasing Hf content. The transformation temperature rapidly decreases with increasing Nb composition in the Ti-Ni-Cu-Nb and Ti-Ni-Hf-Cu-Nb alloys, with the solid solution of Nb in the matrix being 1 at.%. A Ti-Ni-Cu-Hf-Nb alloy with high thermal cycle stability has been developed, where the alloying elements affect the transformation behaviour via altering the slipping energy and forming different types of precipitations. |
| e-ISSN | 26736497 |
| DOI | 10.3390/solids3010001 |
| Journal | Solids |
| Issue Number | 1 |
| Volume Number | 3 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-05 |
| Access Restriction | Open |
| Subject Keyword | Solids Manufacturing Engineering Martensitic Transformation Shape Memory Alloys Ti-ni-hf-cu-nb Alloys Microstructure |
| Content Type | Text |
| Resource Type | Article |
