| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dilute Alloying and Impurity Effects on Phase Transformations
|
| Presentation Title |
Impact of Impurity Elements Introduced During Joining on the Properties of Superelastic Nitinol |
| Author(s) |
Zhaoxi Cao, Samuel Price, Ian Mccue |
| On-Site Speaker (Planned) |
Ian Mccue |
| Abstract Scope |
Joining of shape memory alloys (SMAs) has gained increased attention in recent years, due to their use in aerospace, transportation, and biomedical industries. However, traditional joining methods are challenging to apply to these materials because they lead to local weakening, formation of brittle intermetallics, and decreases in functional performance. Transient liquid phase (TLP) bonding is examined here as a viable solution because it can form dense joints without substantially altering the substrate’s composition. While TLP is commercially used to join critical components in aerospace, such as turbine blades, it remains unanswered whether this technique is applicable to SMAs. Solidification during TLP relies on the diffusion of a solute element into the substrate material. The solute element is typically only a few atomic percent – within design specs for most structural alloys but will substantially alter SMA properties. This talk will present several TLP compositions and their effect on SMA properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Joining, Mechanical Properties |