Pseudoelasticity
Pseudoelasticity, or sometimes called super elasticity, is an elastic response to relatively high stress caused by a phase transformation between the austenitic and martensitic phases of a crystal. It is exhibited in Shape Memory Alloys. Pseudoelasticity is from the reversible motion of domain boundaries during the phase transformation, rather than the introduction of defects in the crystal lattice. Even if the motion of domain boundaries is are pinned, it may be reversed through heating. Thus, a pseudoelastic material may return to its previous shape (hence, shape memory) when even relatively high applied strains are removed from the material.
References
- Toru Kamita and Yuji Matsuzaki. "One-dimensional pseudoelastic theory of shape memory alloys". Smart Mater. Struct. 7 (1998) 489–495. [1]
- Y. Yamada. "Theory of pseudoelasticity and the shape-memory effect". Phys. Rev. B Vol 46, No. 10. (1992) [2]