Phenomenon · phenomenon:thermally-driven-shape-memory-effect
Thermal shape-memory effect
Heating a deformed shape-memory alloy through its martensite–austenite transformation recovers strain and exerts large stress; cycling between a hot and a cold reservoir gives cyclic mechanical motion (the reservoirs are needed for heat-engine operation, not for a single recovery event).
Atlas record: 6 claims reference this phenomenon — 5 established and 1 demonstrated.
Explorerelations · matrix context · routes · sources · cite
conditions: solid
6claims26enumerated routes2routes with complete-composition evidence5candidate routes not searched3cited sources
Relations
drives · 1
- a shape-memory alloy (NiTi) cycled between a hot reservoir above its austenite finish temperature and a cold one below its martensite finish temperature, under load
produces · 1
member of · 1
implemented by · 1
bounded by · 1
- applies when the shape-memory effect is operated cyclically as a heat engine between hot and cold reservoirs; it does not bound a one-shot thermally triggered shape-recovery event
observed in · 1
Matrix context
D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.
Enumerated routes through this · 26 (showing 24)
- Shape-memory heat engine (mechanical)3/3 est · demonstrated
- Shape-memory alloy heat engine5/5 est · demonstrated
- Temperature gradient → Thermal shape-memory effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work5/5 est · extends a recorded pathway
- Chemical potential difference → Combustion → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
- Electric potential difference → Peltier effect → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
- Electric potential difference → Ettingshausen effect → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
- Incident radiation flux → Photothermal absorption → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
- Radiative imbalance with the sky → Radiative sky cooling → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
- Nuclear binding-energy difference → Nuclear fission → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
- Nuclear binding-energy difference → Nuclear fusion → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work3/5 est · extends a recorded pathway
- Chemical potential difference → Combustion → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work7/7 est · candidate
- Chemical potential difference → Combustion → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work7/7 est · extends a recorded pathway
- Electric potential difference → Peltier effect → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work7/7 est · same energy form
- Electric potential difference → Peltier effect → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work7/7 est · same energy form
- Electric potential difference → Ettingshausen effect → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work7/7 est · same energy form
- Electric potential difference → Ettingshausen effect → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work7/7 est · same energy form
- Incident radiation flux → Photothermal absorption → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work7/7 est · candidate
- Incident radiation flux → Photothermal absorption → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work7/7 est · extends a recorded pathway
- Radiative imbalance with the sky → Radiative sky cooling → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work7/7 est · candidate
- Radiative imbalance with the sky → Radiative sky cooling → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work7/7 est · extends a recorded pathway
- Nuclear binding-energy difference → Radioactive decay → Beta particles → Radioisotope heating → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work7/7 est · extends a recorded pathway
- Nuclear binding-energy difference → Radioactive decay → Alpha particles → Radioisotope heating → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work7/7 est · extends a recorded pathway
- Nuclear binding-energy difference → Nuclear fission → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work7/7 est · candidate
- Nuclear binding-energy difference → Nuclear fission → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Rotating-machine generator action → Charge carriers → Electrical work7/7 est · extends a recorded pathway
Cited sources · 3
- [1]P. Kumar et al.. Shape memory alloy engine for high efficiency low-temperature gradient thermal to electrical conversion (2019)
- [2]K. Otsuka (ed.), C. M. Wayman (ed.). Shape Memory Materials (1998)
- [3]A. Bejan. Advanced Engineering Thermodynamics (4th ed.) (2016)
Cite this entity
Physical Transformation Atlas (2026). entity phenomenon:thermally-driven-shape-memory-effect: Thermal shape-memory effect. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/phenomenon/thermally-driven-shape-memory-effect
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