TLP contents
Main pages
- Aims
- Before you start
- Introduction
- Martensitic Phase Transformations - A Simple Example
- Martensitic Phase Transformations - Basic Thermodynamics
- Martensitic Phase Transformations - Hysteresis Characteristics
- Superelasticity - Strain Accommodation by Martensite Formation
- Superelasticity - Hysteresis in the Stress-Strain Behaviour
- Shape Memory Effect - "Training" of the Transformation
- Shape Memory Effect - The "Ferris Wheel" Experiment
- Microstructural Changes during Thermo-Mechanical Treatment
- Limits of Superelasticity
- Applications
- Summary
- Questions
- Going further
Additional pages
Media resources
- Displacive and diffusive phase transformations (Flash)
- Twinning and martensitic deformation (Flash)
- The basics of Shape memory effect (Flash)
- Graph of effect of adding and removing weights to a spring (interactive) (Flash)
- Superelasticity and/or shape memory determined by temperature or stress (Flash)
- Superelasticity and changing load on a spring (Flash)
- Rotation of a ferris wheel on heating and cooling (Flash)
- Comparing slip and deformation twinning (Flash)
- Explaining superelasticity (Flash)
- Hysteresis in the phase transformations during thermal cycling of SMAs (Flash)
- Free energy plot for martensitic-austenitic system (Flash)
- A Boeing 787 (image)
- Diagram showing structures for spring in different stages of stretch (image)
- The Hubble Space Telescope (image)
- Diagram of apparatus to investigate superelasticity of a Ni-Ti spring (image)
- Graph of shear stress vs shear strain (image)
- Graph of shear stress vs shear strain for loading and unloading (image)
- Generic 3 phase graph (image)
- Pressure-Temperature graph and Carnot cycle (image)
- Stress-temperature graph (image)
- Video of spring being distorted at room temperature, on heating it returns to its original shape (video)
- Video of rotation of a ferris wheel on heating (video)
- Close-up video of rotation of a ferris wheel on heating (video)
- Close-up video of rotation of a ferris wheel on cooling (video)
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