Shape Memory Alloy — 2D Bend & Recover

Bend the wire, sweep temperature through Ms/Mf/As/Af, then heat to recover its shape. The right-hand plot is the same superelastic stress-strain hysteresis loop that defines a real SMA.

Phase: Austenite Cubic structure — high stiffness, shape-restoring

Wire (deform, then heat to recover)

Stress-Strain Hysteresis Loop

Austenite

Phase

50°C

Temp

0.00%

Strain

Stress (MPa)

100%

Austenite frac.

Alloy:

Temperature (°C) 50°C

Applied stress / deform (MPa) 0 MPa

Loading mode Superelastic