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Shape-memory alloy spring
The shape memory effect of nickel–titanium alloy memory springs arises from the reversible phase transformations of their internal microstructure in response to temperature changes. In the high‑temperature austenitic phase, the spring assumes a specific initial shape. When the temperature drops into the martensitic transformation range, the alloy’s microstructure transforms into the martensitic phase, allowing the spring to undergo plastic deformation under external loading. However, upon reheating and raising the temperature above the austenitic transformation threshold, the martensitic phase reverts to the austenitic phase, and the spring automatically recovers its original shape—as if “remembering” its initial configuration. For example, in certain temperature‑control devices, a nickel–titanium alloy memory spring is stretched at low temperatures; when the ambient temperature rises to a set point, the spring rapidly returns to its undeformed state, thereby actuating the corresponding mechanical motion or circuit switch.
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Shape-memory alloy spring
The shape memory effect of nickel–titanium alloy memory springs arises from the reversible phase transformations of their internal microstructure in response to temperature changes. In the high‑temperature austenitic phase, the spring assumes a specific initial shape. When the temperature drops into the martensitic transformation range, the alloy’s microstructure transforms into the martensitic phase, allowing the spring to undergo plastic deformation under external loading. However, upon reheating and raising the temperature above the austenitic transformation threshold, the martensitic phase reverts to the austenitic phase, and the spring automatically recovers its original shape—as if “remembering” its initial configuration. For example, in certain temperature‑control devices, a nickel–titanium alloy memory spring is stretched at low temperatures; when the ambient temperature rises to a set point, the spring rapidly returns to its undeformed state, thereby actuating the corresponding mechanical motion or circuit switch.
To find the right solution, please contact our technicians,Contact Us!
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