Superelasticity is a remarkable phenomenon observed in shape-memory alloys (SMAs), which allows these materials to undergo significant strains without permanent deformation. This behavior is primarily due to a reversible phase transformation between the austenite and martensite phases, typically triggered by changes in temperature or stress. When an SMA is deformed above its austenite finish temperature, it can recover its original shape upon unloading, demonstrating a unique ability to return to its pre-deformed state.
Key features of superelasticity include:
In summary, superelasticity in shape-memory alloys combines mechanical flexibility with the ability to revert to a specific shape, enabling innovative solutions in engineering and technology.
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