English: At first the sample is given shape in high temperature, when it is Austenite.
Then the sample is cooled, and Austenite converts to Twinned Martensite, keeping the shape.
Then the sample is bent in a lower temperatre - mattensite detwins - so the deformation is "permament".
As the temperature raises, the Austenite concentration increases, and the sample comes back to the original shape.
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