Word Count : 259

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The transformation of austenite to martensite is one of the most important phase transformations in steels and is a classic example of a diffusionless or displacive transformation. Austenite is a face centered cubic phase of iron that is stable at high temperatures. When steel in the austenitic condition is cooled very _______ ___ ________ ___ _______ __________ _____ ____ __________ ___ ______ _______.
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