Neha S. John, Bailey Ashmore, Michael T Wall, R. Wheeler, M. L. Young, A. Giri
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Comparative Analysis of Process-Induced Strain Glass States in Austenitic and Martensitic NiTi Shape Memory Alloy Plates
In this work, a new method of processing shape memory alloys was utilized to understand the effects of disrupting the martensitic long range order and forming amorphous nanodomains with martensitic short range order. Based on the obtained results, strain glass alloy states were analyzed and confirmed using various characterization methods to determine trends and compare two alloys, Ni49.5Ti50.5 and Ni50.8Ti49.2. For Ni49.5Ti50.5 a 33% thickness reduction was required to obtain a cold work-induced strain glass state, while for Ni50.8Ti49.2 a 24% reduction was required.
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