Using dilatometry to study martensitic stabilization and recrystallization kinetics in a severely deformed NiTi alloy
Source abstract
Abstract
A martensitic NiTi alloy was separately processed by equal-channel angular pressing, repetitive corrugation and straightening by rolling and cold rolling. Measurements by dilatometry revealed a significant increase in the austenitic phase transformation temperature and martensitic stabilization after severe plastic deformation. The release of an excess volume upon recrystallization of the deformed NiTi alloy was measured using a high-precision difference-dilatometer employing non-isothermal and isothermal procedures. The kinetics of the recrystallization process was analyzed according to the Johnson–Mehl–Avrami–Kolmogorov theory and the average effective Avrami exponent was estimated as n ≈ 1. It is concluded that the recrystallization behavior is essentially similar for all three processing modes.
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Research context
OpenAlex topics: Shape Memory Alloy Transformations · Microstructure and Mechanical Properties of Steels · Titanium Alloys Microstructure and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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