Thermal Stability and Phase Transformation of Nanocrystalline Stainless Steels Prepared By Mechanical Alloying
Hasan Kotan Ahmet Burçin BATIBAY
AbstractNanocrystalline stainless steels with solute additions are synthesized using high energy mechanical alloying. Microstructural evolutions as a function of alloy compositions and annealing temperatures are investigated using focused ion beam microscopy, transmission electron microscopy and in-situ and ex-situ X-ray diffraction techniques. The dependence of hardness on the microstructure is utilized to study the mechanical changes. The relative importance of composition and solute additions in various temperature ranges are discussed with respect to grain growth and phase stability. The research reported in this work was supported by TUBITAK under Grant number 114M214. The authors wish to thank TUBITAK for the support.