In situ experiments with Synchrotron High-Energy X-rays of Ni-Ti alloys produced by powder metallurgy


The structural evolution that takes place during the homogenization heat treatments of powder metallurgical Ni-Ti alloys was studied by in situ synchrotron diffraction. It is proposed to get a deeper understanding of this phenomenonby using different types of thermal/mechanical cycles.This work also intends to prove the feasibility of in situ X-ray diffraction studies during thermomechanical cycles and to demonstrate the interest of the combined dilatometry (under compression) and diffraction data for the detailed analysis of the phase transformations in powder metallurgical Ni-Ti shape memory alloys.
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