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Dans le cadre du Labex DAMAS, le LEM3 (Laboratoire d'étude des microstructures et de mécanique des matériaux et l'Institut Jean Lamour accueillent E. Sukedai (Okayama University of Science) pour un séminaire intitulé :
"A study of nucleation behavior of β−ω phase transformation in β−Ti alloys using electron microscopy"
Date et lieu :
Lundi 18 mai 2015 à 14h30
Institut Jean Lamour
Site de Saurupt
β-Ti alloys have many useful properties such as high strength and high deformability. In order to improve their properties, themo-mechanical processing has been performed, and it is thought that the dominant control factor is formation of fine and high density of precipitates such as ∝ and ω-phases. Therefore, it is important that nucleation behavior of precipitates is clarified. Two topics about the behavior studied using electron microscopy will be introduced. Possibility of vacancy-clusters for nucleation-sites based on the results of age-hardening behavior of two specimens quenched-in from different temperatures. Effect of stressing to nucleation behavior along deformation twin boundaries.