Saturday, 8 February, 2014, 10:30
Posted by Jakub Kawalko
In january heating stage have been installed, and series of experiments have been performed, among them in-situ recrystallization of KoBo deformed titanium. Temperatures of heating experiment have been chosen basing on previously performed DSC analysis of KoBo deformed titanium. This analysis yielded two distinct peaks corresponding to exothermic phenomena related to recrystallization process. EBSD map have been collected from sample at room temperature, and then temperature have been increased to beginning of first peak. This was accompanied by sudden drop of diffraction pattern quality. Even though time was given for system to stabilize after temperature increase, pattern quality was low quality until the temperature was increased to temperatures over second crystallization peak from DSC analysis. Since limited time was available experiment could not be repeated. In future experiments either longer time for system stabilization should be allowed, or much smaller heating speed should be chosen.Posted by Jakub Kawalko
Microstructure obtained after last temperature increase was completely recrystallized with coarse equiaxed grains, however texture have not evolved during this heating experiment.
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