DSC investigations of titanium grade 1 in a wide temperature range

Abstract

The paper presents the results of measurement the specific heat capacity of the Titanium Grade 1 (Ti Grade 1) which were made in wide temperature range from room temperature (RT) to (+)980 ?. The Netzsch differential scanning calorimeter DSC 404 F1 Pegasus was used. During the specific heat capacity cp(T) measurements, sapphire was utilized as the reference material. In order to observe thermal effects taking place in Titanium Grade 1 the measurements were performed several times. The volume of the DSC specimens was about 28 mm3 which were put in platinum crucibles. Comparison investigation was additionally performed in the temperature range from RT to (+)480 ? for specimen with a volume of about 11 mm3 and put in aluminum crucibles. The obtained results of specific heat were compared with the literature available data and the values calculated using own research performed on thermal diffusivity and thermal expansion. Additionally, the investigations of structure were performed to reveal the changes caused by high-temperature thermal tests. The stupendous overgrowth of the grains was disclosed.