First trial of in situ neutron diffraction experiment with thermo-mechanical simulator at J-PARC

J-PARCでの熱・加工シミュレータを用いたその場中性子回折実験の挑戦

Harjo, S.   ; 柴田 曉伸*; Park, N.*; 川崎 卓郎   ; 大石 毅一郎*; 相澤 一也  ; 辻 伸泰*

Harjo, S.; Shibata, Akinobu*; Park, N.*; Kawasaki, Takuro; Oishi, Kiichiro*; Aizawa, Kazuya; Tsuji, Nobuhiro*

A new sample environmental device for simulating thermo-mechanical processes of materials (thermec-mastor) has been installed in a collaboration between a research group in Kyoto University and BL19 in MLF of J-PARC, within a scheme of Elements Strategy Initiative for Structural Materials supported by Ministry of Education, Culture, Sports, Science and Technology, Japan. This new device is designed to heat the specimens by induction heating and cool them by gas injection. The highest rates for heating and cooling are about 30 K/s. It can also apply compressive deformation with the highest rate of 100 mm/s. The basic design and the commissioning progress of the thermec-mastor will be briefly introduced together with the first neutron diffraction data on steels. At 300 kW accelerator operation, diffraction patterns sliced with the interval time of about 1 s could be used to determine the occurrence of phase transformation during thermo-mechanical processes.