Speaker
Dr
Huihui Yang
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Description
Developing a systematic and thorough framework for the TF jacket is of profound repercussions to ITER. Here, we present an extensively observation and analysis of structural transformation for TF jacket after tensile test at cryogenic temperature with a phase transformation from γ-austenitic phase to α'-martensite. We found with decreasing the temperature, less external energy is needed to induce the γ-α' phase change. The maximum volume fraction of α'-martensite phase is occurred at fracture and a gradual transformation of γ into α' occurs parallel the longitudinal direction. Overall microanalysis reveals intersections of deformation bands, dislocation channels and twins on {111} plane as the favorable sites can promote the generation of α'-martensite phase. Moreover, we propose our assay to enable exhibition the deformation mechanism and help to guide and explain the structural physics of TF jacket in ITER.
Author
Dr
Huihui Yang
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Co-authors
Dr
Chuanjun Huang
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Prof.
Laifeng Li
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
Dr
Rongjin Huang
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
