|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||F-72: Controlling of Mechanical Properties on SUS310S Substrate Used at Superconducting Wire
||Seung-gyu Kim, Najung Kim, Sung-gi Choi, Oh-min Kwon, Dongilk Kwon
|On-Site Speaker (Planned)
Most companies related to Superconductor ask for making cheaper products to make competitiveness in world market. So, the stainless steel get interests from researchers. But, Yield strength and tensile stress of superconductor with stainless substrate decrease sharply after processing. The mechanical properties of superconductor are mostly influenced by the substrate. For understanding this variation, we follow and check each processing steps of substrate using nano indentation testing and EBSD for micro-structure. We evaluate microstructures inside of substrates with nano-indentation from pre-process one to end-process one for comparison. As a result, we find that twins in the substrate after rolling go through recrystallization and recovery in high temperature process. Based on mechanical and microscopic analysis, we propose a method for controlling the major factor in lowering the mechanical properties of the substrate. Controlling the development of a hardened structures such as a twin in substrates can reduce the degree of re-crystallization.
||Planned: Supplemental Proceedings volume