Speaker
Chang-Hoon Lee
(Korea Institute of Materials Science (KIMS))
Description
Microstructural evolution and mechanical properties of Ti-bearing RAFM steels were investigated after aging at 550 °C for 0 ~ 1000 hr. All samples with Ti were prepared using vacuum induction melting furnace and hot rolling process, followed by heat treatment in normalizing and tempering. Microstructures including precipitates, fractured surfaces and cross-sectional microsturctures were observed using a scanning electron microscopy (SEM) and a transmission electron microscopy (TEM). Mechanical properties were measured by charpy impact test as well as tensile test. It was experimentally indicated that mechanical properties of Ti-added RAFM steels after aging showed degradation less than those of conventional RAFM steels due to fine (Ti,W)C carbides with higher thermal stability.
Co-authors
Chang-Hoon Lee
(Korea Institute of Materials Science (KIMS), Changwon, South Korea)
Hyoung Chan Kim
(National Fusion Research Institute (NFRI), Daejeon, South Korea)
Joonoh Moon
(Korea Institute of Materials Science (KIMS), Changwon, South Korea)
Jun-Young Park
(Korea Institute of Materials Science (KIMS), Changwon, South Korea)
Tae-Ho Lee
(Korea Institute of Materials Science (KIMS), Changwon, South Korea)
Woo-Kyung Seol
(Korea Institute of Materials Science (KIMS), Changwon, South Korea)
