|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Fatigue and Fracture III
||A-35: Effect of Adding Yttrium on the Inclusion Modification and Impact Toughness of E36 Shipbuilding Steel
||Xiaojun Xi, Maolin Ye, Shufeng Yang , Jingshe Li, Liu Wei
|On-Site Speaker (Planned)
The scientific exploration and exploitation of the ocean resource is now proceeding at a greatly accelerated rate. Consequently it is required that shipbuilding steel must possess high strength and toughness. In this comparative study, the inclusion, microstructure and impact toughness of an E36 shipbuilding steel, with and without addition of yttrium, were investigated. The results show that the elongated MnS inclusions in E36 steel were replaced by spindle and spherical inclusions containing yttrium upon addition of 0.023 wt.% yttrium, leading to the formation of the E36Y steel. The microstructure of test steels was characterized through the ferrite and pearlite phases. The addition of yttrium decreased the pearlite lamellar spacing and refined the pearlite laminae. Furthermore, the impact toughness of test steel increased significantly at different temperatures; both the longitudinal and transverse impact fracture displayed ductility characteristics; and the anisotropy of longitudinal and transverse impact toughness decreased significantly.
||Planned: Supplemental Proceedings volume