Open AccessMicrostructure and Performance Control of High strength and High Toughness Ti-Nb Microalloyed Marine Steel Plate
Author(s) -
Jixiang Gao,
Daobiao Liao,
Liejun Li,
Fenglei Zhou
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1676/1/012040
Subject(s) - charpy impact test , materials science , toughness , metallurgy , microstructure , microalloyed steel , welding , austenite , high strength steel , composite material
Adopting Ti-Nb microalloying design technology, this paper studied the austenitic recrystallization law of Marine steel plate, control rolling process, control cooling process and steel normalizing process control systematically. The thickest 60 mm special Marine steel plate developed which has reached the yield strength of 420MPa and charpy impact energy of more than 200J (-20°C), has high strength, impact toughness, lamellar tear resistance and good welding performance, meeting the technical requirements of thick specification high strength and high toughness special Marine steel plate and realizing the application in large ships.