Effective Microstructure Unit in Control of Impact Toughness in CGHAZ for High Strength Bridge Steel

• Published in: Journal of Wuhan University of Technology. Materials science edition Vol. 33; no. 1; pp. 177 - 184
• Main Author: 杨秀芝;张李超;史玉升;YU Shengfu;DONG Chunfa;HUA Wenlin;LI Xuan
• Format: Journal Article
• Language: English
• Published: Wuhan Wuhan University of Technology 01.02.2018; Springer Nature B.V
• Subjects: Bainite; CGHAZ;微观结构;扫描电子显微镜;控制;钢;热输入;EBSD;SEM; Chemistry and Materials Science; Cleavage; Crack propagation; Electron backscatter diffraction; Electron microscopes; Electrons; Fracture surfaces; Fracture toughness; Grain refinement; Heat affected zone; High strength; Impact strength; Materials Science; Microstructure; bainite; heat affected zone (HAZ); impact toughness; EBSD

The high strength bridge steel was processed with the simulated coarse grain heat affected zone（CGHAZ） thermal cycle with heat input varying from 30 to 60 kJ/cm, the microstructures were investigated by means of optical microscope（OM）, scanning electron microscope（SEM）, electron backscattering diffr...