Effect of rare earth on isothermal transformation kinetics in high strength-toughness tool steel

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Tan, Qibing^1

Tianjin Polytechnic College, School of Materials Science and Metallurgical Engineering, Tianjin

300400, China^1

关键词: Drilling tool;    High strength;    Isothermal transformation kinetics;    Isothermal transformations;    New high;    Nose temperature;    Phase transformation kinetics;    TTT diagram;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/2/022029/pdf
DOI  :  10.1088/1757-899X/392/2/022029

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The effect of rare earth on phase transformation kinetics in new high strength-toughness drilling tool steel during isothermal transformation has been investigated systematically, and the TTT diagrams were obtained. The results show that rare earth improves the value of phase transformation activation energy; The TTT diagrams have been shifted to right and down with the increment of rare earth, and nose temperature decreased from 385°C to 350°C in drilling tool steel.