Effect of isothermal annealing on Spheroidization of carbides in GCr15 steel

4th International Conference on Advanced Composite Materials and Manufacturing Engineering 2017

材料科学;化学

Yang, Xiaocai^1 ; Xu, Haiqiang^2 ; Wang, Yang^2 ; Ma, Jinlan^1

Matcrial Engineering Department, Hebei College of Industry and Technology, Shijiazhuang

050000, China^1

School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei

050000, China^2

关键词: Carbide particles;    Heating temperatures;    Heating time;    Isothermal temperature;    Isothermal time;    Spherical shape;    Spheroidization;    Spheroidizing effect;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/207/1/012051/pdf
DOI  :  10.1088/1757-899X/207/1/012051

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The spheroidizing effect of GCr15 steel was studied and the microstructure was analyzed by SEM under different isothermal annealing. The results show that: the carbide particles become smaller and smaller which is easy to form and grow into lamellar carbide with the increase of the temperature, and when the heating temperature is increased to 800°C; The carbide particles can grow into spherical shape independently, and even some of the particles begin to grow up with the increasing of the heating time; The optimum process of GCr15 steel is heating temperature 780 °C, heating time 5h, isothermal temperature of 700 °C, isothermal time 3h.