Effects of quenching temperature on tempering microstructure and mechanical properties of 30MnB steel

1st International Conference on Frontiers of Materials Synthesis and Processing

材料科学;化学

Zhu, Pengxiao^1,2 ; Li, Yi^1,2 ; Cui, Haixia^1,2 ; Zhang, Dongya^1,2

State Key Laboratory of Intelligent Manufacturing of Advanced Construction Machinery, Xuzhou Construction Machinery Group, Xuzhou

221004, China^1

Jiangsu Xuzhou Construction Machinery Research Institute, Xuzhou Construction Machinery Group, Xuzhou

221004, China^2

关键词: Carbide precipitation;    Carbon segregation;    Low temperature impact toughness;    Microstructure and mechanical properties;    Quenching temperatures;    Retained austenite;    Tempered martensite;    Wear morphology;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/274/1/012060/pdf
DOI  :  10.1088/1757-899X/274/1/012060

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This article presents the effects of quenching temperature on tempering microstructure, mechanical properties and wear resistance of 30MnB steel were studied. The results showed that: The microstructure of 30MnB steel was the tempered martensite and retained austenite after quenching at 840°c-900°c and then tempering at 200°c. the carbide precipitation did not occur when 30MnB steel was tempered at 200°c, only the carbon segregation occurred. Meanwhile, the tensile strength of 30MnB was all above 1350MPa after quenching at 840°c-900°c and then tempering at 200°c, the-40°c ballistic work was above 20J, indicating that it had good low temperature impact toughness. 30MnB had minimum abrasion loss after quenching at 880°c and then tempering at 200°c, the wear morphology was fine wear mark, shallow furrow and ridge augmentation.