Effect of tempering temperature on mechanical properties of 18Cr2Ni4WA steel after carburizing and quenching

doi:10.13251/j.issn.0254-6051.2021.12.043

Abstract

Abstract: In order to study the effect of different tempering temperatures on the mechanical properties of carburized surface and non carburized part (core) of 18Cr2Ni4WA steel after carburizing and quenching, the mechanical properties of specimen at different tempering temperatures after carburizing and quenching were studied by means of microhardness tester, tensile testing machine and impact testing machine. The properties of gear specimen at different tempering temperatures were simulated and analyzed by ABAQUS simulation software. The results show that with the increase of tempering temperature, the hardness and strength of the specimen decrease, and the impact absorbed energy of the core also decreases significantly. At 300 ℃, its impact absorbed energy value is close to the minimum value specified in the technical requirements. Considering the furnace temperature and the non-uniformity of material composition, the tempering temperature of this kind of steel after carburizing and quenching should not be higher than 260 ℃ under certain conditions.

Key words: 18Cr2Ni4WA steel, gear, carbonizing and quenching, tempering temperature, mechanical properties

CLC Number:

TG156

Li Feng, Li Shuangxi, Li Jiqiang, Wang Hongwei, Liu Qiaoqiao, Wang Dongzhu, Miao Weiwei. Effect of tempering temperature on mechanical properties of 18Cr2Ni4WA steel after carburizing and quenching[J]. Heat Treatment of Metals, 2021, 46(12): 256-261.

References

[1]Liu Mao, Lin Jheyu, Wang Pengfei, et al. Study of deformation behaviors of martensitic steel quenched at ultralow temperature[J]. Materials Science and Engineering, 2020, 785: 139399.
[2]Wang Bin, He Yanping, Liu Ye, et al. Thermodynamics of phase transformation and microstructure evolution of 18Cr2Ni4WA carburized steel during high-temperature tempering[J]. Steel Research International, 2020, DOI: 10. 1002/srin. 202000094.
[3]Zhang Caixia, Song Zhiqiong, Liu Zhifeng, et al. Tribological properties of flexspline materials regulated by micro-metallographic structure[J]. Tribology International, 2018, 127: 127-186.
[4]Liu Qingdong, Wen Haiming, Han Zhang, et al. Effect of multistage heat treatment on microstructure and mechanical properties of high-strength low-alloy steel[J]. Metallurgical and Materials Transactions A, 2016, 47(5): 1960-1974.
[5]Shen Zhixian, Qiao Baijie, Yang Laihao, et al. Fault mechanism and dynamic modeling of planetary gear with gear wear[J]. Mechanism and Machine Theory, 2021, 155:104098.
[6]Yang Junjie, Pang Keji. Elastoplastic behavior of case-carburized 18Cr2Ni4WA steel by indenter testing[J]. Journal of Aerospace Engineering, 2019, 32(4): 04019045.1-04019045.9.
[7]Wang Bin, He Yanping, Liu Ye, et al. Mechanism of the microstructural evolution of 18Cr2Ni4WA steel during vacuum low-pressure carburizing heat treatment and its effect on case hardness[J]. Materials, 2020, 13(10): 2352.
[8]Chen Yunxia, Jin Yi, Liang Xihui, et al. Propagation path and failure behavior analysis of cracked gears under different initial angles[J]. Mechanical Systems and Signal Processing, 2018, 110: 90-109.
[9]Li Lijun, Sun Lingyu. Experimental and numerical investigations of crack behavior andlife prediction of 18Cr2Ni4WA steel subjected to repeated impact loading[J]. Engineering Failure Analysis, 2016, 65: 11-25.
[10]Aditya Armaan, Sharma Keshav, Srinivas G. A step towards safety: Material failure analysis of landing gear[J]. Materials Today: Proceedings, 2020, 27: 402-409.
[11]胡发贵, 王芝林, 李硕, 等. 18Cr2Ni4WA钢的热敏感性与热处理工艺[J]. 金属热处理, 2018, 43(8): 162-166.
Hu Fagui, Wang Zhilin, Li Shuo, et al. Overheating susceptivity and heat treatment process of 18Cr2Ni4WA steel[J]. Heat Treatment of Metals, 2018, 43(8): 162-166.
[12]李锋, 王新宇, 李世键, 等. 18Cr2Ni4WA钢衬套的精密气体渗碳淬火热处理[J]. 金属热处理, 2016, 41(4): 154-157.
Li Feng, Wang Xinyu, Li Shijian, et al. Precise gas carburizing quenching process of 18Cr2Ni4WA steel bushes[J]. Heat Treatment of Metals, 2016, 41(4): 154-157.
[13]顾晓明, 吕蓝冰, 刘俊伟. 18Cr2Ni4WA钢渗碳后盐浴淬火对组织与性能的影响[J]. 金属热处理, 2017, 42(5): 184-188.
Gu Xiaoming, Lü Lanbing, Liu Junwei. Effect of salt bath quenching after carburizing on microstructure and property of 18Cr2Ni4WA steel[J]. Heat Treatment of Metals, 2017, 42(5): 184-188.
[14]王静宣, 胡永椿. 回火温度对18Cr2Ni4WA钢强韧性的影响[J]. 金属热处理, 1984, 9(7): 19-24.
Wang Jingxuan, Hu Yongchun. Influence of tempering temperature on the strength and toughness of 18Cr2Ni4WA steel[J]. Heat Treatment of Metals, 1984, 9(7): 19-24.
[15]刘向艳, 崔鸿, 李刚, 等. 回火温度对渗碳钢18Cr2Ni4WA组织和硬度的影响[J]. 特殊钢, 2019, 40(5): 57-59.
Liu Xiangyan, Cui Hong, Li Gang, et al. Effect of tempering temperature on microstructure and hardness of 18Cr2Ni4WA carburized steel[J]. Special Steel, 2019, 40(5): 57-59.
[16]梁志强, 黄迪青, 周天丰, 等, 齿轮钢18Cr2Ni4WA磨削烧伤实验及仿真预测研究[J]. 兵工学报, 2017, 38(10): 1995-2001.
Liang Zhiqiang, Huang Diqing, Zhou Tianfeng, et al. Experiment and simulation prediction of grinding burn of gear steel 18Cr2Ni4WA[J]. Acta Armamentarii, 2017, 38(10): 1995-2001.
[17]程勇, 朱加赞, 黄宏亮, 等. 航空齿轮涂层材料优选及涂层厚度优化[J]. 燃气涡轮试验与研究, 2020, 33(1): 41-46.
Cheng Yong, Zhu Jiazan, Huang Hongliang, et al. Optimization of coating material and coating thickness for aircraft gear[J]. Gas Turbine Experiment and Research, 2020, 33(1): 41-46.