Microstructural evolution and performance change of a carburized nanostructured bainitic bearing steel during rolling contact fatigue process

Yang, Zhinan; Ji, Yunlong; Zhang, F.C.; Zhang, M.; Nawaz, Bilal; Chen, Zheng

doi:10.1016/j.msea.2018.04.015

Cited by 42 publications

(11 citation statements)

References 21 publications

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“…In addition, As the introduction of the retained austenite in the surface layer is beneficial to the rolling contact fatigue life, the maximum enhancement of the rolling contact fatigue life could be realized when increasing austenite volume fraction from 7 vol.% to 50 vol.%, resulting in 10 times' enhancement of rolling contact fatigue life [12]. Although it has been proved by many researchers that the carburization is effective to increase the surface residual compressive stress, the surface hardness and the residue austenite volume fraction [13][14][15], this type of surface treatment technology has never been applied in the TH bearing steel and no microstructure evolution has been reported in literature [16].…”

Section: Introductionmentioning

confidence: 99%

Carburization induced extra-long rolling contact fatigue life of high carbon bearing steel

Cao

Liu

et al. 2020

International Journal of Fatigue

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Section: Introductionmentioning

confidence: 99%

Carburization induced extra-long rolling contact fatigue life of high carbon bearing steel

Cao

Liu

et al. 2020

International Journal of Fatigue

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“…Therefore, improving the properties of bearing steel has been the goal of material researchers. Nanostructured bainitic microstructure not only possesses excellent strength and toughness [1,2,3,4,5], but exhibits a high wear resistance and has a better rolling contact fatigue performance compared to the martensitic microstructure [6,7,8,9,10,11]. This material is therefore suitable for the bearing application [12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Two-Step Austempering Process on Transformation Kinetics of Nanostructured Bainitic Steel

Chu

Qin

et al. 2019

Materials

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The two-step austempering process has been reported to be an effective method to accelerate the bainitic transformation process by introducing martensite (Q-M-B). However, in this study, it was found that the Q-M-B process reduced the incubation time, but the transformation duration remained nearly unchanged. The notably reduced activation energy barrier for nucleation of bainitic ferrite on the preformed martensite should be responsible for the reduced duration time of the Q-M-B process. A process that both of the two steps were above, Ms (Q-B-B), has been demonstrated to increase transformation rate and improve the amount of bainitic ferrite, which probably results from the additional hysteresis free energy provided by the first quenching process.

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“…Carburizing is a surface-hardening treatment which is usually used to improve the performance of components such as bearings and ring gears which require a very hard surface to resist wear along with a tough interior to resist impact in service [1][2][3][4]. The achievement after carburizing process is obtaining the carbon content gradient, i.e., carburized layer.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cryogenic Treatment on Microstructure and Wear Resistance of Carburized 20CrNi2MoV Steel

Wang

et al. 2018

Metals

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This paper investigated the response of carburized 20CrNi2MoV steel to cryogenic treatment including microstructure and wear resistance. Two cryogenic treatment methods including cryogenic treatment at −80 °C (CT) and deep cryogenic treatment at −196 °C (DCT) as well as conventional heat treatment (CHT) were carried out after carburizing process. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffractometry (XRD) were employed for microstructure characterization. The wear resistance was investigated by ball-on-disc sliding wear test on a multi-functional tribometer. The results show that the wear resistance of the experimental steel has been improved by 17% due to CT and by 25.5% due to DCT when compared to CHT. This significant improvement in wear resistance after cryogenic treatment is attributed to the microstructural changes including the finer martensitic structure, the reduction of retained austenite and the development of fine and more numerous carbides. Among these factors, the precipitation of fine carbides plays a more prominent role in enhancing wear resistance.

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Microstructural evolution and performance change of a carburized nanostructured bainitic bearing steel during rolling contact fatigue process

Cited by 42 publications

References 21 publications

Carburization induced extra-long rolling contact fatigue life of high carbon bearing steel

Carburization induced extra-long rolling contact fatigue life of high carbon bearing steel

Effect of Two-Step Austempering Process on Transformation Kinetics of Nanostructured Bainitic Steel

Effect of Cryogenic Treatment on Microstructure and Wear Resistance of Carburized 20CrNi2MoV Steel

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