Effect of initial spheroidizing microstructure after quenching and tempering on wear and contact fatigue properties of GCr15 bearing steel

Wu, Hongyan; Han, Dongxu; Du, Yan-Jun; Gao, Xiuhua; Du, Linxiu

doi:10.1016/j.mtcomm.2022.103152

Cited by 9 publications

(6 citation statements)

References 30 publications

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“…This can be explained by the fact that the increase in surface roughness at the beginning of wear raises the coefficient of friction, but with the increase of the sliding distance, the wear track becomes flatter and the COF value altered with minimal variations. As the friction coefficient increases, the material's wear rate increases, so it can be interpretted that the SQT sample shows slightly better wear resistance [7]. Low variations in hardness between FP and SFP lead to corresponding differences in wear loss.…”

Section: Resultsmentioning

confidence: 98%

“…In the martensitic structure developed with quenching after spheroidization annealing, carbides can be partially dissolved in the austenitization process. Wu et al investigated the effect of spheroidization treatment prior to quench-tempering in GCr15 bearing steel and concluded that enhancing the initial grade of spheroidization improved hardness and wear performance [7].…”

Section: Introductionmentioning

confidence: 99%

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MıCROSTRUCTURE AND WEAR PROPERTıES OF 42CrMo4 STEEL PREPARED BY VARıOUS HEAT TREATMENTS METHODS

ÇELTİK

Yürektürk

2022

METAL Conference Proeedings

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42CrMo4 steels are widely used in automotive, aerospace applications and machine tools where wear resistance needs to be maintained throughout its lifetime. It is possible to change the initial microstructure of these steels with various heat treatments and improve their mechanical properties. For this purpose, the effect of different heat treatment processes on wear characteristics of 42CrMo4 quality steel was investigated in this study. After various heat treatments methods, spheroidized ferrite-perlite, tempered martensite, tempered martensite with spherical carbides microstructures were obtained in 42CrMo4 steel. Hardness measurements and the wear tests were performed with microhardness tester and reciprocating type tribometer, respectively. The microstructural features developed by the applied heat treatments were examined with an optical microscope, and the wear characteristics were studied in terms of friction coefficient, wear volume loss, and worn surfaces of samples.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

MıCROSTRUCTURE AND WEAR PROPERTıES OF 42CrMo4 STEEL PREPARED BY VARıOUS HEAT TREATMENTS METHODS

ÇELTİK

Yürektürk

2022

METAL Conference Proeedings

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show abstract

“…As we all know, it has important applications in the manufacture of mechanical parts such as bearing rings and ball screws [2]. This steel has excellent strength and hardness properties [3], which contribute to the smooth operation of equipment. In addition, it is widely used in various fields such as automotive engines, wind turbines and aerospace equipment due to the extreme working conditions usually encountered by bearing steel [4], such as high temperature and high pressure [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Rare Earth Y on Microstructure and Mechanical Properties of High-Carbon Chromium Bearing Steel

Xu,

Liu,

Yang

et al. 2024

Metals

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The effect of rare earth Y on the microstructure and properties of high-carbon chromium bearing steel in different heat treatment processes has been studied. The microstructure and mechanical properties of the bearing steel under hot rolled, annealed and quenched and tempered conditions were compared and analysed, focusing on the effect of inclusions on fatigue performance. The addition of rare earth Y improves the microstructure, Vickers hardness, tensile strength, impact toughness and fatigue properties of bearing steel. The results show that rare earth Y can refine and spheroidise cementite, make the distribution of cementite more uniform, enhance the strengthening effect of the second phase and reduce the stress concentration caused by the shape of cementite. At the same time, the formation of network cementite is inhibited and the harm to grain boundary is reduced. It also has a refining effect on the grain, and the refined grain can achieve better mechanical properties. In addition, by modifying the oxides and sulphides in the steel, the properties of the steel are also improved, particularly in the quenched and tempered state.

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“…This requirement can be defined by metallography (carbide spheroidization analysis) or mostly hardness measurement by maximal value. It leads to a big range in terms of structural conditions and possible trouble for following heat treatments in high-strength applications [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Influence of Structural State prior Quenching in Spring Steel

Kotous¹,

Salvetr²

2023

Manufacturing Technology

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Various structure states before quenching significantly influence final mechanical properties as well as the dispersion of chemical composition at the same steel grade. Therefore heat treatment with mechanical properties is specified in the technical delivery conditions. Even if the heat treatment is determined, different mechanical properties can be achieved. These differences are increasing in importance in high-strength applications like springs, cutting tools, safety, and load-bearing parts of automotive design ect. Because it has a direct impact on their lifetime. The structure consists of ferrite and cementite after spheroidization annealing prior quenching process. The cementite could be observed in various shapes, e.g. fine and large globular particles or the rest of the disintegrated lamellar shape. This article shows how these cementite morphologies affect the quenching behavior and final mechanical properties in high-strength spring steel 54SiCr6. Accelerated Spheroidization, ASR Quenching Spring steel 54SiCr6.

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Effect of initial spheroidizing microstructure after quenching and tempering on wear and contact fatigue properties of GCr15 bearing steel

Cited by 9 publications

References 30 publications

MıCROSTRUCTURE AND WEAR PROPERTıES OF 42CrMo4 STEEL PREPARED BY VARıOUS HEAT TREATMENTS METHODS

MıCROSTRUCTURE AND WEAR PROPERTıES OF 42CrMo4 STEEL PREPARED BY VARıOUS HEAT TREATMENTS METHODS

Effect of Rare Earth Y on Microstructure and Mechanical Properties of High-Carbon Chromium Bearing Steel

Influence of Structural State prior Quenching in Spring Steel

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