Study of alternatives and experimental validation for predictions of hole-edge fatigue crack growth in 42CrMo4 steel

Escalero, Mikel; Blasón, S.; Zabala, Haritz; Torca, I.; Urresti, I.; Muñiz‐Calvente, Miguel; Fernández‐Canteli, Alfonso

doi:10.1016/j.engstruct.2018.09.017

Cited by 10 publications

(3 citation statements)

References 25 publications

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“…The 42CrMo4 type of steel is a medium carbon alloy structural steel that has high strength, hardenability, toughness, creep strength, and endurance strength at high temperatures [1][2][3][4][5]. It is commonly used to prepare pitch and yaw bearings in wind power steel.…”

Section: Introductionmentioning

confidence: 99%

Formation and Removal Mechanism of Nonmetallic Inclusions in 42CrMo4 Steel during the Steelmaking Process

Qiao

Cheng

Huang

et al. 2022

Metals

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Nonmetallic inclusions are harmful to the quality of 42CrMo4 steel. Therefore, the formation and removal mechanism of inclusions in 42CrMo4 steel during the steelmaking process is investigated by industrial trials. The characteristics of inclusions in specimens were analyzed by scanning electron microscopy and energy dispersive spectroscopy. The main type of inclusions in molten steel in the early stage of ladle furnace (LF) refining is MgO-Al2O3 inclusions of irregular shape. CaO begins to appear in MgO-Al2O3 inclusions in the middle and late stages of LF. In the vacuum degassing (VD) refining stage, the inclusions in molten steel completely change into low-melting-point CaO-MgO-Al2O3 inclusions. The existence of [Mg] in molten steel is the fundamental reason for the formation of a large number of MgO-Al2O3 inclusions. Thermodynamic calculation shows that the refractory mainly transfers [Mg] to the liquid steel in the LF refining stage, whereas the slag mainly transfers [Mg] to the liquid steel in the VD refining stage. Kinetic calculation indicates that MgO-Al2O3 inclusions could be removed from molten steel faster than low-melting-point CaO-MgO-Al2O3 inclusions. The fundamental reason for the different removal behavior of the two types of inclusions is that the interfacial tension between the low-melting-point CaO-MgO-Al2O3 inclusions and the liquid steel is 50% lower than that of the MgO-Al2O3 inclusions.

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Section: Introductionmentioning

confidence: 99%

Formation and Removal Mechanism of Nonmetallic Inclusions in 42CrMo4 Steel during the Steelmaking Process

Qiao

Cheng

Huang

et al. 2022

Metals

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“…The main components of the pitch bearing are mainly made of high strength low-alloy steel 42CrMo4, which exhibits excellent harden ability properties. 4,5 The most common failures of large wind turbine bearings mainly arise from raceway failure, such as pitting, wear, or peeling. Therefore, there is a great demand for high-quality surface strengthening.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and experimental study on laser hardening process of the 42CrMo4 steel

Zhang

Zhu

et al. 2021

Advances in Mechanical Engineering

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The large diameter pitch bearing was made of steel 42CrMo4 and the laser hardening process was used to improve its surface properties. In this paper, a numerical approach which can predict the temperature field and the hardened depth is provided for the laser hardening process of the 42CrMo4 steel. According to the simplification of the raceway structure of pitch bearing, the finite element model was constructed using ABAQUS software. Based on the actual process parameters, the transient thermal analysis was accomplished and the distribution of temperature field is analyzed. The hardened depth is determined according to the proposed temperature range. Laser power, laser scanning speed, and spot diameter were considered as input parameters, the experimental studies were performed based on orthogonal design in order to study the effects of process parameters. The finite element model is validated. The surface roughness and microstructure studies on treated surfaces were conducted. Also the micro-hardness testing was performed. The results show that the laser hardening increases surface hardness by about 3.8 times than that of the base material. The three parameters of laser power, laser scanning speed, and spot diameter have a coupling effect on the surface treatment. The input laser power density is more important.

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“…The most widely used heat treatment configuration Q ? T (quenching and tempering) and fatigue crack propagation, is relatively well described in several papers (Lesiuk et al 2018a;Escalero et al 2018;Pandiyarajan et al 2020;Jing et al 2021). However, there are few papers devoted to the problem of mixed-mode loading and fatigue crack propagation for 42CrMo4 steel Farhangdoost 2017, 2018).…”

mentioning

confidence: 99%

Fatigue crack growth under mixed-mode I + II and I + III in heat treated 42CrMo4 steel

et al. 2021

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The paper contains the results of an experimental investigation of fatigue crack development under mixed-mode I + II and I + III in heat-treated 42CrMo4 steel. Tests were performed on heat-treated compact tension shear specimens and rectangular cross-section specimens for mixed-mode I + III. Mixed-mode I + II tests were conducted for 30 and 60° loading angle, while the test for I + III mixed-mode was conducted for 30 and 45°. Additionally, the paper presents fracture analysis results of fatigue crack path development.

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Study of alternatives and experimental validation for predictions of hole-edge fatigue crack growth in 42CrMo4 steel

Cited by 10 publications

References 25 publications

Formation and Removal Mechanism of Nonmetallic Inclusions in 42CrMo4 Steel during the Steelmaking Process

Formation and Removal Mechanism of Nonmetallic Inclusions in 42CrMo4 Steel during the Steelmaking Process

Numerical simulation and experimental study on laser hardening process of the 42CrMo4 steel

Fatigue crack growth under mixed-mode I + II and I + III in heat treated 42CrMo4 steel

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