Impact of a Multi-step Heat Treatment on Different Manufacturing Routes of 18CrNiMo7-6 Steel

Mandal, Paranjayee; Olasolo, Maider; Silva, Laurie Da; Lalvani, Himanshu

doi:10.1007/s11661-020-05728-x

Cited by 10 publications

(2 citation statements)

References 15 publications

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“…The surface hardening 18CrNiMo7-6 steel has the main characteristics of high wear resistance, good fatigue performance and high cost performance [1]. As a widely used carburizing alloy in wind turbine gear, it has industrial application value [2].…”

Section: Introductionmentioning

confidence: 99%

Recrystallization Mechanism and Processing Map of 18CrNiMo7-6 Alloy Steel during Hot Deformation

Xie

Wang²,

Chen³

et al. 2022

Metals

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In this study, isothermal single-pass forming doformation of forged 18CrNiMo7-6 alloy steel was carried out by Gleeble-3500 thermal simulation testing machine. The constitutive equations and processing maps with parameters of deformation temperature and strain rate were established. The results show that the optimum hot deformation parameters are temperature 1050 °C, strain rate 0.1 s–1 with the peak power efficiency being 0.432. The mechanism of grain refinement during hot compression was also characterized by electron backscatter diffraction (EBSD). The results show that continuous dynamic recrystallization (CDRX), discontinuous dynamic recrystallization (DDRX) and grain growth are the main microstructure evolution mechanisms during hot working. The rotation of sub-grains under CDRX mechanism is the main factor for the formation of new grains. In addition, the DDRX mechanism is formed by the bulging of HAGBs at the grain boundary triple junction of the original grains, and the CDRX mechanism forms finer grains. The study also found that temperature affected the organization evolution mechanism, the DDRX mechanism plays a leading role when the temperature is low. With the increase of deformation temperature, CDRX begins to play a leading role and forms finer grains. When the deformation temperature rises to 1150 °C, the grains continue to grow at a higher temperature.

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Section: Introductionmentioning

confidence: 99%

Recrystallization Mechanism and Processing Map of 18CrNiMo7-6 Alloy Steel during Hot Deformation

Xie

Wang²,

Chen³

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

“…The study of mechanical properties of metals and alloys, including steel, and their resistance to external factors, is a fundamental matter for the development of multiple technological applications [1,2]. 18CrNiMo7-6 steel is widely used in the field of transportation, energy generation and general mechanical engineering, such as bearings, gears and wear pins, due to its three key characteristics: high wear resistance; good fatigue strength; and cost efficiency [3]. However, during the manufacturing processes such as cutting and grinding, tensile stresses always generate, which will deteriorate the fatigue life.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Surface Integrity in 18CrNiMo7-6 Steel after Multiple Abrasive Waterjet Peening Process

Zou

et al. 2020

Metals

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Abrasive waterjet peening (AWJP) as an important surface strengthening method can effectively improve surface properties. In this study, after multiple AWJP, the distribution of compressive residual stress and roughness on the surface of 18CrNiMo7-6 steel has been evaluated by an X-ray diffraction (XRD) method and a 3D surface topography system, respectively. Compared with the single AWJP, multiple AWJP can obviously increase the surface residual stresses (−1024 MPa to −1455 MPa) and the depth of maximum compressive residual stress (100 μm to 120 μm), as well as make the stress distribution more uniform. In terms of the surface roughness, multiple AWJP influences its uniform distribution and reduces the surface roughness (Sa = 0.69 μm), compared with a single AWJP (Sa = 2.96 μm), due to the smaller shot balls and a uniform deformation during multiple AWJP. In addition, we have studied the effects of multiple AWJP on the hardness of the surface layer. The results show that multiple AWJP increases the hardness by up to 15.9%, compared to the single AWJP. These studies provide useful insight into improving the surface properties of 18CrNiMo7-6 steel by multiple AWJP.

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Numerical studies on the parameter effect and controlling method of the residual stress in the remanufactured 17CrNiMo6 heavy-duty gear by the laser cladding deposition

Ge,

Liu

2023

Int J Adv Manuf Technol

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Impact of a Multi-step Heat Treatment on Different Manufacturing Routes of 18CrNiMo7-6 Steel

Cited by 10 publications

References 15 publications

Recrystallization Mechanism and Processing Map of 18CrNiMo7-6 Alloy Steel during Hot Deformation

Recrystallization Mechanism and Processing Map of 18CrNiMo7-6 Alloy Steel during Hot Deformation

Evaluation of Surface Integrity in 18CrNiMo7-6 Steel after Multiple Abrasive Waterjet Peening Process

Numerical studies on the parameter effect and controlling method of the residual stress in the remanufactured 17CrNiMo6 heavy-duty gear by the laser cladding deposition

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