A comparison of rolling contact fatigue behaviour of 17NiCrMo6‐4 case‐hardened disc specimens and gears

Terrin, Andrea; Meneghetti, Giovanni

doi:10.1111/ffe.12867

Cited by 10 publications

(8 citation statements)

References 33 publications

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“…This indicates that a further increase in |σ max | over |σ max,t | becomes less effective in increasing (N f ) min . This theoretical finding is in accordance with experimental results showing that RS induced by additional shot peening is less effective in preventing fatigue in 17NiVrMo6-4 steel [48,49] and Austempered ductile iron [50].…”

Section: Effect On (N F ) Min When the Rs Distribution Deviates From supporting

confidence: 91%

Residual Stress Distribution Design for Gear Surfaces Based on Genetic Algorithm Optimization

et al. 2021

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The rolling contact fatigue of gear surfaces in a heavy loader gearbox is investigated under various working conditions using the critical plane-based multiaxial Fatemi–Socie criterion. The mechanism for residual stress to increase the fatigue initiation life is that the compressive residual stress has a negative normal component on the critical plane. Based on this mechanism, the genetic algorithm is used to search the optimum residual stress distribution that can maximize the fatigue initiation life for a wide range of working conditions. The optimum residual stress distribution is more effective in increasing the fatigue initiation life when the friction coefficient is larger than its critical value, above which the fatigue initiation moves from the subsurface to the surface. Finally, the effect on the fatigue initiation life when the residual stress distribution deviates from the optimum distribution is analyzed. A sound physical explanation for this effect is provided. This yields a useful guideline to design the residual stress distribution.

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Section: Effect On (N F ) Min When the Rs Distribution Deviates From supporting

confidence: 91%

Residual Stress Distribution Design for Gear Surfaces Based on Genetic Algorithm Optimization

et al. 2021

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“…The diversity of investigations which focus on the effects of this kind of surface strengthening treatments on the gear micropitting behavior [72] are outlined. Terrin and Meneghetti [73] studied the contact fatigue on both shot-peened and un-peened 17NiCrMo6-4 case-hardening gear steel specimens through a two-disc test rig. No obvious improvement of micropitting resistance was found between the shot-peened and un-peened specimens.…”

Section: Gear Surface Microscopic Topographies and Surface Treatmentsmentioning

confidence: 99%

A Review on Micropitting Studies of Steel Gears

Liu

Zhu

et al. 2019

Coatings

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With the mounting application of carburized or case-hardening gears and higher requirements of heavy-load, high-speed in mechanical systems such as wind turbines, helicopters, ships, etc., contact fatigue issues of gears are becoming more preponderant. Recently, significant improvements have been made on the gear manufacturing process to control subsurface-initiated failures, hence, gear surface-initiated damages, such as micropitting, should be given more attention. The diversity of the influence factors, including gear materials, surface topographies, lubrication properties, working conditions, etc., are necessary to be taken into account when analyzing gear micropitting behaviors. Although remarkable developments in micropitting studies have been achieved recently by many researchers and engineers on both theoretical and experimental fields, large amounts of investigations are yet to be further launched to thoroughly understand the micropitting mechanism. This work reviews recent relevant studies on the micropitting of steel gears, especially the competitive phenomenon that occurs among several contact fatigue failure modes when considering gear tooth surface wear evolution. Meanwhile, the corresponding recent research results about gear micropitting issues obtained by the authors are also displayed for more detailed explanations.

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“…The production of gradient structure (GS), which consists of a gradient grain‐size transition surface layer and a coarse‐grained (CGed) interior, has been recognized as an effective synthesis strategy to extend the fatigue lifetime of a structural component 1,2 . The GS is traditionally fabricated by shot peening that is a very simple and flexible surface plastic deformation (SPD) method viable for structural engineering applications 3–5 .…”

Section: Introductionmentioning

confidence: 99%

Low‐cycle fatigue behavior of gradient structured austenitic stainless steels under high strain amplitude

Zhou

et al. 2022

Fatigue Fract Eng Mat Struct

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The present work focuses on the investigation of low-cycle fatigue performance of gradient structured (GSed) 316 austenitic steels under high strain amplitude loading conditions. The results show that GSed steels exhibit inherently lower fatigue life than their coarse-grained counterparts. The analyses using energy-based criterion reveals that the fatigue life decrement for GSed steels is attributed to the reduced capability of damage accumulation and the lack of ability to effective damage diffusion. The former is due to the worsened plastic deformation potential and the latter to the degraded surface plastic deformation uniformity.

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A comparison of rolling contact fatigue behaviour of 17NiCrMo6‐4 case‐hardened disc specimens and gears

Cited by 10 publications

References 33 publications

Residual Stress Distribution Design for Gear Surfaces Based on Genetic Algorithm Optimization

Residual Stress Distribution Design for Gear Surfaces Based on Genetic Algorithm Optimization

A Review on Micropitting Studies of Steel Gears

Low‐cycle fatigue behavior of gradient structured austenitic stainless steels under high strain amplitude

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