Effect of shot-peening and low-plasticity burnishing on the high-cycle fatigue strength of DIN 34CrNiMo6 alloy steel

Avilés, Alexander; Avilés, Rafael; Albizuri, Joseba; Pallarés-Santasmartas, Luis; Rodríguez, Adrián

doi:10.1016/j.ijfatigue.2018.10.014

Cited by 55 publications

(50 citation statements)

References 29 publications

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“…The value of 25.64 MPam 1/2 is very close to the fatigue fracture toughness of this material. Therefore, combined with the reported results of other steels in the VHCF regime, 6,9,12 it can be concluded that the complete formation of fisheye means the beginning of unstable crack growth, and ΔK fisheye can be viewed as the threshold value controlling the unstable growth of subsurface macroscopic crack.…”

Section: Evaluation Of Stress Intensity Factormentioning

confidence: 58%

“…It is known that the fatigue process is extremely sensitive to the surface state of component or part because most of cracks easily initiates from free surfaces of cyclically loaded materials. To avoid this, a number of common surface‐strengthening technologies such as carburizing, nitriding, and shot peening are still widely adopted to raise the fatigue resistance of component or part . However, the VHCF tests show that the surface‐strengthening sometimes cannot improve the fatigue properties of structural materials .…”

Section: Introductionmentioning

confidence: 99%

“…For alloy steels, the interior failure is mainly caused from the interior nonmetallic inclusions or inhomogeneous microstructures . Generally, a fisheye‐shaped crack occurs on the fracture surface, in which a peculiar area, named “fine granular area (FGA)” by coauthor Sakai, sometimes can be observed in the vicinity of crack nucleus, but sometimes it does not occur even in the life regime beyond 10 8 cycles . Some ideas or models such as “Polygonization and debonding,” “Depressive decohesion of spherical carbide,” “Continuous grain refinement,” “Numerous cyclic pressing,” “Hydrogen embrittlement‐assisted cracking,” “Repeating contact of crack surfaces,” and “Stage I‐like crystallographic crack propagation” have been proposed to explain the formation mechanism of the FGA from the various viewpoints.…”

Section: Introductionmentioning

confidence: 99%

“…To avoid this, a number of common surface-strengthening technologies such as carburizing, nitriding, and shot peening are still widely adopted to raise the fatigue resistance of component or part. 6,7 However, the VHCF tests show that the surface-strengthening sometimes cannot improve the fatigue properties of structural materials. 7,8 This is mainly attributed to a transition of crack nucleation site from the surface to the interior or subsurface.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Interior induced fatigue of surface‐strengthened steel under constant and variable loading: Failure mechanism and damage modeling

Sun

Gao

et al. 2019

Fatigue Fract Eng Mat Struct

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Pulsating tension tests with constant amplitude (CA) and variable amplitude (VA) were conducted to investigate the interior failure mechanisms of a carburized Cr steel, and a cumulative damage model with the fine granular area (FGA) formation process was proposed in this study. Such a steel represents the continuously descending S‐N (stress‐number of cycles) curve characteristics associated with inclusion‐FGA‐fisheye induced failure even under variable amplitude. Due to crack growth retardations and accelerations resulted from the interaction effect between stepwise resets of the applied stress, the crack morphology under variable amplitude loading is much rougher. The interior failure mechanism was elucidated in combination with the determination of stress intensity factor values at different crack tips. Based on proposed damage model, the agreement between the predicted and experimental results is fairly good within the factor‐of‐two range.

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Section: Evaluation Of Stress Intensity Factormentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Interior induced fatigue of surface‐strengthened steel under constant and variable loading: Failure mechanism and damage modeling

Sun

Gao

et al. 2019

Fatigue Fract Eng Mat Struct

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“…In additive SLM parts, all topics related to the influence of defects and surface quality are still under study. Some studies [13][14][15] define coefficients to be applied in several surfaces affected by laser power and polishing; other works [16] aimed at building orientation, heat treatment, surface quality, energy density, and service condition of the final product in steel SLMed components. Surface state was and it will be key in fatigue.…”

Section: Introductionmentioning

confidence: 99%

A Methodology to Evaluate the Reliability Impact of the Replacement of Welded Components by Additive Manufacturing Spare Parts

Coro

Macareno

Aguirrebeitia

et al. 2019

Metals

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This article shows a method for inspection scheduling of structures made by additive manufacturing, derived from reliability function evaluations and overhaul inspection findings. The routine was an adaption of an existing method developed by the authors for welded components; in this latter case, the routine used a stochastic defect-propagation analysis for pores and lack of fusion defects of additive manufacturing process, instead of the weld liquation crack. In addition, the authors modified the specific stress-intensity factor for welded components to consider additive manufacturing-related material property variability, defect distributions, flaw-inspection capabilities, and component geometry. The proposed routine evaluated the failure rate and inspection intervals using the first-order reliability method (FORM + Fracture) to alleviate the computational cost of probabilistic defect-propagation analysis. The proposed method is one of the first applying reliability concepts to additive manufacturing (AM) components. This is an important milestone, since in 10 years, additive manufacturing is to be used for 30% of the components in aeroengines. This paper presents an example comparing the reliability and cost of a jet engine, with components either made by additive manufacturing or welded parts; in the process, the reliability AM-key features are found, and overhaul schedules of an airplane fleet made with AM components are defined. The simplicity and performance demonstrated in the comparison make the proposed method a powerful engineering tool for additive manufacturing assessment in aeronautics.

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A Review of Low‐Plasticity Burnishing and Its Applications

Zhang

Yang

et al. 2022

Adv Eng Mater

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Low‐plasticity burnishing (LPB) has been widely used in various industries. In the LPB process, when the ball moves on the material surface, plastic deformation or cold working occurs in the burnished region. Through this process, not only can LPB improve the surface integrity of metallic material components by replacing polishing in some situations, but it can also improve fatigue performance thanks to the low work hardening and the beneficial compressive residual stress (CRS). So far, extensive research has demonstrated the influence of the LPB process on surface integrity and service performance of different metallic materials, such as titanium alloys, aluminum alloys, magnesium alloys, nickel‐based superalloys, stainless steels, and carbon steels. Recent years have witnessed many innovative LPB processes and novel applications. Herein, the working principle of the LPB process is first restated. Following that, how LPB strengthens the material surface and thereby influences the mechanical performance, including the surface quality, residual stress, microstructure, microhardness, fatigue, and wear performance, is reviewed. Furthermore, the difference of surface‐strengthening effect among LPB and other surface mechanical strengthening processes is compared. Finally, the current challenges to LPB are discussed and some suggestions on its development directions are put forward.

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Effect of shot-peening and low-plasticity burnishing on the high-cycle fatigue strength of DIN 34CrNiMo6 alloy steel

Cited by 55 publications

References 29 publications

Interior induced fatigue of surface‐strengthened steel under constant and variable loading: Failure mechanism and damage modeling

Interior induced fatigue of surface‐strengthened steel under constant and variable loading: Failure mechanism and damage modeling

A Methodology to Evaluate the Reliability Impact of the Replacement of Welded Components by Additive Manufacturing Spare Parts

A Review of Low‐Plasticity Burnishing and Its Applications

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