Corrosion behaviour of an industrial shot-peened and coated automotive spring steel AISI 9254

Yar, Mazher Ahmed; Wang, Ying; Zhou, Xiaorong; Soutis, C.

doi:10.1080/1478422x.2018.1511328

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…The helical spring failure is a growing problem and is most often caused by corrosion . The loss of the wire's cross section due to corrosion leads to a decrease in the structural performance in terms of strength, stiffness and ductility.…”

Section: Introductionmentioning

confidence: 95%

“…The helical spring failure is a growing problem and is most often caused by corrosion. 8 The loss of the wire's cross section due to corrosion leads to a decrease in the structural performance in terms of strength, stiffness and ductility. In addition, corrosion can produce a significant reduction in fatigue strength, mainly in the corroded region with high stress concentrations.…”

Section: Introductionmentioning

confidence: 99%

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Modelling corrosion effect on stiffness of automotive suspension springs

Wang

Soutis

Yar

et al. 2019

Mat Design Process Comm

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This work presents a numerical investigation that correlates the stiffness changes of corroded suspension springs with the amount of spring wire's cross section loss, the degree of surface corrosion (DSC), and corrosion spatial distribution. The aim is to provide understanding of corrosion damage characteristics and subsequent effect on the load‐deflection behaviour of a helical compression spring. A 3D non‐linear finite element (FE) model was developed which is used to simulate the mechanical response of the spring and to determine its ageing behaviour. The changes in stiffness (percentage loss) in relation to corrosion depth, corrosion spatial distribution and DSC were studied in great detail. Mechanical tests were conducted using a specially designed spring testing machine and the data confirmed the validity of the FE model. To the authors' knowledge limited work has been reported, especially on corroded helical springs, that present stiffness loss diagrams as a function of time.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Modelling corrosion effect on stiffness of automotive suspension springs

Wang

Soutis

Yar

et al. 2019

Mat Design Process Comm

Self Cite

View full text Add to dashboard Cite

show abstract

“…A considerable amount of literature has been published to study the effect of the anticorrosive layer (e.g. [48,49]).…”

Section: Diffusion and Breakdown Of Anticorrosive Layermentioning

confidence: 99%

Simulation of pit interactions of multi-pit corrosion under an anticorrosive coating with a three-dimensional cellular automata model

Liu

Lee

Chang

2021

Modelling Simul. Mater. Sci. Eng.

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To study the corrosion process and the pit interactions of multi-pit corrosion covered by an anticorrosive coating, we present a three-dimensional cellular automata model that is efficient of modeling multi-pit corrosion the spatial separation of anodic and cathodic semireactions results in the interaction of pits. Through the corrosion simulation of different number of pits, when there are more than one pits, some pits grow much faster than single-pit case, while some other pits filled with basic ions may stop growing for a long time. Therefore, the heterogeneous distribution of pH in multi-pit corrosion can be observed in the simulation results, and they are shown to be consistent with experimental studies. Specially, the concentration of basic ions in some areas can be seen both from the modal and the experimental results. The permeability of breakdown anticorrosive coating is considered in the model, and the results show that it plays an important role in the corrosion process.

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“…Corrosion is a common cause of suspension springs degradation. It causes a weakening of their mechanical properties and a decrease in the ultimate life [5]. Corrosive damage caused by the external environment begins on the surface of the springs and, spreading over time, can be the root cause of fatigue fracture.…”

Section: Analysis Of Modern Information Sources On the Theme Of The Papermentioning

confidence: 99%

Failure analysis of a motor vehicle suspension helical spring

Bohun¹,

Плешаков²,

Shvachko³

2020

Ukr. j. mech. eng. mater. sci.

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The purpose of this work is to reveal the cause of the failure of the motor vehicle rear suspension barrel-shaped spring with the progressive elasticity characteristic and predict measures to increase the lifetime of springs of this type. The fracture of the spring occurred on the middle coil, which operates under conditions of more severe stress in comparison with other coils. The chemical composition of the spring material, determined by X-ray fluorescence spectral and microstructural analyzes, corresponded to chromium-silicon steel 54SiCr6. In terms of structure and mechanical properties, the spring material met the standards. No traces of decarburization were detected, and no crack initiation, caused by non-metallic inclusions, was found in the material of the fractured spring. Macroscopic examination of the spring surface did not reveal any cracks, scratches, dents, traces of blows with stones and marks of spring coiling tool. Instead, extensive areas of exfoliation of the protective coating were found. The metallographic analysis revealed selective corrosion in the form of pitting damage in places of exfoliation of the protective coating. The fatigue crack propagates from the certain deep pit with the reorientation of the crack plane along the spiral surface to the central axis of the coil wire. After depletion of the safety margin, the spring broke down quickly. The fast fracture zone contains steps of the river pattern formed due to the spiral reorientation of the fracture surface. The research can be used to understand the importance of adhesive strength and wear resistance of protective coatings on the spring surface. Their local exfoliation causes subsequent corrosion damage to the spring, which stimulates its fatigue fracture.

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Corrosion behaviour of an industrial shot-peened and coated automotive spring steel AISI 9254

Cited by 7 publications

References 22 publications

Modelling corrosion effect on stiffness of automotive suspension springs

Modelling corrosion effect on stiffness of automotive suspension springs

Simulation of pit interactions of multi-pit corrosion under an anticorrosive coating with a three-dimensional cellular automata model

Failure analysis of a motor vehicle suspension helical spring

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