Low Cycle Fatigue behavior of heat treated EN-47 Spring Steel

Kumar, Suresh; SreeArravind, M.; Sainathan, S.; Venkat, A. N. Ch.; Rahulram, S.; Kumar, Sanjiv; Kumaran, S.

doi:10.1016/j.matpr.2020.03.299

Cited by 15 publications

(3 citation statements)

References 13 publications

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“…The hardening process involves raising the steel temperature to about 850°C before quenching it in oil to achieve a martensitic microstructure [7]. On the other hand, tempering follows the hardening process, whereby the temperature will be raised to approximately 500°C for about three hours to improve the ductility of the steel by relieving the internal stresses induced by hardening [8,9]. The soaking time for both austenitising and tempering plays an important role in the outcome of the microstructure and mechanical properties of spring steels [10].…”

Section: Introductionmentioning

confidence: 99%

Using dynamic materials modelling approach to establish critical parameters for hot coiling of spring steels

Matejeke,

Kareem,

Klenam

et al. 2024

Preprint

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This study investigated deformation-induced defects in 55Cr3, 54SiCr6, and 52CrMoV4 spring steels through isothermal compression testing using Gleeble 3500 thermomechanical simulator. The tests were conducted at deformation temperatures of 760, 820, 860, and 920°C, strain rates of 0.1, 1, 5, and 10 s-1, and a total strain of 0.5. Critical parameters leading to defects were established using power dissipation and instability maps. Microstructural examinations were performed on the deformed samples to validate predictions from power dissipation and instability maps. The results indicated that 55Cr3 spring steel exhibited instability at 850-870°C and 0.3-0.6 s-1, resulting in rounded cracks and pores in the microstructure. To avoid these defects, this temperature and strain rate range should be avoided during the coiling of 55Cr3 with a ferritic-pearlitic initial microstructure. Both 54SiCr6 and 52CrMoV4 were identified as potential alternatives to 55Cr3, with both alloys primarily undergoing dynamic recovery similar to 55Cr3. However, 54SiCr6 was recommended as the preferred alternative due to its higher power dissipation efficiency of 33% and an optimum deformation region similar to that of 55Cr3.

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Section: Introductionmentioning

confidence: 99%

Using dynamic materials modelling approach to establish critical parameters for hot coiling of spring steels

Matejeke,

Kareem,

Klenam

et al. 2024

Preprint

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“…Several studies have followed some standard for testing procedures or manufactured tailor made testing devices. Kumar et al [16] tested leaf and coil springs made of EN47 steel which is widely employed landing gears. They followed ASTM E606 standard for low cycle fatigue testing.…”

Section: Introduction (Gi̇ri̇ş)mentioning

confidence: 99%

Pnömatik Tahrikli Çekme Yayı Yorulma Makinesi Tasarım ve İmalatı

Özen

ÇOBANOĞLU>²,

İlhan³

et al. 2022

İmalat Teknolojileri Ve Uygulamaları

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In this study, a tension extension spring fatigue machine was designed and manufactured. The force applied by jaws were driven by pneumatic piston. The air pressure is 6 bar that acquired from local pneumatic network. The maximum force was designed to meet at least 12 kN. Thereby, multiple quantity of extension springs can be tested simultaneously. The applied force can be adjusted pneumatic air pressure adjuster. The fatigue cycles were controlled by an electronic circuit. The machine is also designed to complement desired number of fatigue cycles. For this reason, a counter was also added to controller. Manufacturing of the machine elements and its tolerances were also described in detail.

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“…Spring steel 60Si2Mn is widely used in railway elastic bar fasteners, locomotive leaf springs, suspension springs, and freight car bogies [11][12][13][14][15][16]. As the key material of important parts, it is of great significance to improve the service life of spring steel in harsh environments, such as corrosion, in addition to considering the fatigue performance and the ability of anti-elasticity degradation [17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Corrosion-Resistant Spring Steel Used in High Speed Railway

Zhu

Chen

et al. 2021

Applied Sciences

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Corrosion behavior of 60Si2Mn-A and 60Si2Mn-B in simulated industrial atmospheric environment was investigated by alternate immersion corrosion test and electrochemical method. The phase, morphology, characteristics of corrosion products, and the distribution of Cr, Cu, and Ni in the corrosion products of experimental steel were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and electron probe microanalyzer (EPMA). The results show that the phase of rust layer is Fe3O4 and γ-FeOOH in the early stage and then changes to α-FeOOH and γ-FeOOH in the later stage; the size of the rust layer with corrosion resistance of 60Si2Mn is less than 60Si2Mn; the Cr element accumulates in the rust layer of the experimental steel in the early stage of corrosion resistance; and Cu, Ni, and Cr in the corrosion resistance 60Si2Mn are concentrated in the rust layer near the substrate In the later stage of corrosion. As the corrosion cycle is prolonged, the corrosion potential and the resistance of the rust layer of the experimental steel increases, and the corrosion current decreases; in the same corrosion cycle, the corrosion potential and corrosion resistance of 60Si2Mn-B are greater than 60Si2Mn, and the corrosion current is less than 60Si2Mn.

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Low Cycle Fatigue behavior of heat treated EN-47 Spring Steel

Cited by 15 publications

References 13 publications

Using dynamic materials modelling approach to establish critical parameters for hot coiling of spring steels

Using dynamic materials modelling approach to establish critical parameters for hot coiling of spring steels

Pnömatik Tahrikli Çekme Yayı Yorulma Makinesi Tasarım ve İmalatı

Corrosion Behavior of Corrosion-Resistant Spring Steel Used in High Speed Railway

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