The effect of varying quenching media on cooling time and microstructures of leaf spring steel AISI 5160

Sudiyanto, Anton; Pujiyulianto, Eko

doi:10.1063/5.0066030

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Ten different media were employed, as well as an AISI5160 steel heat-slag to 850Co for 30 minutes. After quenching in oil, the resulting microstructure was approximately 78.4 percent martensite, with the highest martensite percent found to be 94.4 percent after quenching in water plus urea 25g [13]. The influence of a cleaner and more uniform microstructure obtained via electro-slag remitting on the mechanical and dynamic characteristics of spring steel was studied.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Behaviour of Tempered and Isothermal Heat Treated Aisi 5160 Leaf Spring Steel

2023

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The oil quench and temper technique have a lot of benefits for heavy duty spring manufacture since it may expose the best balance of toughness and ductility, as well as increase fatigue life. The current study looked at the fatigue behavior of tempered AISI 5160 leaf spring steel samples at tempering temperatures of 400, 450, 500, 550, and 600 °C, as well as isothermally heat- treated steel samples at 830 °C. All leaf spring steel samples that had undergone thermal tempering and isothermal heat treatment were then tested up to fracture utilizing rotational fatigue test equipment under the effect of various stress levels. All steel samples subjected to tempering heat treatments of 400°C to 600°C showed a decrease in hardness ratings. The Rockwell hardness ratings of the steel samples that treated to isothermal heat treatment increased significantly. Experimental fatigue testing revealed that the values of fatigue resistance for steel samples tempered at (400 and 450) °C temperatures dropped by a small amount. The fatigue resistance values for steel specimens tempered at 500 °C to 600 °C temperatures decreased more than the values for steel samples tempered at 500 to 600 °C temperatures. A fatigue resistance of steel samples that were treated to isothermal heat treatments, on the other hand, increased. Steel samples that were isothermally heat-treated at 830 °C and then chilled in a salt brine solution, on the other hand, showed an increase in fatigue resistance

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Section: Introductionmentioning

confidence: 99%

Fatigue Behaviour of Tempered and Isothermal Heat Treated Aisi 5160 Leaf Spring Steel

2023

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“…Varied cooling capacities of the quenching medium can be achieved by adjusting the concentration of the quenching liquid. This kind of quenching medium also enjoys a sound economic benefit, so it is widely applied in industrial production [22]. With an increase in tempering temperature, the carbides of spring steel undergo a series of changes: dissolution of fine strip-like carbides → nucleation of flake-like carbides → decomposition of flake-like carbides → nucleation of granular carbides → growth of carbide particles.…”

Section: Introductionmentioning

confidence: 99%

Optimising Two-Stage Vacuum Heat Treatment for a High-Strength Micro-Alloyed Steel in Railway Spring Clip Application: Impact on Microstructure and Mechanical Performance

Wang

Pan

et al. 2023

Materials

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The heat treatment process is a vital step for manufacturing high-speed railway spring fasteners. In this study, orthogonal experiments were carried out to obtain reliable optimised heat treatment parameters through a streamlined number of experiments. Results revealed that a better comprehensive mechanical performance could be obtained under the following combination of heat treatment parameters: quenching temperature of 850 °C, holding time of 35 min, medium of 12% polyalkylene glycol (PAG) aqueous solution, tempering temperature of 460 °C, and holding time of 60 min. As one of the most important testing criteria, fatigue performance would be improved with increasing strength. Additionally, a high ratio of martensite to ferrite is proven to improve the fatigue limit more significantly. After this heat treatment process, the metallographic microstructure and mechanical properties satisfy the technical requirements for the high-speed railway practical operation. These findings provide a valuable reference for the practical forming process of spring fasteners.

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The effect of varying quenching media on cooling time and microstructures of leaf spring steel AISI 5160

Cited by 2 publications

References 11 publications

Fatigue Behaviour of Tempered and Isothermal Heat Treated Aisi 5160 Leaf Spring Steel

Fatigue Behaviour of Tempered and Isothermal Heat Treated Aisi 5160 Leaf Spring Steel

Optimising Two-Stage Vacuum Heat Treatment for a High-Strength Micro-Alloyed Steel in Railway Spring Clip Application: Impact on Microstructure and Mechanical Performance

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