Increasing the fatigue limit of a bearing steel by dynamic strain ageing

Kerscher, Eberhard; Lang, Karl‐Heinz; Vöhringer, O.; Löhe, D.

doi:10.1016/j.ijfatigue.2008.02.003

Cited by 29 publications

(21 citation statements)

References 7 publications

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“…Only through simulation of the complete use-case can one decide whether this kind of material optimization is applicable or not. As a sidenote, in certain applications DSA has been even used to improve fatigue life [49,67].…”

Section: Practical Implicationsmentioning

confidence: 99%

Investigation on dynamic strain aging behaviour of ferritic-pearlitic ductile cast irons

Jalava

Laine²,

Vaara³

et al. 2020

Materials Science and Technology

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Publication 1: Elevated temperature thermal conductivities of some as-cast and austempered cast irons. In this study, first author contribution consists of thermal conductivity testing, design of experiments and data analysis. Co-authors took part in design of experiments, heat treatments and alloy production. The results were interpreted and commented together by the co-authors. Publication 2: Effect of Silicon and Microstructure on Spheroidal Graphite Cast Iron Thermal Conductivity at Elevated Temperatures. In this study, first author contribution consists of thermal conductivity testing, design of experiments, heat treatments and regression modelling. Co-authors took part in design of experiments, heat treatments and alloy production. The results were interpreted together by the co-authors. Publication 3: Investigations on dynamic strain aging behavior of ferriticpearlitic ductile irons. In this study, first author contribution consists of data analysis and interpretation. Co-authors took part in design of experiments, heat treatments, alloy production and experimental setup. The results were interpreted and commented together by the co-authors.

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Section: Practical Implicationsmentioning

confidence: 99%

Investigation on dynamic strain aging behaviour of ferritic-pearlitic ductile cast irons

Jalava

Laine²,

Vaara³

et al. 2020

Materials Science and Technology

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“…Even though, they still are the preferred method in practical applications to avoid coaxing, especially in ferrous alloys, which may induce fatigue strengthening under cyclic loading below but close to the fatigue limit. It may be a problem, for instance, when using Prot's incremental method to measure fatigue limits [3][4].…”

Section: Introductionmentioning

confidence: 99%

On the use of thermographic method to measure fatigue limits

Bandeira

Kenedi

Castro

2018

Lat. Am. j. solids struct.

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Traditional fatigue limit measurements are expensive and time consuming, requiring a large number of specimens and a long time to be completed. An alternative approach is used in this work to obtain the fatigue limit of a cold drawn steel, in a rotating bending machine, by monitoring temperature variations induced by different load range levels in just a few specimens. Comparisons with Dixon's traditional up-and-down method confirm that this thermographic approach is indeed a much more efficient, faster, and cheaper method to obtain fatigue limits.

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“…It was found that no change in hardness was found, however the fatigue strength was enhanced by the shortened heat treatment process due to the homogenous dispersion of a small amount of austenite. The fatigue life of a bearing steel (SAE52100) by dynamic strain ageing has been investigated in a previous study [ 9 ]. It was reported that the dynamic strain ageing treatment introduced a more stable dislocation structure by increasing the mobile dislocation density and locking of these dislocations by diffusing carbon atoms and subsequently forming carbides.…”

Section: Introductionmentioning

confidence: 99%

Bearings Downsizing by Strength Enhancement and Service Life Extension

Amanov¹,

Darisuren²,

Pyun³

2018

Materials

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Slim bearings are used widely in aircrafts, robots, wind turbines, and industrial machineries, where their size and weight are very important for the performance of a system. The common materials of slim bearings for robots and industrial machineries are based on SAE52110 bearing steel, and special heat treatment and a super polishing process are used and adapted to improve the rolling contact fatigue (RCF) strength of bearings. The improvement in RCF strength, depending on contact stress, surface hardness, and the friction behavior before and after ultrasonic nanocrystalline surface modification (UNSM) treatment was validated. Simple analysis shows that these improvements can reduce the size and weight of slim bearings down to about 3.40–21.25% and 14.3–26.05%, respectively. Hence, this UNSM technology is an opportunity to implement cost-saving and energy consuming super-polishing, a heat treatment process, and to reduce the size and weight of slim bearings.

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Increasing the fatigue limit of a bearing steel by dynamic strain ageing

Cited by 29 publications

References 7 publications

Investigation on dynamic strain aging behaviour of ferritic-pearlitic ductile cast irons

Investigation on dynamic strain aging behaviour of ferritic-pearlitic ductile cast irons

On the use of thermographic method to measure fatigue limits

Bearings Downsizing by Strength Enhancement and Service Life Extension

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