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Straightening of induction hardened shats-inluence on fatigue strength and residual stress
RISE, Swerea, Swerea KIMAB.
RISE, Swerea, Swerea KIMAB.
RISE, Swerea, Swerea KIMAB.
RISE, Swerea, Swerea KIMAB.
2012 (English)In: HTM - Haerterei-Technische Mitteilungen, ISSN 0341101X, Vol. 67, no 3, 179-187 p.Article in journal (Refereed)
Abstract [en]

Straightening of distorted components ater heat treatment is oten a necessary operation. he straightening operation leads to local plastic deformation, which is afecting the residual stress state, the hardness, and ultimately the fatigue strength of the component. he present study evaluates the inluence of a straightening operation on fatigue strength and on the residual stress state of induction hardened shats of steel EN 42CrMo4. A simpliied FEM model was formulated. he model showed that the residual stress state was asymmetric along the circumference of a straightened shat. Fatigue testing was performed in a three point bending and showed that the fatigue strength was reduced by up to some 20 % by heavy straightening. A fracture mechanics model for fatigue crack growth and arrest was developed. he model could be used to predict the fatigue strength of a straightened shat provided that the residual stress state was known. © 2012 Carl Hanser Verlag, München.

Place, publisher, year, edition, pages
2012. Vol. 67, no 3, 179-187 p.
Keyword [en]
42CrMo4, Fatigue crack growth and arrest, Fatigue strength, Fracture mechanics, Induction hardening, Residual stress, Straightening
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-12832Scopus ID: 2-s2.0-84864712982OAI: oai:DiVA.org:ri-12832DiVA: diva2:973025
Available from: 2016-09-22 Created: 2016-09-22Bibliographically approved

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Scopushttp://www.hanser-elibrary.com/doi/abs/10.3139/105.110149
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