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Non-metallic inclusion and their effect on fatigue strength for case-hardened carbon steel in gears
Linnaeus University, Faculty of Technology, Department of Mechanical Engineering.ORCID iD: 0000-0003-0453-0503
Linnaeus University, Faculty of Technology, Department of Mechanical Engineering.
Linnaeus University, Faculty of Technology, Department of Mechanical Engineering.
China Euro Vehicle Technology AB, Sweden.
2018 (English)In: TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings. TMS 2018, Springer, 2018, p. 123-133Conference paper, Published paper (Refereed)
Abstract [en]

Steel is a very essential structural material and its production worldwide has shown significant increase over the last years. In steels there always exist a large number of inclusions which can have a degrading effect on the fatigue properties. This study is focused on the link between the characteristics of non-metallic inclusions and how they affect fatigue strength of the standardized case-hardened carbon steel 20MnCr5 and a version of this steel with a more favorable inclusion distribution, a so-called Clean steel. For the evaluation of the mechanical properties the test result from rotary bending tests are compared and an improvement by 37.5% in fatigue strength can be noted between the different steels. The new performed ultrasonic tests illustrate the difference in the size of defects in materials with different manufacturing processes and degree of reduction. By studying international and European standards for non-destructive testing and investigation of alloy compounds, the current material specification can be adjusted. © The Minerals, Metals & Materials Society 2018.

Place, publisher, year, edition, pages
Springer, 2018. p. 123-133
Series
The Minerals, Metals & Materials Series, ISSN 2367-1181, E-ISSN 2367-1696
Keywords [en]
Clean-steel, Inclusions, Mechanical properties, Standard, Steel, Ultrasonic test, Bending tests, Binary alloys, Carbon steel, Chromium alloys, Fatigue of materials, Fatigue testing, Hardening, Manganese alloys, Nondestructive examination, Standards, Clean steel, Degree of reduction, European Standards, Inclusion distribution, Manufacturing process, Material specification, Non destructive testing, Non-metallic inclusions, Ultrasonic testing
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Technology (byts ev till Engineering), Mechanical Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-83521DOI: 10.1007/978-3-319-72526-0_12Scopus ID: 2-s2.0-85044442225ISBN: 9783319725253 (print)OAI: oai:DiVA.org:lnu-83521DiVA, id: diva2:1318423
Conference
TMS 2018147th Annual Meeting & Exhibition, March 11-15 2018, Phoenix, Arizona
Available from: 2019-05-27 Created: 2019-05-27 Last updated: 2019-05-28Bibliographically approved

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Dugic, Izudin

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