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Stress relaxation of compacted graphite iron alloyed with molybdenum
University of Miskolc, Hungary.
RISE, SP – Sveriges Tekniska Forskningsinstitut.ORCID iD: 0000-0002-6657-1792
Scania, Sweden.
Jönköping University, Sweden.
2013 (English)In: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, Vol. 26, no 1, p. 51-57Article in journal (Refereed) Published
Abstract [en]

In a previous study, the thermomechanical fatigue resistance of four compacted graphite irons (CGIs) and one grey cast iron was investigated. The molybdenum content of the four CGIs varied between 0 and 1.01 wt-%. It was observed that during thermal cycling, the maximum value of the compressive stress continuously decreased while the value of the maximum tensile stress continuously increased. The continuous decrease in compressive stresses showed that stress relaxation occurs at elevated temperatures during thermal cycling. The goal of the present investigation was to investigate the phenomenon of stress relaxation at elevated temperatures. The tests were performed at 350 and 600uC respectively. The results of the stress relaxation tests performed at 600uC showed the same trend observed at thermomechanical fatigue testing. The tests showed that additions of molybdenum improved the fatigue resistance of CGI by lowering the stress relaxation rate.

Place, publisher, year, edition, pages
2013. Vol. 26, no 1, p. 51-57
Keywords [en]
Compacted graphite iron, Molybdenum alloying, Stress relaxation, Thermomechanical fatigue, Elevated temperature, Grey cast iron, Molybdenum content, Stress relaxation rate, Stress relaxation tests, Thermo mechanical fatigues (TMF), Compressive stress, Fatigue of materials, Fatigue testing, Graphite, Iron, Molybdenum, Thermal cycling
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:ri:diva-49955DOI: 10.1179/1743133612Y.0000000036Scopus ID: 2-s2.0-84872693720OAI: oai:DiVA.org:ri-49955DiVA, id: diva2:1484480
Available from: 2020-10-29 Created: 2020-10-29 Last updated: 2023-06-08Bibliographically approved

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Sjögren, Torsten

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