Bending Fatigue Behavior of Blast Cleaned Grey Cast Iron
2016 (English)In: Residual Stresses 2016: ICRS-10, Materials Research Proceedings 2 (2016), 2016, 193-198 p.Conference paper (Refereed)
This paper presents a detailed study on the effect of an industrial blast cleaning process on the fatigue behavior of a grey cast iron with regard to the residual stresses and microstructural changes induced by the process. A comparison was also made to the effect of a machining operation which removed the casting skin layer. The blast cleaning process was found to greatly improve the fatigue resistance in both the low and high cycle regimes with a 75% increase in the fatigue limit. Xray diffraction measurements and scanning electron microscopic analyses showed that the improvement was mainly attributed to compressive residual stresses in a surface layer up to 800 μm in thickness in the blast cleaned specimens. The machining also gave better fatigue performance with a 30% increase in the fatigue limit, which was ascribed to the removal of the weaker casting skin layer.
Place, publisher, year, edition, pages
2016. 193-198 p.
Cast Iron, Blast Cleaning, Machining, Bending Fatigue, Residual Stress
Materials Engineering Manufacturing, Surface and Joining Technology Applied Mechanics Composite Science and Engineering
IdentifiersURN: urn:nbn:se:liu:diva-134363DOI: 10.21741/9781945291173-33OAI: oai:DiVA.org:liu-134363DiVA: diva2:1072160
International Conference Residual Stress ICRS-10, 4-8 July 2016, Sydney, Australien.