Shot Peening Induced Plastic Deformation in Cast Iron - Influence of Graphite Morphology
2014 (English)In: HTM Journal of Heat Treatment and Material, ISSN 1867-2493, EISSN 2194-1831, Vol. 69, no 2, 106-113 p.Article in journal (Refereed) Published
Graphite morphology in cast iron strongly affects the mechanical properties such as: Young's modulus, tensile/compressive strength and cyclic mechanical behaviour. In this study, pearlitic compact graphite iron (CGI) and grey cast iron (GI) have been studied in a scanning electron microscope (SEM) before and after shot peening under different conditions. The plastic deformation behaviour of CGI and GI under different shot peening conditions has been analysed using electron backscattering diffraction (EBSD) and electron contrast channelling imaging (ECCI). EBSD and ECCI revealed that plastic deformation around graphite inclusions depends on the size and shape of the graphite. The different response of CGI and GI to shot peening is explained by the different damping properties of the graphite and the matrix capability for plastic deformation.
Place, publisher, year, edition, pages
München: Carl Hanser Verlag GmbH, 2014. Vol. 69, no 2, 106-113 p.
shot peening, cast iron, graphite morphology, EBSD, residual stress
IdentifiersURN: urn:nbn:se:liu:diva-106715DOI: 10.3139/105.110213OAI: oai:DiVA.org:liu-106715DiVA: diva2:718070
International Conference on Residual Stresses ICRS9, October 7-9, 2012, Garmisch-Partenkirchen, Germany