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dc.contributor.authorFirrao, D
dc.contributor.authorMatteis, P
dc.contributor.authorMortarino, GMM
dc.contributor.authorSilva, G
dc.contributor.authorRivolta, B
dc.contributor.authorGerosa, R
dc.contributor.authorPinasco, MR
dc.contributor.authorIenco, MG
dc.contributor.authorFabbreschi, M
dc.contributor.authorRusso Spena, P
dc.contributor.editor12th, International Conference on Fracture
dc.date.accessioned2015-11-26T11:23:35Z
dc.date.available2015-11-26T11:23:35Z
dc.date.issued2009
dc.identifier.isbn9781617382277
dc.identifier.urihttp://hdl.handle.net/10863/1469
dc.description.abstractThe standard ISO 1.2738 medium-carbon low-alloy steel have long been used to fabricate plastic molds for large automotive components (bumpers and dashboards) by machining large previously quenched and tempered steel blooms. Due to the bloom size, the heat treatment yields mechanical properties and mixed microstructures continuously varying from surface to core. Alternative steel grades, including both non-standard microalloyed steels, designed for the same production cycle, and precipitation hardening steels, were recently proposed. Results of a large experimental effort concerning the fracture toughness and fatigue properties (as well as other mechanical properties) of plastic mold steel blooms are presented and commented, also on the basis of microstructural and fractographic analysis. These steels generally exhibit low fracture toughness values; in the traditional quench and temper production cycle this characteristic arises from the presence of mixed microstructures, whereas in the precipitation hardened steel the brittleness probably stems from the carbide precipitation strengthening mechanism.en_US
dc.publisher12th International Conference on Fractureen_US
dc.titleFatigue and fracture toughness properties of large-bloom mixed-microstructure heat-treated steelsen_US
dc.typeBook chapteren_US
dc.date.updated2015-11-17T17:42:59Z
dc.publication.title12th International Conference on Fracture 2009, ICF-12; Ottawa, ON, Canada; 12 - 17 July 2009, vol. 7
dc.description.fulltextopenen_US


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