Microstructural association between mechanical behavior with bending fracture surfaces in Astaloy CrA sintered parts alloyed by Cu and C

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dc.citation.epage986en_US
dc.citation.spage979en_US
dc.citation.volumeNumber55en_US
dc.contributor.authorKhorsand H.en_US
dc.contributor.authorGhaffari, M.en_US
dc.contributor.authorGanjeh, E.en_US
dc.date.accessioned2016-02-08T11:00:24Z
dc.date.available2016-02-08T11:00:24Z
dc.date.issued2014en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractApplication of powder metallurgy technique, a method presenting both economic and technical concepts for producing sintered parts, has been expanding in automobile and other engineering industries. Powder metallurgy parts usually possess residual porosity in their microstructures deteriorating mechanical performance. There have been many solutions to increasing of strength in these parts such as applying different heat treatment or adding alloying elements. It is well known that Fe-Cu-C is the one of main alloying system for both increasing the strength and decreasing cost of them. In this study, the microstructure, mechanical properties (transverse rapture strength and hardness), crack behavior and fracture modes of a low alloy Fe-Cr powder (Astaloy CrA) with different amount of copper (0, 1 and 2. wt.%) and carbon, in form of graphite (0.45, 0.6 and 0.8. wt.%) sintered at conventional condition have been investigated. Microstructural evolution showed adding copper and graphite as alloying elements could generate widespread of strength (857-1380. MPa) and hardness (170-295 HV5). Developing different phases in microstructure was the main reason for various mechanical properties. Crack coalescence phenomenon leads to fracturing with ductile (at sinter-necks) and brittle morphology. Micro-mechanism of fracture related to transparticle and interparticle crack propagation. © 2013 Elsevier Ltd.en_US
dc.identifier.doi10.1016/j.matdes.2013.10.072en_US
dc.identifier.issn0261-3069
dc.identifier.urihttp://hdl.handle.net/11693/26481
dc.language.isoEnglishen_US
dc.publisherElsevier Ltden_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.matdes.2013.10.072en_US
dc.source.titleMaterials and Designen_US
dc.subjectFractureen_US
dc.subjectMicrostructureen_US
dc.subjectPowder metallurgyen_US
dc.subjectTransverse rapture strengthen_US
dc.subjectAlloyingen_US
dc.subjectCopperen_US
dc.subjectCracksen_US
dc.subjectFractureen_US
dc.subjectGraphiteen_US
dc.subjectHardnessen_US
dc.subjectMicrostructureen_US
dc.subjectPowder metallurgyen_US
dc.subjectSinteringen_US
dc.subjectAdding alloying elementsen_US
dc.subjectEngineering industriesen_US
dc.subjectMechanical behavioren_US
dc.subjectMechanical performanceen_US
dc.subjectPowder metallurgy partsen_US
dc.subjectPowder metallurgy techniquesen_US
dc.subjectResidual porosityen_US
dc.subjectTransverse rapture strengthen_US
dc.subjectAlloying elementsen_US
dc.titleMicrostructural association between mechanical behavior with bending fracture surfaces in Astaloy CrA sintered parts alloyed by Cu and Cen_US
dc.typeArticleen_US
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