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Faramarz Fereshteh-Saniee

Faramarz Fereshteh-Saniee

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 7801413824
HIndex:
Faculty: Faculty of Engineering
Address:
Phone:

Research

Title
Superior ductility and strength enhancement of ZK60 magnesium sheets processed by a combination of repeated upsetting and forward extrusion
Type
JournalPaper
Keywords
RepeatedUpsetting(RU)process Forwardsheetextrusion ZK60 Mgalloy Mechanical properties Superior ductility
Year
2016
Journal MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
DOI
Researchers Faramarz Fereshteh-Saniee ، ، ، Reza Mahmudi

Abstract

This researchworkisconcernedwithcreationofZK60Mgsheetsbyvariouscombinationsofthere- peated upsetting(RU)andforwardextrusion(Ex)operations.TheRUprocesswasconductedwithdif- ferent passesandat250 °C, whereasthesubsequentforwardextrusionwasperformedat220 °C. Complementary tensileteststogetherwithfractography,andmicrostructuralandtexturalstudieswere carried outinordertoinvestigatetheinfluence oftheprocesstypesandconditionsonthematerial properties ofthesheetproducts.ItwasfoundthatcombinationoftheRUandExoperationscouldresult in ductileZK60sheetswithimprovedstrengthandstrainhardeningcapacity.Themaximumelongation wasachievedafter3passesofRUfollowedbyExprocess.Thisprocessingroutealsoresultedinbalanced ultimate strengthsinbothextrusionandtransversedirectionswithalmostthehigheststrainhardening capacity.TheeffectsofRUnumberofpassesandforwardextrusionprocessonthemicrostructures, textures,mechanicalpropertiesandthefractureoftheZK60sheetswerealsoinvestigatedand,basedon the experimental findings obtained;severalimportantconclusionsweredrawnandexplainedinthis article.