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dc.contributor.authorNaeem, Haider T.
dc.contributor.authorKhairel Rafezi, Ahmad, Dr.
dc.contributor.authorKahtan Sadiq, Muhammed, Dr
dc.contributor.authorAzmi, Rahmat, Prof.
dc.date.accessioned2015-03-05T07:59:29Z
dc.date.available2015-03-05T07:59:29Z
dc.date.issued2014-04
dc.identifier.citationAdvanced Materials Research, vol.925, 2014, pages 258-262en_US
dc.identifier.issn1662-8985
dc.identifier.urihttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/39124
dc.descriptionLink to publisher's homepage at http://www.ttp.net/en_US
dc.description.abstractIn this study the evolution of the retrogression and reaging (RRA) heat treatment process on microstructure and mechanical properties of AA 7075 Al-alloys which produced by semi-direct chill (DC) casting process were investigated. Al-Zn-Mg-Cu alloys were homogenized at different heat treatment conditions, aged at 120°C for 24 h (T6), and retrogressed at 180°C for 30 min then re-aged at 120°C for 24 h (RRA). The results showed that this three-step process of the heat treatments, the mechanical properties of alloys was substantially improved. The highest ultimate tensile strength and Vickers hardness attained for the retrogression and re-aging about 530 MPa and 223 HV respectively. The precipitation strengthening is responsible about improve the strength under impact the retrogression and re-aging process.en_US
dc.language.isoenen_US
dc.publisherTrans Tech Publications Inc.en_US
dc.subjectAluminum alloyen_US
dc.subjectHeat treatmenten_US
dc.subjectMicrostructuralen_US
dc.subjectUltimate Tensile Strength (UTS)en_US
dc.titleEvolution of the retrogression and reaging treatment on microstructure and properties of Aluminum Alloy (Al-Zn-Mg-Cu)en_US
dc.typeArticleen_US
dc.identifier.urlhttp://www.scientific.net/AMR.925.258
dc.contributor.urlhaider_neem@yahoo.comen_US


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