The Effect of Ni Addition on Microstructure and Mechanical Properties of Cast A356 Alloy Modified With Sr

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dc.authorid315714en_US
dc.contributor.authorYavuzer, Bekir
dc.contributor.author.;, ve diğer
dc.date.accessioned2021-12-23T12:20:42Z
dc.date.available2021-12-23T12:20:42Z
dc.date.issued2021
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractIn this study, casting A356 alloy was pre-alloyed with Ni, and the modification process with Sr was applied by the casting method. The role of Ni on the microstructural and mechanical properties of the produced A356-Ni alloys was investigated. The produced alloys were naturally aged at room temperature for 24 h and artificially aged at 170 degrees C for 10 h. Optical microscopy (OM), scanning electron microscopy (SEM), and X-ray diffractometer were used in microstructure studies of the A356-Ni alloys. Tensile tests and hardness measurements were carried out to determine mechanical properties. Statistical analysis of Weibull distribution on the tensile test results revealed that the characteristic ultimate tensile strength increased due to increasing the amount of alloying elements, while the characteristic percentage elongation is decreased. This was because Al-Si-Fe intermetallic decomposition and Al-Si-Fe-Ni intermetallics were formed, primarily, 0.5 and 1.0 % Ni addition. It was also determined that the Al-Si-Fe-Ni intermetallics with a morphology non-sharp corners formed more homogeneous in the microstructure. But in the A356 alloys with the addition of 1.5 % Ni, Al-Si-Fe-Ni intermetallics are formed in coarser morphology. In A356 alloys, aluminium dendrites, Al-Si eutectic between dendrites, Mg2Si precipitates are formed in the structure by ageing. Depending on the amount of Ni added to the A356 alloy, the tensile strength of the alloys containing 0.5 and 1.0 % Ni is increased.en_US
dc.identifier.citationKovove Mater 59 2021 391–399en_US
dc.identifier.doi10.4149/km_2021_6_391
dc.identifier.issn1748-1325
dc.identifier.scopus2-s2.0-85121901149en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://doi.org/10.4149/km_2021_6_391
dc.identifier.wosWOS:000729651400005en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherRedakcia Kovove Materialyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.subjectA356 alloyen_US
dc.subjectNickelen_US
dc.subjectMicrostructureen_US
dc.subjectT6 heat treatmenten_US
dc.subjectMechanical propertiesen_US
dc.titleThe Effect of Ni Addition on Microstructure and Mechanical Properties of Cast A356 Alloy Modified With Sren_US
dc.typeArticleen_US

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