{"title":"Role of Cerium on the creep properties of the Mg-Sn-Al based alloys","authors":"Aslı Önür, Gülşah Germen Tutaş, Hüseyin Şevik","doi":"10.1080/13640461.2020.1853929","DOIUrl":null,"url":null,"abstract":"ABSTRACT In the present study, the effect of Ce alloying element with different quantities (1 and 2 wt.%) on the microstructure and mechanical properties of Mg-5Sn-2Al alloy was investigated. Phase analyses and microstructural studies were carried out using XRD and SEM. It was observed that base alloy was composed of the α-Mg and Mg2Sn intermetallic phase, and after Ce addition Ce5Sn4 intermetallic phase was formed. Also, an increase was detected on the microhardness of the base alloy with increasing Ce addition. The test results showed that Ce addition has no notable effect on the tensile properties at room temperature but has a positive effect at elevated temperatures. Furthermore, creep properties of the Mg-5Sn-2Al alloy were obviously improved by adding Ce. The values of stress exponents and activation energy indicated that the dominant creep mechanisms of the alloys were identified dislocation climb controlled creep..","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":"33 1","pages":"278 - 285"},"PeriodicalIF":1.3000,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/13640461.2020.1853929","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Cast Metals Research","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/13640461.2020.1853929","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 1
Abstract
ABSTRACT In the present study, the effect of Ce alloying element with different quantities (1 and 2 wt.%) on the microstructure and mechanical properties of Mg-5Sn-2Al alloy was investigated. Phase analyses and microstructural studies were carried out using XRD and SEM. It was observed that base alloy was composed of the α-Mg and Mg2Sn intermetallic phase, and after Ce addition Ce5Sn4 intermetallic phase was formed. Also, an increase was detected on the microhardness of the base alloy with increasing Ce addition. The test results showed that Ce addition has no notable effect on the tensile properties at room temperature but has a positive effect at elevated temperatures. Furthermore, creep properties of the Mg-5Sn-2Al alloy were obviously improved by adding Ce. The values of stress exponents and activation energy indicated that the dominant creep mechanisms of the alloys were identified dislocation climb controlled creep..
期刊介绍：
The International Journal of Cast Metals Research is devoted to the dissemination of peer reviewed information on the science and engineering of cast metals, solidification and casting processes. Assured production of high integrity castings requires an integrated approach that optimises casting, mould and gating design; mould materials and binders; alloy composition and microstructure; metal melting, modification and handling; dimensional control; and finishing and post-treatment of the casting. The Journal reports advances in both the fundamental science and materials and production engineering contributing to the successful manufacture of fit for purpose castings.
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