The effect of Cerium addition on microstructure and mechanical properties of high pressure die cast Mg-5Sn alloy

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2017.11.057· OSTI ID:22804877

Güven, Yarkadas ^[1]; Levent Cenk, Kumruoglu ^[2]; Hüseyin, Sevik ^[1]

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1. Mersin University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Mersin 33343 (Turkey)
2. Cumhuriyet University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Sivas 58140 (Turkey)

Highlights: • The alloying additive has good grain refinement effect. • The addition of Ce to the Mg-5Sn alloy led to the formation of the new intermetallic phases CeMgSn and Ce{sub 5}Sn{sub 4}. • The hardness, yield and tensile strength of Mg-5Sn alloy were improved with addition of Ce. • The elongation of Mg-5Sn was increased up to 5wt.%Ce addition, and then decreased with addition of 7 wt.%Ce. • The yield and tensile strength of the Ce added alloy were higher than those of the base alloy at elevated temperatures. - Abstract: The effect of Cerium addition to Mg-5Sn alloy and its influence on the microstructure and mechanical properties of the alloy were investigated in this work. The microstructural investigations indicate that the alloying addition of Ce leads to effective grain refinement. Also, it was observed that adding Ce to the Mg-5Sn alloy results in the formation of new phases in the alloy such as Ce{sub 5}Sn{sub 4} and CeMgSn. These intermetallic phases were considered to be effective on the enhancement of the hardness of Mg-5Sn alloy. Furthermore, the tensile test results at room temperature and elevated temperatures revealed that the yield and tensile strength of the Ce added alloy were higher than those of the base alloy. The elongation was also improved up to 5 wt% Ce addition while higher amounts decreased the elongation both at room and elevated temperatures.

• OSTI ID: 22804877
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 136; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BINARY ALLOY SYSTEMS
CERIUM ADDITIONS
ELONGATION
GRAIN REFINEMENT
HARDNESS
INTERMETALLIC COMPOUNDS
MAGNESIUM COMPOUNDS
MECHANICAL TESTS
MICROSTRUCTURE
TENSILE PROPERTIES
TIN COMPOUNDS