Influence of Cu content on the mechanical properties and corrosion resistance of Mg-Zn-Ca bulk metallic glasses

Autor:	Chang Li, Song Jingguo, Zhu Jian, Xidong Hui, Xiaohua Chen, Zhao Yanfeng
Rok vydání:	2014
Předmět:	Materials science Amorphous metal Mechanical Engineering Alloy Metallurgy Metals and Alloys engineering.material Microstructure Casting Corrosion Compressive strength Flexural strength Geochemistry and Petrology Mechanics of Materials Materials Chemistry engineering Thermal stability
Zdroj:	International Journal of Minerals, Metallurgy, and Materials. 21:487-493
ISSN:	1869-103X 1674-4799
Popis:	Mg66.2Zn28.8Ca5)100−xCux (at%, x = 0, 1, 3, and 5) bulk metallic glasses (BMGs) of 2 mm in diameter were prepared by the con- ventional copper mold injection casting method. Besides, the influence of Cu content on the microstructure, thermal stability, mechanical properties, and corrosion behavior of Mg−Zn−Ca BMGs was investigated. It is found that the addition of Cu decreases the glass-forming ability of Mg−Zn−Ca BMGs. Crystalline phases are precipitated at a higher Cu content, larger than 3at%. The compressive fracture strength of Mg−Zn−Ca BMGs is enhanced by the addition of Cu. With the formation of in-situ composites, the compressive strength of the Mg−Zn−Ca alloy with 3at% Cu reaches 979 MPa, which is the highest strength among the Mg−Zn−Ca alloys. Furthermore, the addition of Cu also results in the increase of corrosion potential and the decrease of corrosion current density in Mg−Zn−Ca BMGs, thereby delaying their biodegradability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::331d152485d6ab0739f694adc4a36b6a https://doi.org/10.1007/s12613-014-0933-6 Zobrazit plný text záznamu Full text from SpringerLink