Enhanced mechanical and corrosion properties of NZ20K alloy by double extrusion and aging processes for biomedical applications. (20th March 2016)

• Record Type: Journal Article
• Authors: Chen, K.; Zhang, X. B.; Dai, J. W.; Fei, Y.; Wang, Z. Z.
• Is Part Of: Materials technology. Volume 31:Number 4(2016)
• Page Start: 210
• Page End: 215
• Publication Date: 2016-03-20
• Subjects: Biomaterials -- Magnesium alloys -- Double extrusion and aging processes -- Mechanical properties -- Corrosion resistance; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Technological innovations -- Periodicals; 620.1105
• DOI: 10.1179/1753555715Y.0000000043
• Languages: English
• ISSNs: 1066-7857

Abstract

Abstract : In order to refine and homogenise microstructure and to improve mechanical properties of the magnesium alloys for biomedical application, the Mg–2.0Nd–0.1Zn–0.4Zr (wt-%, NZ20K) alloy with low amount of alloying elements was processed by double extrusion and aging processes (DEAP). Compared to the NZ20K alloy after once extrusion and aging processes (OEAP), the microstructure becomes finer and more homogeneous, and the elongation is raised up ∼121% by DEAP. Moreover, the yield strength and ultimate tensile strength are improved ∼27 and ∼16% respectively. Additionally, the corrosion rate of the NZ20K alloy by the DEAP is a little slower than that of the OEAP. It can be concluded that the mechanical properties, as well as the corrosion resistance of the NZ20K alloy, are able to be enhanced by the double extrusion and aging processes.