Extrusion temperature impacts on biometallic Mg-2.0Zn-0.5Zr-3.0Gd (wt%) solid-solution alloy

JOURNAL OF ALLOYS AND COMPOUNDS

卷:739

Article

Yao, Huai^1,2  Wen, Jiuba^1,2  Xiong, Yi^1,2  Lu, Yan¹  Ren, Fengzhang^1,2  Cao, Wei^3,4 

[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Henan, Peoples R China

[2] Collaborat Innovat Ctr Nonferrous Met Henan Prov, Luoyang 471023, Henan, Peoples R China

[3] Univ Oulu, Nano & Mol Syst Res Unit, FIN-90014 Oulu, Finland

[4] Anhui Polytech Univ, Sch Mech & Automot Engn, Wuhu 241000, Peoples R China

关键词: Magnesium alloys;    Microstructure;    Mechanical properties;    Corrosion;    Extrusion;   

DOI  :  10.1016/j.jallcom.2017.12.225

来源: Elsevier

【 摘 要 】

To obtain ideal implant materials, we hot extruded Mg-2.0Zn-0.5Zr-3.0Gd solid-solution alloys, and studied extrusion temperature impacts on materials properties. Fine dynamic recrystallized (DRXed) grains (similar to 5 mu m) and elongated coarse un-dynamic recrystallized (unDRXed) deformed grains turned out at the range of 470-490 degrees C, but changed to bigger ones (similar to 8 mu m) and abnormal growth (30-40 mu m) at 490 -510 degrees C. Precipitated phases consist of rod-like (Mg, Zn)(3)Gd particles and newly precipitated Mg2Zn11 rectangles. The alloy extruded at 490 degrees C meets all mechanical and anticorrosive requirements for biomaterials, thanks to evenly distributed second phases via the solid solution, and the grain refinements through the hot extrusion. (c) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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