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

被引：25
作者：
Yao, Huai [1 ,2 ]
Wen, Jiuba [1 ,2 ]
Xiong, Yi [1 ,2 ]
Lu, Yan [1 ]
Ren, Fengzhang [1 ,2 ]
Cao, Wei [3 ,4 ]
机构：
[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
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 739卷
关键词：
Magnesium alloys; Microstructure; Mechanical properties; Corrosion; Extrusion; ZN-ZR ALLOY; IN-VITRO CORROSION; MECHANICAL-PROPERTIES; MG ALLOY; BIOCORROSION BEHAVIOR; RINGERS SOLUTION; MAGNESIUM ALLOY; HEAT-TREATMENT; HIGH-STRENGTH; MICROSTRUCTURE;
D O I：
10.1016/j.jallcom.2017.12.225
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
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.
引用
收藏
页码：468 / 480
页数：13
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