[1]李伟庆、朱世杰、孙玉峰、关绍康.医用Mg-Zn-Y-Nd合金微细管材的制备及组织性能研究[J].郑州大学学报(工学版),2021,42(02):94-98.[doi:10.13705/j.issn.1671-6833.2021.02.005]
　Li Weiqing,Zhu Shijie,Sun Yufeng,et al.Preparation, Microstructure and Properties of Medical Mg-Zn-Y-Nd Alloy Micro-tubes[J].Journal of Zhengzhou University (Engineering Science),2021,42(02):94-98.[doi:10.13705/j.issn.1671-6833.2021.02.005]
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医用Mg-Zn-Y-Nd合金微细管材的制备及组织性能研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
42
期数:
2021年02期
页码:
94-98
栏目:
出版日期:
2021-04-12

文章信息/Info

Title:
Preparation, Microstructure and Properties of Medical Mg-Zn-Y-Nd Alloy Micro-tubes
作者:
李伟庆、朱世杰、孙玉峰、关绍康
郑州大学材料科学与工程学院;
Author(s):
Li Weiqing; Zhu Shijie; Sun Yufeng; Guan Shaokang;
School of Materials Science and Engineering, Zhengzhou University;
关键词:
Keywords:
Mg-Zn-Y-Nd alloy;  micro-tube;  hot extrusion;  microstructure;  surface roughness
DOI:
10.13705/j.issn.1671-6833.2021.02.005
文献标志码:
A
摘要:
在本研究中，通过二次热挤压、冷拉拔以及退火的方法成功制备出外径Φ2.46 mm，壁厚0.14 mm的Mg-Zn-Y-Nd合金微细管材。微细管材的外径误差、内径误差以及壁厚误差分别为0.51 %、0.32 %、3.35 %。冷拉拔微细管材的屈服强度为342.2±10 MPa，抗拉强度为350.4±10 MPa，延伸率为0.4±0.2 %。经退火处理后，由于微细管材发生静态再结晶，造成晶粒细化、织构弱化以及第二相颗粒的弥散分布，其综合力学性能得到显著改善。退火态微细管材的屈服强度、抗拉强度以及延伸率分别为245.6±10 MPa 、305.6±10 MPa 、18.2±1.0 %。而且，退火态微细管材的断口表现出典型的韧性断裂特征。
Abstract:
In this study, Mg-Zn-Y-Nd alloy micro-tubes with an outer diameter of Φ2.46 mm and a wall thickness of 0.14 mm were successfully prepared by secondary hot extrusion, cold drawing and annealing. The outer diameter error, inner diameter error and wall thickness error of the micro-tubes were 0.51 %, 0.32 % and 3. 35 %, respectively. The yield strength, tensile strength and elongation of the drawn micro-tubes were 342.2±10 MPa, 350.4±10 MPa and 0.4±0.2 %. After annealing, the micro-tubes undergo static recrystallization, which resulted in grain refinement, texture weaken and dispersion of the second phase particles. The mechanical properties of the annealed micro-tubes were significantly improved. The yield strength, tensile strength and elongation of the annealed micro-tubes were 245.6±10 MPa, 305.6±10 MPa and 18.2±1.0 %, respectively. Moreover, the fractures of the annealed micro-tubes exhibited typical ductile fracture characteristics.

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更新日期/Last Update: 2021-05-30