| Microstructure and mechanical properties of the micrograined hypoeutectic Zn–Mg alloy |
| |
| 引用本文： | J. Kubásek,D. Vojtěch,I. Pospí?ilová,A. Michalcová,J. Maixner.Microstructure and mechanical properties of the micrograined hypoeutectic Zn–Mg alloy[J].矿物冶金与材料学报,2016,23(10):1167-1176. |
| |
| 作者姓名： | J. Kubásek D. Vojtěch I. Pospí?ilová A. Michalcová J. Maixner |
| |
| 作者单位： | Department of Metals and Corrosion Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28, Prague 6, Czech Republic |
| |
| 基金项目： | This work was financially supported by the Czech Science Foundation |
| |
| 摘 要： | A biodegradable Zn alloy, Zn–1.6Mg, with the potential medical applications as a promising coating material for steel components was studied in this work. The alloy was prepared by three different procedures: gravity casting, hot extrusion, and a combination of rapid solidification and hot extrusion. The samples prepared were characterized by light microscopy, scanning electron microscopy, transmission electron microscopy, and X-ray diffraction analysis. Vickers hardness, tensile, and compressive tests were performed to determine the samples’ mechanical properties. Structural examination reveals that the average grain sizes of samples prepared by gravity casting, hot extrusion, and rapid solidification followed by hot extrusion are 35.0, 9.7, and 2.1 μm, respectively. The micrograined sample with the finest grain size exhibits the highest hardness (Hv = 122 MPa), compressive yield strength (382 MPa), tensile yield strength (332 MPa), ultimate tensile strength (370 MPa), and elongation (9%). This sample also demonstrates the lowest work hardening in tension and temporary softening in compression among the prepared samples. The mechanical behavior of the samples is discussed in relation to the structural characteristics, Hall–Petch relationship, and deformation mechanisms in fine-grained hexagonal-close-packed metals.
|
| 关 键 词： | zinc magnesium alloys extrusion rapid solidification microstructure mechanical properties |
| 本文献已被 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《矿物冶金与材料学报》浏览原始摘要信息 |
|
点击此处可从《矿物冶金与材料学报》下载全文 |
|
