| Optimization of microstructure and mechanical property of a Mg-Zn-Y-Nd alloy by extrusion process | |
| Du, B. N.1; Xiao, Z. P.1,2; Qiao, Y. X.2; Zheng, L.3; Yu, B. Y.3; Xu, D. K.4; Sheng, L. Y.1 | |
| Corresponding Author | Sheng, L. Y.(lysheng@yeah.net) |
| 2019-02-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 775Pages:990-1001 |
| Abstract | A new type of biomedical Mg-Zn-Y-Nd alloy was fabricated and hot extruded in different passes to investigate the influence of extrusion process on its microstructure and mechanical property. The results show that the as-cast alloy (alloy C) is composed of coarse equiaxed grains and large intergranular secondary phases. After one-pass hot extrusion, the incomplete dynamic recrystallization has led to a mixed grain structure with fine equiaxed grains and coarse elongated grains in the alloy (E1). Besides, the secondary phases break into small particles and distribute linearly along the extrusion direction (ED). After two-pass hot extrusion, dynamic recrystallization continues and both equiaxed grains and elongated grains are further refined (alloy E2). The volume fraction of equiaxed grains increases to 82.4%. Moreover, the secondary phases change into smaller ones. The tensile property of Mg-Zn-Y-Nd alloy is improved dramatically by extrusion. The one-pass extrusion enhances the strength of the alloy obviously but contributes little to the elongation. While the two-pass extrusion not only enhances the strength but also improves the ductility of the alloy remarkably. The mechanical properties improvement of the Mg-Zn-Y-Nd alloy should be attributed to the combining effects of grain refinement, texture strengthening and precipitation strengthening generated by hot extrusion process. (C) 2018 Elsevier B.V. All rights reserved. |
| Keyword | Mg-Zn-Y-Nd alloy Microstructure Tensile property Dynamic recrystallization Deformation mechanism |
| Funding Organization | Shenzhen Technology Innovation Project ; Shenzhen Basic Research Project |
| DOI | 10.1016/j.jallcom.2018.10.167 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Shenzhen Technology Innovation Project[JSGG20170412145203293] ; Shenzhen Basic Research Project[JCYJ201JCYJ2015052916222873] ; Shenzhen Basic Research Project[JCYJ20160427100211076] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000450981100115 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/130596 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Sheng, L. Y. |
| Affiliation | 1.Peking Univ, Shenzhen Inst, Shenzhen 518057, Peoples R China 2.Jiangsu Univ Sci & Technol, Zhenjiang 212003, Peoples R China 3.Shenyang Univ Technol, Shenyang 110023, Liaoning, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Du, B. N.,Xiao, Z. P.,Qiao, Y. X.,et al. Optimization of microstructure and mechanical property of a Mg-Zn-Y-Nd alloy by extrusion process[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,775:990-1001. |
| APA | Du, B. N..,Xiao, Z. P..,Qiao, Y. X..,Zheng, L..,Yu, B. Y..,...&Sheng, L. Y..(2019).Optimization of microstructure and mechanical property of a Mg-Zn-Y-Nd alloy by extrusion process.JOURNAL OF ALLOYS AND COMPOUNDS,775,990-1001. |
| MLA | Du, B. N.,et al."Optimization of microstructure and mechanical property of a Mg-Zn-Y-Nd alloy by extrusion process".JOURNAL OF ALLOYS AND COMPOUNDS 775(2019):990-1001. |
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