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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 AuthorSheng, L. Y.(lysheng@yeah.net)
2019-02-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume775Pages:990-1001
AbstractA 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.
KeywordMg-Zn-Y-Nd alloy Microstructure Tensile property Dynamic recrystallization Deformation mechanism
Funding OrganizationShenzhen Technology Innovation Project ; Shenzhen Basic Research Project
DOI10.1016/j.jallcom.2018.10.167
Indexed BySCI
Language英语
Funding ProjectShenzhen Technology Innovation Project[JSGG20170412145203293] ; Shenzhen Basic Research Project[JCYJ201JCYJ2015052916222873] ; Shenzhen Basic Research Project[JCYJ20160427100211076]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000450981100115
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/130601
Collection中国科学院金属研究所
Corresponding AuthorSheng, L. Y.
Affiliation1.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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