Optimization of microstructure and mechanical property of a Mg-Zn-Y-Nd alloy by extrusion process

doi:10.1016/j.jallcom.2018.10.167

IMR OpenIR

	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
通讯作者	Sheng, L. Y.(lysheng@yeah.net)
	2019-02-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	775 页码:990-1001
摘要	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.
关键词	Mg-Zn-Y-Nd alloy Microstructure Tensile property Dynamic recrystallization Deformation mechanism
资助者	Shenzhen Technology Innovation Project ; Shenzhen Basic Research Project
DOI	10.1016/j.jallcom.2018.10.167
收录类别	SCI
语种	英语
资助项目	Shenzhen Technology Innovation Project[JSGG20170412145203293] ; Shenzhen Basic Research Project[JCYJ201JCYJ2015052916222873] ; Shenzhen Basic Research Project[JCYJ20160427100211076]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000450981100115
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：50[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/130596
专题	中国科学院金属研究所
通讯作者	Sheng, L. Y.
作者单位	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
推荐引用方式 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.