Enhancing mechanical property and corrosion resistance of Mg-Zn-Nd alloy wire by a combination of SPD techniques, extrusion and hot drawing

doi:10.1016/j.msea.2021.142058

IMR OpenIR

	Enhancing mechanical property and corrosion resistance of Mg-Zn-Nd alloy wire by a combination of SPD techniques, extrusion and hot drawing
	Gao, Ming 1,2; Etim, Iniobong P.1,2; Yang, Ke 2; Tan, Lili 2; Ma, Zheng 2
通讯作者	Tan, Lili(lltan@imr.ac.cn) ; Ma, Zheng(zma@imr.ac.cn)
	2022
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	829 页码:11
摘要	Poor formability and corrosion resistance are the limitations that restrict the widespread applications of biodegradable magnesium alloys as surgical staples. In this study fine-grained Mg-2Zn-0.5Nd (ZN20) alloy wire with a diameter of 0.23 mm was fabricated by a combination of equal-channel angular pressing (ECAP), friction stir processing (FSP), extrusion and hot drawing. ECAP could be beneficial to the subsequent deformation by texture weakening, and FSP could improve the corrosion resistance by decreasing the number of second phases. A typical microstructure with similar diameter of matrix grains and second phase particles was observed in ZN20 alloy wire after combined processing of ECAP, extrusion and hot drawing. The strength of ZN20 alloy wire after combined processing of FSP, extrusion and hot drawing was increased from 292 MPa to 392 MPa due to the grain boundary strengthening, precipitates strengthening and texture strengthening. It was beneficial to the ductility by promoting shear band nucleation and inhibiting its prolongation when the diameter of matrix grains and second phase particles was similar, and the ductility was increased by 3.5 times. The immersion test showed that the corrosion rate could be decreased by nearly 31% after combined processing of FSP, extrusion and hot drawing. Grain refinement could improve the corrosion resistance by stabilizing the corrosion product layer, and the smaller amount of second phase also had a positive influence on the corrosion resistance by avoiding the galvanic corrosion.
关键词	Magnesium ECAP FSP Corrosion resistance Mechanical property
DOI	10.1016/j.msea.2021.142058
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000710143200001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：13[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/321006/166643
专题	中国科学院金属研究所
通讯作者	Tan, Lili; Ma, Zheng
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Gao, Ming,Etim, Iniobong P.,Yang, Ke,et al. Enhancing mechanical property and corrosion resistance of Mg-Zn-Nd alloy wire by a combination of SPD techniques, extrusion and hot drawing[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,829:11.
APA	Gao, Ming,Etim, Iniobong P.,Yang, Ke,Tan, Lili,&Ma, Zheng.(2022).Enhancing mechanical property and corrosion resistance of Mg-Zn-Nd alloy wire by a combination of SPD techniques, extrusion and hot drawing.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,829,11.
MLA	Gao, Ming,et al."Enhancing mechanical property and corrosion resistance of Mg-Zn-Nd alloy wire by a combination of SPD techniques, extrusion and hot drawing".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 829(2022):11.