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

文献类型：期刊论文

作者Gao, Ming1,2; Etim, Iniobong P.1,2; Yang, Ke1; Tan, Lili1; Ma, Zheng1
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2022
卷号829页码:11
ISSN号0921-5093
关键词Magnesium ECAP FSP Corrosion resistance Mechanical property
DOI10.1016/j.msea.2021.142058
通讯作者Tan, Lili(lltan@imr.ac.cn) ; Ma, Zheng(zma@imr.ac.cn)
英文摘要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.
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000710143200001
源URL[http://ir.imr.ac.cn/handle/321006/166642]  
专题金属研究所_中国科学院金属研究所
通讯作者Tan, Lili; Ma, Zheng
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 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.

入库方式： OAI收割

来源：金属研究所

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