沈崇,章晓波,薛亚军,王章忠

• 1:南京工程学院材料工程学院
• 2:创生医疗器械(中国)有限公司
• 3:江苏省先进结构材料与应用技术重点实验室

摘要(Abstract)：

为研究长周期堆垛有序(LPSO)结构对镁合金腐蚀行为的影响,通过重力铸造制备了Mg-6.6Y-2.6Cu-1.2Zr(质量分数%)合金,并分别在420、440和460℃下固溶处理。借助SEM和XRD对合金显微组织和物相进行分析;通过腐蚀浸泡实验研究合金的耐蚀性能。结果表明,铸态Mg-6.6Y-2.6Cu-1.2Zr含有LPSO结构,随着固溶温度的升高,LPSO结构减少,晶粒尺寸增大,当固溶温度为460℃时,LPSO结构消失。不含LPSO结构的Mg-Y-Cu-Zr合金耐蚀性能优于含LPSO结构的该合金,而随着固溶温度的升高,含有LPSO结构的Mg-Y-Cu-Zr合金的耐蚀性能降低。此外,合金表现为严重的局部腐蚀行为。

关键词(KeyWords)： Mg-Y-Cu-Zr合金;长周期堆垛有序结构(LPSO);显微组织;腐蚀行为

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51301089);; 江苏省自然科学基金项目(BK20130745);; 江苏省“青蓝工程”资助项目

作者(Author): 沈崇,章晓波,薛亚军,王章忠

DOI: 10.13289/j.issn.1009-6264.2015.09.024

参考文献(References)：

• [1]Zheng Y,Gu X,Witte F.Biodegradable metals[J].Materials Science and Engineering R,2014,77:1-34.
• [2]袁广银,章晓波,牛佳林,等.新型可降解生物医用镁合金JDBM的研究进展[J].中国有色金属学报,2011,21(10):2476-2488.YUAN Guang-yin,ZHANG Xiao-bo,NIU Jia-lin,et al.Research progress of new type of degradable biomedical magnesium alloys JDBM[J].The Chinese Journal of Nonferrous Metals,2011,21(10):2476-2488.
• [3]马晓刚,刘德宝,刘林波,等.生物可降解Mg-3Zn-0.8Zr-x Mn合金的组织与性能[J].材料热处理学报,2015,36(2):27-31.MA Xiao-gang,LIU De-bao,LIU Lin-bo,et al.Microstructure and properties of Mg-3Zn-0.8Zr-x Mn alloy[J].Transactions of Materials and Heat Treatment,2015,36(2):27-31.
• [4]甄睿,孙扬善,白晶,等.Mg-(11-13)Gd-1Zn变形镁合金的组织和力学性能[J].金属学报,2012,48(6):733-738.ZHEN Rui,SUN Yang-shan,BAI Jing,et al.Microstructures and mechanical properties of Mg-(11-13)Gd-1Zn alloys[J].Acta Metallurgica Sinica,2012,48(6):733-738.
• [5]Wu Y,Peng L,Lin D,et al.A high-strength extruded Mg-Gd-Zn-Zr alloy with superplasticity[J].Journal of Materials Research,2009,24(12):3596-3602.
• [6]陈彬,林栋梁,曾小勤,等.挤压和等通道角挤压制备高强度Mg97Y2Zn1镁合金[J].中国有色金属学报,2010,20(4):613-619.CHEN Bin,LIN Dong-liang,ZENG Xiao-qin,et al.High strength alloy processed by extrusion and equal channel angular processing[J].The Chinese Journal of Nonferrous Metals,2010,20(4):613-619.
• [7]Liu H,Xue F,Bai J,et al.Microstructure and mechanical properties of a Mg94Y4Ni2alloy with long period stacking ordered structure[J].Journal of Materials Engineering and Performance,2013,22(11):3500-3506.
• [8]Kawamura Y,Kasahara T,Izumi S,et al.Elevated temperature Mg9 7Y2Cu1alloy with long period ordered structure[J].Scripta Materialia,2006,55(5):453-456.
• [9]Zhang J,Xu J,Chen W,et al.Corrosion behavior of Mg-Zn-Y alloy with long-period stacking ordered structures[J].Journal of Materials Science and Technology,2012,28(12):1157-1162.
• [10]Izumi S,Yamasaki M,Kawamura Y.Relation between corrosion behavior and microstructure of Mg-Zn-Y alloys prepared by rapid solidification at various cooling rates[J].Corrosion Science,2009,51(2):395-402.
• [11]Yamasaki M,Izumi S,Kawamura Y,et al.Corrosion and passivation behavior of Mg-Zn-Y-Al alloys prepared by cooling rate-controlled solidification[J].Applied Surface Science,2011,257(19):8258-8267.
• [12]Zhang X,Wang Q,Chen F,et al.Relation between LPSO structure and biocorrosion behavior of biodegradable GZ51K alloy[J].Materials Letters,2015,138:212-215.
• [13]Zhang X,Ba Z,Wang Q,et al.Uniform corrosion behavior of GZ51K alloy with long period stacking ordered structure for biomedical application[J].Corrosion Science,2014,88:1-5.
• [14]Zhang X,Wu Y,Xue Y,et al.Biocorrosion behavior and cytotoxicity of a Mg-Gd-Zn-Zr alloy with long period stacking ordered structure[J].Materials Letters,2012,86:42-45.
• [15]章晓波,薛亚军,王章忠,等.热处理对NZ30K生物镁合金力学和腐蚀性能的影响[J].材料热处理学报,2013,34(8):20-25.ZHANG Xiao-bo,XUE Ya-jun,WANG Zhang-zhong,et al.Effect of heat treatment on mechanical and corrosion properties of NZ30K bio-magnesium alloy[J].Transactions of Materials and Heat Treatment,2013,34(8):20-25.
• [16]Wu Y,Lin D,Zeng X,et al.Formation o f a lamellar 14H-type long period stacking ordered structure in an as-cast Mg-Gd-Zn-Zr alloy[J].Journal of Materials Science,2009,44(6):1607-1612.
• [17]Staiger M P,Pietak A M,Huadmai J,et al.Magnesium and its alloys as orthopedic biomaterials:A review[J].Biomaterials,2006,27(9):1728-1734.
• [18]任伊宾,黄晶晶,杨柯,等.纯镁的生物腐蚀研究[J].金属学报,2005,41(11):1228-1232.REN Yi-bin,HUANG Jing-jing,YANG Ke,et al.Study of bio-corrosion of pure magnesium[J].Acta Metallurgica Sinica,2005,41(11):1228-1232.
• [19]Liu M,Song G.Impurity control and corrosion resistance of magnesium-aluminum alloy[J].Corrosion Science,2013,77:143-150.
• [20]Song G L.Control of biodegradation of biocompatable magnesium alloys[J].Corrosion Science,2007,49(4):1696-1701.
• [21]Chen Y,Xu Z,Smith C,et al.Recent advances on the development of magnesium alloys for biodegradable implants[J].Acta Biomaterialia,2014,10(11):4561-4573.
• [22]Song G,Atrens A.Corrosion mechanisms of magnesium alloys[J].Advanced Engineering Materials,1999,1(1):11-33.

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