贺俊光,郑丽鸽,文九巴,徐大召

• 1:河南科技大学材料科学与工程学院
• 2:河南省有色金属共性技术协同创新中心

摘要(Abstract)：

采用扫描电镜(SEM)、X射线衍射(XRD)、浸泡测试、拉伸试验以及硬度测试研究Sr含量对铸态Mg-1Zn-0.3Zr-2Gd-xSr(x=0,0.1,0.3,0.5,0.7,1,mass%)合金微观组织、腐蚀性能及力学性能的影响。结果表明:添加Sr后,合金析出两种新相Mg17Sr2和SrZn5;当Sr含量从0增加到0.3%时,合金的平均晶粒尺寸从175μm减小到58.33μm,合金的平均腐蚀速率从2.039mm/a减至1.102mm/a,合金的抗拉强度从约为155.9MPa上升到约为173.5MPa,断后伸长率从约为8.15%上升至约为13.4%;Sr含量继续增加,合金的平均晶粒尺寸逐渐变大,耐蚀性及力学性能均下降。

关键词(KeyWords)： Sr;微观组织;耐蚀性;力学性能

Abstract:

Keywords:

基金项目(Foundation): 河南省自然科学基金项目(162300410213);; 河南省教育厅科技攻关项目(14A430001)

作者(Author): 贺俊光,郑丽鸽,文九巴,徐大召

DOI: 10.13289/j.issn.1009-6264.2018-0061

参考文献(References)：

• [1]高亚丽,马广超,张海波,等.AZ91HP镁合金激光熔凝层的耐蚀性和生物相容性[J].材料热处理学报,2015,36(1):147-152.GAO Ya-li,MA Guang-chao,ZHANG Hai-bo,et al.Corrosion resistance and biocompatibility of AZ91HP alloy melted layer treated by laser[J].Transactions of Materials and Heat Treatment,2015,36(1):147-152.
• [2]张帆,毕广利,李元东,等.固溶处理对Mg-Dy-Zn合金显微组织和腐蚀性能的影响[J].材料热处理学报,2015,36(4):85-92.ZHANG Fan,BI Guang-li,LI Yuan-dong,et al.Effect of solution treatment on microstructure and corrosion properties of Mg-Dy-Zn alloy[J].Transactions of Materials and Heat Treatment,2015,36(4):85-92.
• [3]Sunil B R,Kumar T S S,Chakkingal U,et al.In vitro and in vivo studies of biodegradable fme grained AZ31 magnesium alloy produced by equal channel angular pressing[J].Materials Science and Engineering C,2016,59:356-367.
• [4]Li M,Cheng Y Zheng Y F,et al.Surface characteristics and corrosion behaviour of WE43 magnesium alloy coated by Si C film[J].Applied Surface Science,2012,258(7):3074-3081.
• [5]Verstraeten S V Aimo L,Oteiza P I.Aluminium and lead:molecular mechanisms of brain toxicity[J].Archives of Toxicology,2008,82(11):789-802.
• [6]Pagano G,Aliberti F,Guida M,et al.Rare earth elements in human and animal health:State of art and research priorities[J].Environmental Research,2015,142:215-220.
• [7]Zhang X B,Wu Y J,Xue Y J,et al.Biocorrosion behavior and cytotoxicity of a Mg-Gd-Zn-Zr alloy with long period stacking ordered structure[J].Materials Letters,2012,86(1):42-45.
• [8]Bomapour M,Muja N,Shum-Tim D,et al.Biocompatibility and biodegradability of Mg-Sr alloys:the formation of Sr-substituted hydroxyapatite[J].Acta Biomaterialia,2013,9(2):5319-5330.
• [9]Han J,Wan P,Ge Y,et al.Tailoring the degradation and biological response of a magnesium-strontium alloy for potential bone substitute application[J].Materials Science and Engineering C,2016,58:799-811.
• [10]Brar H S,Wong J,Manuel M V.Investigation of the mechanical and degradation properties of Mg-Sr and Mg-Zn-Sr alloys for use as potential biodegradable implant materials[J].Journal of the Mechanical Behavior of Biomedical Materials,2012,7(3):87-95.
• [11]Zhang X B,He X C,Xue Y J,et al.Effects of Sr on microstructure and corrosion resistance in simulated body fluid of as cast MgNd-Zr[J].Corrosion Engineering Science and Technology,2014,49(5):346-350.
• [12]宋琳琳.Mg-Zn-Sr骨植入材料的制备及其降解性能与生物相容性研究[D].沈阳:东北大学,2014.SONG Lin-lin,Preparation of bone implant materials of Mg-Zn-Sr alloys and the study on degradation performance and biocompatibility[D].Shenyang:Northeast University,2014.
• [13]Vagge S T,Raja V S.Influence of strontium on electrochemical corrosion behavior of hot-dip galvanized coating[J].Surface and Coatings Technology,2009,203:3092-3098.
• [14]Luo Y,Bai X,Li L X.Effect of Sr addition on microstructure of as-cast Mg-Al-Ca alloy[J].Transactions of Nonferrous Metals Society of China,2011,21(6):1247-1252.
• [15]Zhang X B,Yuan G Y,Mao L,et al.Effects of extrusion and heat treatment on the mechanical properties and biocorrosion behaviors of a Mg-Nd-Zn-Zr alloy[J].Journal of Mechanical Behavior of Biomedical Materials,2012,3(7):77-86.
• [16]孟波波,李全安,陈晓亚,等.Sr对镁合金组织及其耐热性的影响[J].特种铸造及有色合金,2017,37(1):42-45.MENG Bo-bo,LI Quan-an,CHEN Xiao-ya,et al.Progress in Effects of Sr on microstructures and heat resistances of magnesium alloy[J].Special Casting and Nonferrous Metals,2017,37(1):42-45.
• [17]章晓波,王章忠,袁广银.二次挤压对Mg-Nd-Zn-Zr生物镁合金组织与性能的影响[J].材料热处理学报,2013,34(2):103-107.ZHANG Xiao-bo,WANG Zhang-zhong,YUAN Guang-yin.Effects of double extrusion on properties of Mg-Nd-Zn-Zr bio-magnesium alloy[J].Transactions of Materials and Heat Treatment,2013,34(2):103-107.

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