黄浩,张帅杰,张磊

• 1:南昌航空大学航空制造工程学院

摘要(Abstract)：

在医用Mg-7Zn合金的凝固过程中施加超声处理,研究了超声功率对合金凝固组织、力学性能及生物腐蚀行为的影响。结果表明,超声处理能够显著细化合金的凝固组织。随着超声功率的增加,合金中的初生α-Mg相的晶粒尺寸逐渐减小,MgZn相由不连续网状和颗粒状共存逐渐向孤岛状和颗粒状共存转变,其体积分数也逐渐降低。随着超声功率的增加,合金的力学性能逐渐提升,当超声功率增大到900 W时,合金的抗拉强度和伸长率相比未处理合金分别提高了48.5%和43.5%。随着超声功率的增加,试样在Hank’s溶液中的析氢速率和腐蚀质量损失速率均逐渐降低,表明合金的耐腐蚀性能逐渐提高。

关键词(KeyWords)： 超声处理;Mg-7Zn合金;组织;力学性能;腐蚀行为

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51401102);; 江西省自然科学基金(20181BAB206005)

作者(Author): 黄浩,张帅杰,张磊

DOI: 10.13289/j.issn.1009-6264.2019-0545

参考文献(References)：

• [1] 王建利,裴娟,袁姣娜,等.Sn元素对生物医用镁合金Mg-4.5Zn-Sn显微组织和耐蚀性能的影响[J].材料热处理学报,2018,39(6):26-34.WANG Jian-li,PEI Juan,YUAN Jiao-na,et al.Effect of Sn element on microstructure and corrosion resistance of biomedical Mg-4.5Zn-Sn alloys[J].Transactions of Materials and Heat Treatment,2018,39(6):26-34.
• [2] Zhou Y L,Li Y,Luo D M,et al.Microstructures,mechanical properties and in vitro corrosion behaviour of biodegradable Mg-Zr-Ca alloys[J].Journal of Materials Science,2013,48(4):1632-1639.
• [3] Li Y,Wen C,Mushahary D,et al.Mg-Zr-Sr alloys as biodegradable implant materials[J].Acta Biomaterialia,2012,8(8):3177-3188.
• [4] Li Y,Liu L,Wan P,et al.Biodegradable Mg-Cu alloy implants with antibacterial activity for the treatment of osteomyelitis:In vitro and in vivo evaluations[J].Biomaterials,2016,106:250-263.
• [5] Yan Y,Cao H,Kang Y,et al.Effects of Zn concentration and heat treatment on the microstructure,mechanical properties and corrosion behavior of as-extruded Mg-Zn alloys produced by powder metallurgy[J].Journal of Alloys and Compounds,2016,693:1277-1289.
• [6] Zhang L,Hu P H,Zhou Q,et al.Effects of pulsed magnetic field on microstructure,mechanical properties and bio-corrosion behavior of Mg-7Zn alloy[J].Materials Letters,2017,193:224-227.
• [7] Nowosielski R,Cesarz-Andraczke K.Impact of Zn and Ca on dissolution rate,mechanical properties and GFA of resorbable Mg-Zn-Ca metallic glasses[J].Archives of Civil and Mechanical Engineering,2018,18(1):1-11.
• [8] 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.
• [9] 王朝辉,王旭东,王庆峰,等.超声处理对Mg-5Zn-2Er合金组织及力学性能的影响[J].中国有色金属学报,2011,21(4):773-777.WANG Zhao-hui,WANG Xu-dong,WANG Qing-feng,et al.Effects of ultrasonic treatment on microstructure and mechanical properties of Mg-5Zn-2Er[J].Transactions of Nonferrous Metals Society of China,2011,21(4):773-777.
• [10] 廖露亮,尧军平,张磊,等.超声处理对AS31镁合金组织及性能的影响[J].特种铸造及有色合金,2017,37(10):1150-1153.LIAO Lu-liang,YAO Jun-ping,ZHANG Lei,et al.Effects of ultrasonic treatment on solidification structure and mechanical properties of AS31 magnesium alloy[J].Special Casting and Nonferrous Alloys,2017,37(10):1150-1153.
• [11] 周维,邓鹏,胡鹏鹤,等.超声处理对Mg-Zn-Y合金组织和性能的影响[J].特种铸造及有色合金,2016,36(10):1196-1199.ZHOU Wei,DENG Peng,HU Peng-he,et al.Effects of ultrasonic treatment on microstructure and mechanical properties of Mg-Zn-Y alloy reinforced by quasicrystais[J].Special Casting and Nonferrous Alloys,2016,36(10):1196-1199.
• [12] 王武孝,刘雪雍,王娜,等.超声处理对Mg-9Al-Zn-0.6Ce-1.2Ca镁合金组织及耐蚀性的影响[J].材料热处理学报,2019,40(1):44-49.WANG Wu-xiao,LIU Xue-yong,WANG Na,et al.Effects of ultrasonic treatment on microstructure and corrosion resistance of Mg-9Al-Zn-0.6Ce-1.2Ca magnesium alloy[J].Transactions of Materials and Heat Treatment,2019,40(1):44-49.
• [13] Gu X,Shiflet G J,Guo F Q,et al.Mg-Ca-Zn bulk metallic glasses with high strength and significant ductility[J].Journal of Materials Research,2005,20(8):1935-1938.
• [14] Zhang E,Yang L,Xu J,et al.Microstructure,mechanical properties and bio-corrosion properties of Mg-Si (-Ca,Zn) alloy for biomedical application[J].Acta Biomaterialia 2010,6(5):1756-62.
• [15] Ben-Hamu G,Eliezer D,Shin K S.The role of Mg2Si on the corrosion behavior of wrought Mg-Zn-Mn alloy[J].Intermetallics,2008,16:860-867.

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