石墨烯增强AZ91镁基复合材料的力学性能
Mechanical Properties of Graphene Reinforced AZ91 Mg Alloy Based Composite
摘 要
分别以质量分数为0.1%的氧化石墨烯和石墨烯纳米片为增强相制备了AZ91镁基复合粉和复合材料, 分析了氧化石墨烯与AZ91镁合金的界面反应机理; 测试了复合材料的力学性能并观察了拉伸断口形貌。结果表明: 以氧化石墨烯为增强相复合材料的屈服强度、伸长率和显微硬度分别为224.85 MPa, 8.15%和70.14 HV, 与基体镁合金的相比分别提高了39.7%, 35.4%和31.8%, 高于以石墨烯纳米片为增强相复合材料的; 氧化石墨烯因带有含氧官能团极易与镁合金粉混合均匀, 且两者反应生成的MgO有利于提高石墨烯与镁合金基体的界面结合强度, 从而提高复合材料的力学性能。
氧化石墨烯
复合材料
力学性能
AZ91 Mg alloy
graphene oxide
composite
mechanical property
Abstract
The AZ91 Mg alloy based composite powder and materials were prepared with graphene oxide and graphene nanosheet as strengthening phase respectively and the interface reaction mechanism of graphene oxide with AZ91 Mg alloy was analyzed. The mechanical properties of the composites were tested and the tensile fracture surfaces were observed. The results show that the yield strength, elongation and microhardness of the composite with graphene oxide as strengthening phase reached 224.85 MPa, 8.15% and 70.14 HV, which were improved by 39.7%, 35.4% and 31.8% respectively comparing to those of AZ91 Mg alloy and also much higher than those of the composite with graphene nanosheet as strengthening phase. The graphene oxide was easy to disperse uniformly with the AZ91 Mg alloy powder due to its oxygen groups; the interface bonding between graphene and Mg alloy matrix can be strengthened by MgO produced by the reaction between the Mg alloy and the oxygen groups, resulting in the improvement of mechanical properties of the composite.
中图分类号 TG146.2 TB333 DOI 10.11973/jxgccl201608011
所属栏目
基金项目 江西省教育厅科技项目(GJJ151309)
收稿日期 2015/7/15
修改稿日期 2016/6/28
网络出版日期
作者单位点击查看
备注袁秋红(1981-), 男, 江西吉安人, 博士研究生。
引用该论文: YUAN Qiu-hong,ZENG Xiao-shu,WU Jun-bin. Mechanical Properties of Graphene Reinforced AZ91 Mg Alloy Based Composite[J]. Materials for mechancial engineering, 2016, 40(8): 43～48
袁秋红,曾效舒,吴俊斌. 石墨烯增强AZ91镁基复合材料的力学性能[J]. 机械工程材料, 2016, 40(8): 43～48
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【2】BOLOTIN K I, SIKES K J, JIANG Z, et al. Ultrahigh electron mobility in suspended graphene［J］. Solid State Communications, 2008, 146(9): 351-355.
【3】BALANDIN A A, GHOSH S, BAO W, et al. Superior thermal conductivity of single-layer graphene［J］. Nano Letters, 2008, 8(3): 902-907.
【4】NOVOSELOV K S, GEIM A K, MOROZOV S V, et al. Electric field effect in atomically thin carbon films［J］. Science, 2004, 306(5696): 666-669.
【5】WANG J, LI Z, FAN G, et al. Reinforcement with graphene nanosheets in aluminum matrix composites［J］. Scripta Materialia, 2012, 66(8): 594-597.
【6】JIANG L, LI Z, FAN G, et al. The use of flake powder metallurgy to produce carbon nanotube (CNT)/aluminum composites with a homogenous CNT distribution［J］. Carbon, 2012, 50(5): 1993-1998.
【7】燕绍九, 杨程, 洪起虎, 等. 石墨烯增强铝基纳米复合材料的研究［J］. 材料工程, 2014(4): 1-6.
【8】RASHAD M, PAN F, TANG A, et al. Effect of graphene nanoplatelets addition on mechanical properties of pure aluminum using a semi-powder method［J］. Progress in Natural Science: Materials International, 2014, 24(2): 101-108.
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【14】韩朋, 井晓静, 沈湘黔, 等. 氧化石墨烯、短切碳纤维改性聚偏氟乙烯复合膜的摩擦磨损及介电性能［J］. 机械工程材料, 2013, 37(2): 53-56.
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【21】任小孟, 王源升, 何特. 石墨烯热还原程度对其电化学性能的影响［J］. 电子元件与材料, 2013, 32(1): 5-9.
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【23】XIE S, LI X, SUN Y Y, et al. Theoretical characterization of reduction dynamics for graphene oxide by alkaline-earth metals［J］. Carbon, 2013, 52: 122-127.
【24】李陇岗, 杨建元, 钟辉, 等. Mg(OH)2热分解动力学机理研究［J］. 盐湖研究, 2006, 14(1): 39-44.
【25】GENNARI F C, URRETAVIZACYA G. Mechanical alloying of Mg-Ge based mixturas under hydrogen and argon atmospheres［J］. Latin American applied research, 2002, 32(4): 275-280.
【26】GANESH V V, CHAWLA N. Effect of particle orientation anisotropy on the tensile behavior of metal matrix composites: experiments and microstructure-based simulation［J］. Materials Science and Engineering A, 2005, 391(1/2): 342-353.
【27】ZHANG Z, CHEN D L. Consideration of Orowan strengthening effect in particulate-reinforced metal matrix nanocomposites: a model for predicting their yield strength［J］. Scripta Materialia, 2006, 54(7): 1321-1326.
【28】BAKSHI S R, AGARWAL A. An analysis of the factors affecting strengthening in carbon nanotube reinforced aluminum composites［J］. Carbon, 2011, 49(2): 533-544.
【29】徐强, 曾效舒, 徐耀勇, 等. 包覆镍CNTs/AM60复合材料铸态显微组织与力学性能［J］. 机械工程材料,2009, 33(10): 53-56.
【30】KONDOH K, FUKUDA H, UMEDA J, et al. Microstructural and mechanical analysis of carbon nanotube reinforced magnesium alloy powder composites［J］. Materials Science and Engineering A,2010, 527(16/17): 4103-4108.
【31】王雪静, 陈得军, 周建国. 碳纳米管/氧化镁纳米复合材料的制备和表征［J］. 化工新型材料,2009, 37(2): 35-36.
【32】GOH C S, GUPTA M, WEI J, et al. Characterization of high performance Mg/MgO nanocomposites［J］. Journal of Composite Materials, 2007, 41(19): 2325-2335.
【33】FAN Z, WANG Y, XIA M, et al. Enhanced heterogeneous nucleation in AZ91D alloy by intensive melt shearing［J］. Acta Materialia, 2009, 57(16): 4891-4901.
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