采用搅拌铸造法制备了Al2O3颗粒增强Al-2%Mn合金基复合材料,对复合材料的显微组织、硬度和摩擦磨损性能进行了研究。结果表明：复合材料组织由Al基体、δ-Al2O3和MnAl6相组成,且Al2O3颗粒在铝基体中弥散分布。与原始铝基体相比,复合材料的布氏硬度提高了约70%。无论是干摩擦还是SO4.Cl-Na.Ca.Mg型弱碱性水溶液润滑摩擦情况下,复合材料的磨损量均显著低于铝基体。与铝锰合金相比,复合材料具有较低的冲刷腐蚀失重速率。复合材料具有优良的耐磨和耐蚀性。
Al2O3 particulates reinforced Al-2%Mn alloy matrix composites was fabricated by stirring casting,and microstructure,hardness and friction and wear behavior of the composites were studied.The results show that the as-cast microstructure of the composites is mainly composed of Al,δ-Al2O3 and MnAl6 phase,and the Al2O3 particles are distributed uniformly in Al matrix.Compared with the base metal,hardness of the composites is increased by 70%,and wear loss of the composites are far lower whether under the dry sliding or under the SO4·Cl-Na·Ca·Mg aqeous solution lubricated condition.The erosion-corrosion wear rates of the composites are lower than those of Al-2%Mn alloy irrespective of the rotation speed and the size of grinding particles.The Al2O3 particulates reinforced Al-2%Mn alloy matrix composites exhibit excellent wear-resistance and corrosion-resistance.
参考文献
| [1] | 付高峰,姜澜,刘吉,孙宇飞,张景新.反应自生氧化铝颗粒增强铝基复合材料[J].中国有色金属学报,2006(05):853-857. |
| [2] | G.MEIJER;Z.XIA;F.ELLYIN .BIAXIAL CYCLIC ANALYSIS OF Al_2O_3p-6061 Al COMPOSITE[J].Acta materialia,1997(8):3237-3249. |
| [3] | Xia Z;Ellyin F;Meijer G .Mechanical behavior of A12 O3-particle reinforced 6061 aluminum alloy under uniaxial and multiaxial cyclic loading[J].Composites Science and Technology,1997,57(02):237-248. |
| [4] | 黄赞军,胡敦芫,杨滨,张济山.原位Al2O3颗粒强化铝基复合材料的研究[J].金属学报,2002(06):568-574. |
| [5] | 何建军,陈振华,严红革,高文理.固液混合铸造Al-Mn合金坯料的重熔处理[J].金属热处理,2005(09):37-41. |
| [6] | 路贵民;王兆文;李冰.铝合金腐蚀与表面处理[M].沈阳:东北大学出版社,2000:12-13. |
| [7] | 樊自立,王喜鹏.新疆平原湖泊（包括人工湖）水质盐化及其防治途径[J].自然资源学报,1990(04):304. |
| [8] | 王辉虎,许伯藩,吴新杰,张细菊.多种氧化物原位反应制备的Al2O3/Al复合材料[J].中国有色金属学报,2003(03):662-666. |
| [9] | Das S;Das K .Abrasive wear of zircons,sand and alumina reinforced AI-4.5 wt% Cu alloy matrix eomposites-A comparative study[J].Comp Sei Technol,2007,67:746-751. |
| [10] | 李月英,刘勇兵,曹占义,杨杰.Al2O3·SiO2颗粒增强铝基复合材料的摩擦磨损特性[J].材料科学与工艺,2003(02):140-143. |
| [11] | Wilson S;Alpas A T .Wear mechanism map for metal matrix composites[J].Wear,1997,212:41-49. |
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