(Al2O3+Al3Zr)p/Al-22Si铝基复合材料的制备及摩擦学性能
Fabrication and Tribological Properties of in situ (Al2O3+Al3Zr)p/Al-22Si Composites
摘 要
在Al-22Si-Zr(CO3)2体系中,用熔体原位反应法制备了内生Al2O3和Al3Zr颗粒增强铝基复合材料,用XRD、EPMA、SEM等方法对复合材料进行物相和显微组织分析;用磨损试验机测试了复合材料的室温干滑动摩擦磨损性能,并对其磨损机制进行了分析.结果表明:复合材料的磨损性能比基体合金有显著提高,随着内生Al2O3和Al3Zr颗粒体积分数的增加,复合材料的耐磨性能逐渐提高;随载荷增加,复合材料的摩擦因数呈降低趋势,且颗粒体积分数越大,摩擦因数越低;随颗粒体积分数的增大,复合材料的磨损机制由粘着磨损+磨粒磨损向磨粒磨损转变.
铝基复合材料
摩擦磨损性能
hypereutectic Al-Si alloy
Al based composite
frictionand wear property
Abstract
Al-22Si matrix composites reinforced by Al2O3 and Al3Zr particles were fabricated from Al-22Si-Zr(CO3)2 system via melt in situ reaction technology.The phase compositions were investgated by XRD and EPMA,the tribological properties of the as-prepared composites at room temperature were investigated by dry sliding wear test,and the microstructure of the wear tracks and wear debris were observed by SEM.The wear mechanisms were discussed.The results indicated that wear resistance of the composites was much higher than that of Al-22Si alloy.With the increase of the particles volume fraction,the wear resistance of the composites increased,and the friction coefficient of the composites trended to decrease.The wear mechanism of the composites changed from adhesion and abrasive wear to abrasive wear with the increase of the particles volume fraction.
中图分类号 TB333
所属栏目 新材料 新工艺
基金项目 教育部重点基金资助项目(00170);江苏省铝基复合材料工程研究中心开发项目(BM2003014);江苏省材料摩擦学重点实验室开放基金资助项目(Kjsmcx06003)
收稿日期 2007/12/10
修改稿日期 2008/4/25
网络出版日期
作者单位点击查看
备注陈登斌(1984-),男,浙江东阳人,硕士研究生.
引用该论文: CHEN Deng-bin,HUO Xiao-yang,ZHANG Song-li,ZHAO Yu-tao. Fabrication and Tribological Properties of in situ (Al2O3+Al3Zr)p/Al-22Si Composites[J]. Materials for mechancial engineering, 2008, 32(12): 47～50
陈登斌,霍晓阳,张松利,赵玉涛. (Al2O3+Al3Zr)p/Al-22Si铝基复合材料的制备及摩擦学性能[J]. 机械工程材料, 2008, 32(12): 47～50
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【2】Roy D,Ghosh S,Basumallick A,et al.Preparation of Ti-aluminide reinforced in situ aluminium matrix composites by reactive hot pressing[J].Journal of Alloys and Compounds,2007(1/2):107-111.
【3】YANG Bin,WANG Yu-qing,ZHOU Ben-lian.Analysis of the formation mechanism of TiB2 particulate fabricated by In suit reaction in molten aluminum[J].Acta Metallurgica Sinica,1998,34(1):100-104.
【4】湛永钟,张国定,蔡宏伟.颗粒增强金属基复合材料的干摩擦性能与磨损机理[J].材料科学与工程学报,2003,21(5):748-752.
【5】Alpas A T,Zhang J.Effect of microstructure (particulate size and volume fraction) and counterface material on the sliding wear resistance of particulate-reinforced aluminum matrix composites[J].Metall Trans A,1994,25:969-983.
【6】Skolianos S,Kattamis T Z.Tribological properties of SiCp reinforced Al-4.5%Cu-1.5% Mg alloy composites[J].Mater Sci Eng A,1993,163:107-113.
【7】李俊宪,孙保良,邵光杰.SiC颗粒增强铝基复合材料的摩擦磨损性能[J].机械工程材料,2006,30(5):62-65.
【8】Suh N P,Sin H-C.The genesis of friction[J].Wear,1981,69:91-114.
【9】Dheerendra Kumar Dwivedi.Wear behaviour of cast hypereutectic aluminum silicon alloys[J].Marerials and Design,2006,27(7):610-616.
【10】赵玉涛.Al-Zr-O体系熔体反应法合成复合材料的微观组织和拉伸性能[J].铸造,2002,51(3):153-156.
【11】LI Yuanyuan,LUO Junming.The microstructure and wear mechanism of a nove high-strength wear-resistant zinc alloy (ZMJ)[J].Journal of Materials Processing Technology,1995,55:154-161.
【12】孙继兵,李国彬,崔春翔,等.原位自生成陶瓷相增强铝基复合材料磨损特性的研究[J].机械工程材料,2003,27(5):32-35.
【13】杨忠,李建平,郭永春,等.SiCp增强高强耐热铝基复合材料的高温摩擦磨损行为[J].铸造,2006,55(10):1043-1046.
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