快速凝固结合粉末冶金法制备Al2O3颗粒增强AZ91镁基复合材料的组织与力学性能
Microstructure and Mechanical Properties of Al2O3p/AZ91 Mg-BasedComposites Prepared by RS/PM Process
摘 要
采用自制的双辊雾化急冷设备,用快速凝固结合粉末冶金方法制备了Al2O3颗粒增强AZ91镁基复合材料,研究了该复合材料的显微组织、相组成和力学性能.结果表明:Al2O3颗粒增强相在基体中分布均匀,复合材料的室温δ、σb、σ0.2分别为2.00%,325.00 MPa,293.64 MPa;复合材料表现出较好的高温力学性能,473 K时,其δ、σb、σ0.2分别为11.24%,209.75 MPa,195.53 MPa.
快速凝固
粉末冶金
颗粒增强
Mg-based composite
rapid solidification
powder metallurgy
particle reinforcement
Abstract
AZ91 Mg-based composites reinforced by Al2O3 particles were produced by self-made twin-roller atomization chilling unit using rapid solidification (RS) and powder metallurgy (PM) method.The microstructure,phase composition and mechanical properties of the composites were investigated.The results show that the particle reinforced phases distributed homogeneously in the substrate.The room temperature δ,σb,σ0.2 were 2.00%,32500 MPa,293.64 MPa,respectively.The composites exhibited excellent elevated temperature mechanical properties,that the δ,σb,σ0.2 at 473 K were 11.24%,209.75 MPa,195.53 MPa,respectively.
中图分类号 TF123.7 TG146.2
所属栏目 新材料 新工艺
基金项目 教育部博士点基金资助项目(20070532087);教育部新世纪优秀人才计划资助项目(NCET-06-0701)
收稿日期 2009/8/14
修改稿日期 2010/5/12
网络出版日期
作者单位点击查看
备注盛绍顶(1969-),男,安徽凤台人,讲师,博士.
引用该论文: SHENG Shao-ding,YAN Hong-ge,CHEN Zhen-hua. Microstructure and Mechanical Properties of Al2O3p/AZ91 Mg-BasedComposites Prepared by RS/PM Process[J]. Materials for mechancial engineering, 2010, 34(10): 40～42
盛绍顶,严红革,陈振华. 快速凝固结合粉末冶金法制备Al2O3颗粒增强AZ91镁基复合材料的组织与力学性能[J]. 机械工程材料, 2010, 34(10): 40～42
被引情况:
【1】龚柳百,韩兵强,李艳华,贺恒星,柯昌明,李楠, "促凝剂对刚玉-尖晶石浇注料性能的影响",机械工程材料 39, 98-102(2015)
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参考文献
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【2】POLMEAR I J.Magnesium alloys and applications[J].Mater Sci Technol,1994,10:1-2.
【3】HAN B Q,DUNAND D C.Microstructure and mechanical properties of magnesium containing high volume fractions of yttria dispersoids[J].Mater Sci Eng A,2000,277(1/2):297-304.
【4】WANG H Y,JIANG Q C,LI X L,et al.Effect of Al content on the self-propagating high-temperature synthesis reaction of Al-Ti-C system in molten magnesium[J].J Alloys Compd,2004,366:9-12.
【5】KIM J M,SHIN K,KIM K T,et al.Microstructure and mechanical properties of a thixocast Mg-Cu-Y alloy[J].Scr Mater,2003,49:687-691.
【6】MABUCHI M,HIGASHI K.Strengthening mechanisms of MgSi alloys[J].Acta Mater,1996,44:4611-4618.
【7】KATO A,HORIKIRI H,INOUE A,et al.Microstructure and mechanical properties of bulk Mg70Ca10Al20 alloys produced by extrusion of atomized amorphous powders[J].Mater Sci Eng A,1994,179/180:707-711.
【8】KAWAMURA Y,HAYASHI K,KOIKE J,et al.High strength nanocrystalline Mg-Al-Ca alloys produced by rapidly solidified powder metallurgy processing[J].Mater Sci Forum,2000,350/351:111-116.
【9】CZERWINSKI F.Magnesium alloy particulates for Thixomolding applications manufactured by rapid solidification[J].Materials Science and Engineering,2004,367 :261-271.
【10】ZHAO Hong-liang,GUAN Shao-kang,ZHENG Fei-yan,et al.Microstructure and properties of AZ31magnesium alloy with rapid solidification[J].Trans Nonferrous Met Soc China,2005,15(1):144-148.
【11】WATANABE H,MUKAI T,NIEH T G,et al.The low temperature super plasiticity of magnesium matrix composites[J].Scripta Materialia,2000,42(3):249-255.
【12】JIANG Q C,WANG H Y,MA B X,et al.Fabrication of B4C participate reinforced magnesium matrix composite by powder metallurgy[J].Journal of Alloys and Compounds,2005,386(1/2):177-181.
【13】SHENG S,CHEN Z,CHEN D,et al.The microstructures and mechanical properties of rapidly solidified and powder metallurgy AZ91 alloy[J].Metall,2008(1/2):47-50.
【14】SHIBATA T,KAWANISHI M,NAGAHORA J,et al.High specific strength of extruded Mg-Al-Ga alloys produced by rapid solidification processing[J].Mater Sci Eng A,1994,179/180:632-636.
【15】盛绍顶,陈鼎,陈振华,等.快速凝固/粉末冶金AZ91/SiCp镁基复合材料的相组成及界面[J].中国有色金属学报,2008,18(7):1185-1190.
【16】SHENG Shao-ding,CHEN Ding,CHEN Zhen-hua.Effects of Si addition on microstructure and mechanical properties of RS/PM (rapid solidification and powder metallurgy) AZ91 alloy[J].Journal of Alloys and Compounds,2009,470(1/2):L17-L20.
【17】赵青才,严红革,盛绍顶,等.快速凝固结合粉末冶金法制备SiCp/AZ91复合材料的组织及性能[J].机械工程材料,2009,33(2):39-42.
【18】NUSSBAUM G,SAINFORT P,REGAZZONI G,et al.Strengthening mechanisms in the rapidly solidified AZ91 magnesium alloy[J].Scripta Metallurgica,1989,23(7):1079-1084.
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