Ce对Al-15%Mg_2Si复合材料组织和性能的影响
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摘要
为了研究Ce元素对Al-15%Mg_2Si复合材料微观组织和力学性能的影响,利用原位内生工艺制备了Al-15%Mg_2Si复合材料,并加入不同质量分数的Ce元素对复合材料进行细化变质.利用扫描电子显微镜进行微观组织观察,利用布氏硬度计和液压万能试验机进行力学性能测试.结果表明,添加Ce元素后Mg_2Si相以块状和粒状形态存在于Al基体中,随着Ce元素质量分数的增加,初生Mg_2Si相得到细化,其力学性能呈现先增大后减小的趋势.当Ce元素的质量分数为0.6%时,初生Mg_2Si相的细化效果最好,其力学性能最佳.
In order to study the effect of Ce element on the microstructures and mechanical properties of Al-15% Mg_2Si composite,the Al-15%Mg_2Si composite was prepared with in-situ formation technology,and the Ce element with different mass fractions was added to refine and modify the composite. In addition,the microstructures were observed with scanning electron microscope( SEM),and the mechanical properties were tested with the Brinell hardness and hydraulic universal testers. The results showthat after adding Ce element,the Mg_2Si phase with the massive and granular morphologies exists in the Al matrix. With increasing the mass fraction of Ce element,the primary Mg_2Si phase gets refined,and the mechanical properties of the composite firstly increase and then decrease. When the mass fraction of Ce element is 0. 6%,the refinement effect of primary Mg_2Si phase is best and the mechanical properties of the composite are optimal.
In order to study the effect of Ce element on the microstructures and mechanical properties of Al-15% Mg_2Si composite,the Al-15%Mg_2Si composite was prepared with in-situ formation technology,and the Ce element with different mass fractions was added to refine and modify the composite. In addition,the microstructures were observed with scanning electron microscope( SEM),and the mechanical properties were tested with the Brinell hardness and hydraulic universal testers. The results showthat after adding Ce element,the Mg_2Si phase with the massive and granular morphologies exists in the Al matrix. With increasing the mass fraction of Ce element,the primary Mg_2Si phase gets refined,and the mechanical properties of the composite firstly increase and then decrease. When the mass fraction of Ce element is 0. 6%,the refinement effect of primary Mg_2Si phase is best and the mechanical properties of the composite are optimal.
引文
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[17]吴健,古文全,薛涛,等.稀土Ce对Al-10Mg合金组织及力学性能的影响[J].特种铸造及有色合金,2014,34(1):89-92.(WU Jian,GU Wen-quan,XUE Tao,et al.Effects of cerium addition on the microstructure and mechanical properties of Al-10Mg alloys[J].Special Casting&Nonferrous Alloys,2014,34(1):89-92.)
[18]任玉艳,刘桐宇,李英民.Bi对Al-30%Mg2Si复合材料组织和性能的影响[J].沈阳工业大学学报,2015,37(2):159-164.(REN Yu-yan,LIU Tong-yu,LI Ying-min.Influence of Bi on microstructure and properties of Al-30%Mg2Si composite[J].Journal of Shenyang University of Technology,2015,37(2):159-164.)
[19]寇首鹏,孔庆富,马继刚,等.Sn对Mg-2.0Si合金组织和性能的影响[J].铸造,2016,65(3):216-219.(KOU Shou-peng,KONG Qing-fu,MA Ji-gang,et al.Effects of Sn on microstructure and mechanical property of Mg-2.0Si alloy[J].Foundry,2016,65(3):216-219.)
[2]张建新,高爱华.Al-Mg-Si系合金中稀土Y和Si的叠加作用分析[J].铸造,2012,61(8):913-916.(ZHANG Jian-xin,GAO Ai-hua.Influence of superposition of rare earth Y and Si element on Al-Mg-Si aluminum alloy[J].Foundry,2012,61(8):913-916.)
[3]Ghorbani MR,Emamy M,Khorshidi R,et al.Effect of Mn addition on the microstructure and tensile properties of Al-15%Mg2Si composite[J].Materials Science&Engineering A,2012,550(5):191-198.
[4]Zhang J,Fan Z,Wang Y Q,et al.Microstructural development of Al-15wt.%Mg2Si in situ composite with mischmetal addition[J].Materials Science&Engineering A,2000,281(1/2):104-112.
[5]张健,王玉庆,杨滨,等.原位内生Al/Mg2Si/Si复合材料铸态组织研究[J].复合材料学报,1999,16(4):30-34.(ZHANG Jian,WANG Yu-qing,YANG Bin,et al.On the microstructure of an as-cast Al/Mg2Si/Si in-situ composite[J].Acta Materiae Compositae Sinica,1999,16(4):30-34.)
[6]Wu X F,Zhang G G,Wu F F.Microstructure and dry sliding wear behavior of cast Al-Mg2Si in-situ metal matrix composite modified by Nd[J].Rare Metals,2013,32(3):284-289.
[7]Ghorbani MR,Emamy M,Nemati N.Microstructural and mechanical characterization of Al-15%Mg2Si composite containing chromium[J].Materials&Design,2011,32(8):4262-4269.
[8]Nasiri N,Emamy M,Malekan A,et al.Microstructure and tensile properties of cast Al-15%Mg2Si composite:effects of phosphorous addition and heat treatment[J].Materials Science&Engineering A,2012,556(3):446-453.
[9]Razaghian A,Bahrami A,Emamy M.The influence of Li on the tensile properties of extruded in situ Al-15%Mg2Si composite[J].Materials Science&Engineering A,2012,532(1):346-353.
[10]Emamy M,Khodadadi M,Raouf A H,et al.The influence of Ni addition and hot-extrusion on the microstructure and tensile properties of Al-15%Mg2Si composite[J].Materials&Design,2013,46(4):381-390.
[11]Emamy M,Nodooshan H R J,Malekan A.The microstructure,hardness and tensile properties of Al-15%Mg2Si in situ composite with yttrium addition[J].Materials&Design,2011,32(8/9):4559-4566.
[12]吴敌,齐锦刚,李扬,等.变质元素对Al-Mg2Si合金形核机理的影响[J].材料热处理学报,2014,35(增刊2):14-19.(WU Di,QI Jin-gang,LI Yang,et al.Effect of modifying elements on nucleation mechanism of Al-Mg2Si alloy[J].Transactions of Materials and Heat Treatment,2014,35(Sup2):14-19.)
[13]李鹏飞,兰晔峰,简医生,等.Ce对Al-18%Si-10%Mg合金显微组织与力学性能的影响[J].铸造技术,2015,36(3):559-561.(LI Peng-fei,LAN Ye-feng,JIAN Yi-sheng,et al.Effect of Ce on microstructures and mechanical properties of alloy Al-18%Si-10%Mg[J].Foundry Technology,2015,36(3):559-561.)
[14]刘桐宇.Al/Mg2Si复合材料组织与性能的研究[D].沈阳:沈阳工业大学,2015.(LIU Tong-yu.Study on microstructure and mechanical properties of Al/Mg2Si composite[D].Shenyang:Shenyang University and Technology,2015.)
[15]任玉艳,刘桐宇,李英民.稀土元素钇对Al-30wt%Mg2Si复合材料组织和力学性能的影响[J].复合材料学报,2015,32(5):1367-1373.(REN Yu-yan,LIU Tong-yu,LI Ying-min.Influence of rare earth element Y on microstructure and mechanical properties of Al-30wt%Mg2Si composites[J].Acta Materiae Compositae Sinica,2015,32(5):1367-1373.)
[16]潘复生,丁培道.铝合金中的稀土化合物[J].轻合金加工技术,1994,22(6):38-42.(PAN Fu-sheng,DING Pei-dao.Rare earth compound in aluminum alloy[J].Light Alloy Fabrication Technology,1994,22(6):38-42.)
[17]吴健,古文全,薛涛,等.稀土Ce对Al-10Mg合金组织及力学性能的影响[J].特种铸造及有色合金,2014,34(1):89-92.(WU Jian,GU Wen-quan,XUE Tao,et al.Effects of cerium addition on the microstructure and mechanical properties of Al-10Mg alloys[J].Special Casting&Nonferrous Alloys,2014,34(1):89-92.)
[18]任玉艳,刘桐宇,李英民.Bi对Al-30%Mg2Si复合材料组织和性能的影响[J].沈阳工业大学学报,2015,37(2):159-164.(REN Yu-yan,LIU Tong-yu,LI Ying-min.Influence of Bi on microstructure and properties of Al-30%Mg2Si composite[J].Journal of Shenyang University of Technology,2015,37(2):159-164.)
[19]寇首鹏,孔庆富,马继刚,等.Sn对Mg-2.0Si合金组织和性能的影响[J].铸造,2016,65(3):216-219.(KOU Shou-peng,KONG Qing-fu,MA Ji-gang,et al.Effects of Sn on microstructure and mechanical property of Mg-2.0Si alloy[J].Foundry,2016,65(3):216-219.)