Mg-Zn-Ca-Ti非晶合金的非等温晶化动力学
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摘要
采用机械合金化的方法制备Mg_(48)Zn_(40)Ca_5Ti_7和Mg_(58)Zn_(30)Ca_5Ti_7非晶合金。利用X射线衍射仪(XRD)对其物相进行检测;结合差示扫描量热分析方法(DSC),对试样在不同升温速率下的非等温晶化进行研究。结果表明:Mg_(48)Zn_(40)Ca_5Ti_7和Mg_(58)Zn_(30)Ca_5Ti_7基本形成非晶;随着加热速率的增加,合金结晶峰均向更高温度的方向移动;用Kissinger、Ozawa和Augis-Bennett方法分别计算出Mg_(48)Zn_(40)Ca_5Ti_7和Mg_(58)Zn_(30)Ca_5Ti_7非晶合金的表观激活能Eα,发现Mg_(48)Zn_(40)Ca_5Ti_7非晶合金的Eα在250kJ·mol~(-1)~270kJ·mol~(-1)范围内,Mg_(58)Zn_(30)Ca_5Ti_7非晶合金的Eα在180kJ·mol~(-1)~200kJ·mol~(-1)范围内;Mg_(48)Zn_(40)Ca_5Ti_7非晶合金的Avrami指数n在不同升温速率下均在1左右;Mg_(58)Zn_(30)Ca_5Ti_7非晶合金的Avrami指数n随着升温速率的增加,由2.7减小到1.9。
Mg_(48)Zn_(40)Ca_5Ti_7 and Mg_(58)Zn_(30)Ca_5Ti_7 amorphous alloys were prepared by mechanical alloying(MA).The non-isothermal crystallization of the amorphous alloys at different heating rates was studied by Xray diffraction and differential scanning calorimeter.Results indicate that with the increase of heating rate,the crystallization peak of the alloy moves towards high temperature.The apparent activation energy(Eα)of Mg_(48)Zn_(40)Ca_5Ti_7 and Mg_(58)Zn_(30)Ca_5Ti_7 amorphous alloys were respectively calculated using the methods of Kissinger,Ozawa and Augis-Bennett.It was then found that the apparent activation energy(Eα)of Mg_(48)Zn_(40)Ca_5Ti_7 amorphous alloy is in the range of 250 kJ·mol~(-1)~270 kJ·mol~(-1) and the apparent activation energy(Eα)of Mg_(58)Zn_(30)Ca_5Ti_7 amorphous alloy is in the range of 180 kJ·mol~(-1)~200 kJ·mol~(-1).The Avrami exponent(n)of Mg_(48)Zn_(40)Ca_5Ti_7 amorphous alloy is always around 1 at different heating rates,and the Avrami exponent(n)of Mg_(58)Zn_(30)Ca_5Ti_7 amorphous alloy changes from 2.7 to 1.9 with increasing heating rate.
Mg_(48)Zn_(40)Ca_5Ti_7 and Mg_(58)Zn_(30)Ca_5Ti_7 amorphous alloys were prepared by mechanical alloying(MA).The non-isothermal crystallization of the amorphous alloys at different heating rates was studied by Xray diffraction and differential scanning calorimeter.Results indicate that with the increase of heating rate,the crystallization peak of the alloy moves towards high temperature.The apparent activation energy(Eα)of Mg_(48)Zn_(40)Ca_5Ti_7 and Mg_(58)Zn_(30)Ca_5Ti_7 amorphous alloys were respectively calculated using the methods of Kissinger,Ozawa and Augis-Bennett.It was then found that the apparent activation energy(Eα)of Mg_(48)Zn_(40)Ca_5Ti_7 amorphous alloy is in the range of 250 kJ·mol~(-1)~270 kJ·mol~(-1) and the apparent activation energy(Eα)of Mg_(58)Zn_(30)Ca_5Ti_7 amorphous alloy is in the range of 180 kJ·mol~(-1)~200 kJ·mol~(-1).The Avrami exponent(n)of Mg_(48)Zn_(40)Ca_5Ti_7 amorphous alloy is always around 1 at different heating rates,and the Avrami exponent(n)of Mg_(58)Zn_(30)Ca_5Ti_7 amorphous alloy changes from 2.7 to 1.9 with increasing heating rate.
引文
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[30]匡敬忠.冷却-加热对CaO-Al2O3-SiO2系玻璃析晶动力学的影响[J].材料热处理学报,2012,33(1):37~43.
[31]彭坤,唐元洪,胡爱平,等.Fe85Hf7B7Cu1非晶合金的非等温晶化动力学[J].材料科学与工程学报,2008,26(1):39~41.
[2]Bae D H,Lee M H,Kim K T,et al.Application of Quasicrystalline Particles as a Strengthening Phase in Mg-Zn-Y Alloys[J].Journal of Alloys And Compounds,2002,342(1~2):445~450.
[3]Zheng M Y,Qiao X G,Xu S W,Wu K,Kamado S,Kojima Y.In-Situ,Quasicrystal-reinforced Magnesium Matrix Composite Processed by Equal Channel Angular Extrusion(ECAE)[J].Journal of Materials Science,2005,40(9~10):2587~2590.
[4]Mordike B L,Ebert T.Magnesium:Properties-applicationspotential[J].Materials Science and Engineering A,2001,302(1):37~45.
[5]向冬霞,曹建勇,王军.镁合金配件在汽车、摩托车上的应用[J].汽车工艺与材料,2002,Z1:41~43.
[6]Yang H W,Dong P,Wang J Q.Glass Formability and Structural Stability of Al-Based Alloy Systems[J].Materials Science and Engineering A,2007,449~451(12):273~276.
[7]Wang W H.Roles of Minor Additions In Formation and Properties of Bulk Metallic Glasses[J].Progress in Materialscience,2007,52(4):540~596.
[8]Hu Z Q.Recent Progress In The Area Of Bulk Amorphous Alloys And Composites[J].Acta Metallurgica Sinica-Chinese Edition,2010,46(11):1391~1421.
[9]Kumar G,Rector D,Conner R D,Schroers J.Embrittlement of Zr-Based Bulk Metallic Glasses[J].Acta Materialia,2009,57(12):3572~3583.
[10]康凯,王晓军,陈学定,刘国瑞.Mg65Cu15Ag10Y10非晶合金的晶化动力学[J].中国稀土学报,2006,24(6):685~689.
[11]邵阳,陈刚,赵玉涛.Cuysi-Mg60Cu30Y10块体非晶合金复合材料的晶化行为[J].中国有色金属学报,2013,23(1):212~218.
[12]何世文,朱艺添,刘咏.铁基块体非晶合金的制备及其晶化动力学[J].材料热处理学报,2010,31(7):10~14.
[13]邵阳,陈刚,赵玉涛,等.Mg60Cu30Y10块体非晶合金的变温晶化行为[J].材料热处理学报,2012,33(12):25~29.
[14]Jiang X D,Zhang H W,Wen Q Y.Crystallization Kinetics of Magnetron-sputtered Amorphous Conbzr thin Films[J].Vacuum,2005,77(2):209~215.
[15]汤富领,陈功宝,谢勇,路文江.Al表面的“类液”结构及其自扩散通道[J].物理学报,2011,60(6):564~571.
[16]Park E S,Kang H G,Kim W T,Kim D H.The Effect of Ag Addition on the Glass-forming Ability of Mg-Cu-Y Metallic Glass Alloys[J].Journal of Non-Crystalline Solids,2001,279(2~3):154~160.
[17]Ma H,Shi L L,Xu J,Li Y.Discovering Inch-Diameter Metallic Glasses in Three-Dimensional Composition Space[J].Applied Physics Letters,2005,87(18):42.
[18]Men H,Kim W T,Kim D H.Glass Formation and Crystallzation Behavior in Mg65Cu25Y10-Xgdx(X=0.5 And 10)Alloys[J].Journal of Non-Crystalline Solids,2004,337(1):29~35.
[19]Li Z,Gu X,Lou S,Zheng Y.The Development of Binary MgCa Alloys for Use as Biodegradable Materials within Bone[J].Biomaterials,2008,29(10):1329~1344.
[20]Ma E,Xu J.Biodegradable Alloys:the Glass Window of Opportunities[J].Nature Materials,2009,8(11):855~857.
[21]Tang F L,Huang M,Lu W J,Yu W Y.Structural Relaxation and Jahn-teller Distortion of Lamno3(001)Surface[J].Surface Science,2009,603(6):949~954.
[22]崔红卫,刘俊成,叶伟,李红,高巧春.Al-Ti,AI-Ti-C中间合金对AZ91D镁合金组织和性能的影响[J].铸造技术,2008,29(1):80~84.
[23]Sun S H,Chen X M,Wei Q S,Zhang F X,Li Y F,Yang B.Al Initio Molecular Dynamics Study of the Al-Zn Alloy Structure Transformation under Vacuum and 373-1173K[J].Journal of Materials Science and Engineering,2014,32(2):168~173.
[24]王贞,刘静,汪汝武,等.Co-Finemet非晶合金晶化动力学及其纳米晶粉芯的磁性[J].材料科学与工程学报,2011,29(6):929~934.
[25]Kissinger H E.Reaction Kinetics in Differential Thermal Analysis[J].Analytical Chemisty,1957,29(11):1702~1706.
[26]Ozawa T.Kinetic Analysis of Derivative Curves in Thermal Analysis[J].Journal of Thermal Analysis and Calorimetry,1970,2(3):301~324.
[27]Augis J A,Bennett J E.Calculation of the Avrami Parameters for Heterogeneous Solid State Reactions using A Modification of the Kissinger Method[J].Journal of Thermal Analysis,1978,13(2):283~292.
[28]赵仲恺,周海涛,蒋永锋,等.非晶软磁合金Co65Fe4Ni2Si15B14的纳米晶化动力学研究[J].材料导报,2009,23(12):13~16.
[29]段丽丽,张铮,李晓成,吴晓春.SDP2新型贝氏体模具钢的箱变及动力学[J].材料热处理学报,2015,38(8):174~180.
[30]匡敬忠.冷却-加热对CaO-Al2O3-SiO2系玻璃析晶动力学的影响[J].材料热处理学报,2012,33(1):37~43.
[31]彭坤,唐元洪,胡爱平,等.Fe85Hf7B7Cu1非晶合金的非等温晶化动力学[J].材料科学与工程学报,2008,26(1):39~41.