采用ARAMIS三维变形分析测试系统对Zr65Cu20Al10Fe5块体非晶合金在400℃和应变速率为1×10-3s-1条件下的高温拉伸变形行为进行研究,并利用X射线衍射(XRD)对合金试样的显微组织进行分析.结果表明,在变形条件下,该Zr-基非晶合金可表现出良好的塑性,其伸长率为103％,其变形模式为非牛顿流变.用三维变形分析得到的不同变形时刻的应变分布图显示,随着变形量的增加,试样变形变得不均匀,在变形后期会出现颈缩现象.XRD分析结果表明,在拉伸变形过程中,非晶合金试样会发生晶化,其晶化程度与试样不同部位的局部应变量大小有关,局部变形量较大的区域晶化程度较高,而较高含量纳米晶的存在导致了该区域具有较高的变形速率.
参考文献
| [1] | Haein Choi-Yim;Robert D. Conner;Frigyes Szuecs .Quasistatic and dynamic deformation of tungsten reinforced Zr_(57)Nb_5Al_(10)Cu_(15.4)Ni_(12.6) bulk metallic glass matrix composites[J].Scripta materialia,2001(9):1039-1045. |
| [2] | X.P. Nie;X.H. Yang;Y. Ma.Thermal oxidation effect on corrosion behavior of Zr_(46)Cu_(37.6)Ag_(8.4)Al_8 bulk metallic glass[J].Intermetallics,2012:84-91. |
| [3] | Christopher A. Schuh;Todd C. Hufnagel;Upadrasta Ramamurty .Mechanical behavior of amorphous alloys[J].Acta materialia,2007(12):4067-4109. |
| [4] | R. Maass;D. Klaumunzer;E.I. Preiss .Single shear-band plasticity in a bulk metallic glass at cryogenic temperatures[J].Scripta materialia,2012(5):231-234. |
| [5] | Lewandowski JJ;Greer AL .Temperature rise at shear bands in metallic glasses[J].Nature materials,2006(1):15-18. |
| [6] | Z.F. Zhang;J. Eckert;L. Schultz .Difference in compressive and tensile fracture mechanisms of Zr_(59)Cu_(20)Al_(10)Ni_8Ti_3 bulk metallic glass[J].Acta materialia,2003(4):1167-1179. |
| [7] | Nieh T G;Hsiung L M;Wadsworth J et al.High strain rate superplasticity in a continuously recrystallized Al-6％ Mg-0.3％ Sc alloy[J].Acta Materialia,1998,46(08):2789-2800. |
| [8] | Laws, KJ;Gun, B;Ferry, M .Mechanical stability of Ca65Mg15Zn20 bulk metallic glass during deformation in the supercooled liquid region[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1-2):198-204. |
| [9] | Kawamura Y.;Kato H.;Mano H.;Inoue A.;Nakamura T. .Newtonian and non-Newtonian viscosity of supercooled liquid in metallic glasses[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(0):674-678. |
| [10] | Reger-Leonhard A.;Heilmajer M. .NEWTONIAN FLOW OF Zr_(55)Cu_(30)A1_(10)Ni_5 BULK METALLIC GLASSY ALLOYS[J].Scripta materialia,2000(5):459-464. |
| [11] | Kato H;Kawamura Y;Inoue A et al.Newtonian to non-Newtonian master flow curves of a bulk glass alloy[J].Applied Physics Letters,1998,73(25):3665-3667. |
| [12] | H. Kato;A. Inoue;H.-S. Chen .On structural relaxation and viscous work heating during non-Newtonian viscous flow in a Zr_(55)Al_(10)Ni_5Cu_(30) bulk metallic glass[J].Acta materialia,2006(4):891-898. |
| [13] | Chen H;He Y;Shiflet G J et al.Deformation-induced nanocrystal formation in shear bands of amorphous alloys[J].NATURE,1994,367(10):541-543. |
| [14] | T. G. NIEH;J. WADSWORTH;C. T. LIU .PLASTICITY AND STRUCTURAL INSTABILITY IN A BULK METALLIC GLASS DEFORMED IN THE SUPERCOOLED LIQUID REGION[J].Acta materialia,2001(15):2887-2896. |
| [15] | W. J. Kim;D. S. Ma;H. G. Jeong .Superplastic flow in a Zr_(65)Al_(10)Ni_(10)Cu_(15) metallic glass crystallized during deformation in a supercooled liquid region[J].Scripta materialia,2003(11):1067-1073. |
| [16] | Hyung-Seop Shin;Young-Jin Jeong;Ho-Yeon Choi;Akihisa Inoue .Influence of crystallization on the deformation behavior of Zr_(55)Al_(10)Ni_5Cu_(30) bulk metallic glass in the supercooled liquid region[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):243-247. |
| [17] | S.F. Guo;K.C. Chan;Q. Chen .Tensile plastic deformation of a Zr-based bulk metallic glass composite in the supercooled liquid region[J].Scripta materialia,2009(6):369-372. |
| [18] | Wang G;Shen J;Sun JF;Huang YJ;Zou J;Lu ZP;Stachurski ZH;Zhou BD .Superplasticity and superplastic forming ability of a Zr-Ti-Ni-Cu-Be bulk metallic glass in the supercooled liquid recgion[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2005(3):209-217. |
| [19] | J. SHEN;G.WANG;J.F. SUN .Superplastic deformation behavior of Zr_(41.25)Ti_(13.75)Ni_(10)Cu_(12.5)Be_(22.5) bulk metallic glass in the supercooled liquid region[J].Intermetallics,2005(1):79-85. |
| [20] | Bing Pan;Kai Li .A fast digital image correlation method for deformation measurement[J].Optics and Lasers in Engineering,2011(7):841-847. |
| [21] | Zhengzong Tang;Jin Liang;Zhenzhong Xiao;Cheng Guo .Large deformation measurement scheme for 3D digital image correlation method[J].Optics and Lasers in Engineering,2012(2):122-130. |
| [22] | Spaepen F .A microscopic mechanism for steady state inhomogeneous flow in metallic glasses[J].ACTA METALLURGICA,1977,25(04):407-415. |
| [23] | W.D. Luo;B. Yang;G.L. Chen .Effect of Ar~+ Ion irradiation on the microstructure and properties of Zr-Cu-Fe-Al bulk metallic glass[J].Scripta materialia,2011(7):625-628. |
| [24] | D.H. Bae;H.K. Lim;S.H. Kim .Mechanical behavior of a bulk Cu-Ti-Zr-Ni-Si-Sn metallic glass forming nano-crystal aggregate bands during deformation in the supercooled liquid region[J].Acta materialia,2002(7):1749-1759. |
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