轧制塑性变形对Zr65Al7.5Cu12.5Ni10Ag5非晶合金力学性能的影响Influence of Rolling Plastic Deformation on the Mechanical Properties of Zr65Al7.5Cu12.5Ni10Ag5 Bulk Amorphous Alloy
王广言,闫志杰,胡勇
摘要(Abstract)：
采用维氏显微硬度仪、扫描电子显微镜对铸态、轧制态Zr_(65)Al_(7.5)Cu_(12.5)Ni_(10)Ag_5非晶合金的硬度及剪切带形貌进行了研究,并对轧制变形量与合金的力学性能之间的关系进行了分析。结果发现,在室温轧制条件下,该合金最大变形量达到了95%;铸态试样的半圆形剪切带规律、平滑,随着轧制变形量的增加剪切带形貌变得越来越混乱,合金的硬度总体呈下降趋势。
关键词(KeyWords)： 非晶合金;塑性变形;剪切带;力学性能
基金项目(Foundation): 国家自然科学基金(50804032);; 山西省人才引进与开发专项资金(2010);; 太原市科技明星专项基金
作者(Author): 王广言,闫志杰,胡勇
参考文献(References)：
- [1]ARGON A S.Plastic deformation in metallic glasses[J].Acta Metall,1979,27(1):47-58.
- [2]KOBAYASHI S,MAEDA K,TAKEUCHI S.Computer simulation of atomic structure of Cu57Zr43amorphous alloy[J].Acta Met-all,1980,28(4):1641-1652.
- [3]STEIF P S,SPAEPENPAEPE F,HUTCHINSON J W.Strain localization in amorphous metals[J].Acta Metall,1982,30(2):447-455.
- [4]SROLOVITZ D,VITEK V,EGAMI T.Atomic study of deformation of amorphous metals[J].Acta Metall,1983,31(2):335-352.
- [5]VAIDYANATHAN R,DAO M,RAVICHANDRANG,SURESHS.Study of mechanical deformation in bulk metallic glass throughinstrumented indentation[J].Acta Mater,2001,49(18):3781-3789.
- [6]刘慧斌.Zr-基非晶合金在轧制时的自由体积与硬度变化[D].上海:上海交通大学,2007.
- [7]党淑娥,廉培霞,胡勇.轧制塑性变形对Zr60Al15Ni25非晶合金的自由体积及力学性能的影响[J].稀有金属材料科学与工程,2010,39(3):538-541.
- [8]MURALI P,RAMAMURTY U.Embrittlement of a bulk metallic glass due to sub-Tg annealing[J].Acta Mater,2005,53(5):1467-1478.
- [9]RAMAMURTY U,JANANS,KAWAMURAY,CHATTOPADHYAY K.Hardness and plastic deformation in a bulk metallic glass[J].Acta Mater,2005,53(3):705-717.
- [10]ZHANG HS,UBHASHG.Finite element analysis of interacting Vickers indentations on brittle materials[J].Acta Mater,2001,49(15):2961-2974.
- [11]SU C,ANAND L.Plane strain indentation of a Zr-based metallic glass:Experimentsand numerical simulation[J].Acta Mater,2006,54(1):179-189.
- [12]XIE S,GEORGE E P.Hardness and shear band evolution in bulk metallic glasses after plastic deformation and annealing[J].Metall Mater,2008,56(18):5202-5213.
- [13]CAO Q P,LI J F,ZHOU Y H,HORSEWELL A,JIANG J Z.Effect of rolling deformation on the microstructure of bulkCu60Zr20Ti20 metallic glass and its crystallization[J].Acta materialia,2006,54(16):4373-4383.
- [14]YAN Z J.Zr60Al15Ni25块体非晶合金在室温轧制过程中的相变[J].中国科学,2007,37(1):26-31.
- [15]DONOVAN P E,STOBBS W M.The structure of shear bands in metallic glasses[J].Acta Metall,1981,29(8):1419-1436.
- [16]SPAEPEN F.Microscopic mechanism for steady state inhomogeneous flow in metallic glasse[J].Acta Metall,1977,25(4):407-415.