材料研究学报  2007, Vol. 21 Issue (1): 72-76

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高压扭转致纯铜晶粒细化及与应变的关系

上官丰收　 谢季佳　 洪友士

上官丰收; 谢季佳; 洪友士 . 高压扭转致纯铜晶粒细化及与应变的关系[J]. 材料研究学报, 2007, 21(1): 72-76.

摘要 参考文献 相关文章 Metrics 全文: PDF(497 KB)   摘要: 设计并加工了在材料试验机上使用的高压扭转夹持装置,并用装置获得了不同扭转变形量的纯铜试样.使用电子背散射衍射技术测量了处理后试样晶粒尺寸沿径向的分布.对比分析了晶粒细化程度和应变量的关系,提出了一个描述晶粒细化的简单剪切球模型.结果表明,晶粒细化程度随着应变量的增大而增强,平均晶粒尺寸为原始平均尺寸的1/50.当剪切应变小于10时,晶粒尺寸随着剪切应变的增大迅速变小;当剪切应变大于10时,晶粒尺寸的变化趋于缓慢,晶粒细化程度与Stuwe等效应变之间有幂函数关系.依据简单剪切球形晶粒的模型,得到了晶粒细化程度随剪切应变增大而增强的规律,并与实验数据的变化趋势一致. Key words： 收稿日期: 1900-01-01      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 上官丰收 谢季佳 洪友士 44.8K 链接本文: https://www.cjmr.org/CN/Y2007/V21/I1/72 1 R.Z.Valiev,R.K.Islamgaliev,I.V.Alexandrov,Bulk nanos- tructured materials from severe plastic deformation, Progress in Materials,45(2),103(2000) 2 R.Z.Valiev,A.V.Korznikov,R.R.Mulyukov,Structure and properties of ultrafine-grained materials produced by se- vere plastic deformation,Materials Science Enginnering A,168(2),141(1993) 3 R.Z.Valiev,Yu.V.Ivanisenko,E.F.Rauch,B.Baudelet, Structure and deformaton behaviour of Armco iron sub- jected to severe plastic deformation,Acta Materialia, 44(12),4705(1996) 4 Y.T.Zhu,H.Jiang,J.Huang,T.C.Lowe,A new route to bulk nanostructured metals,Metallurgical and Materials Transactions,32A(6),1559(2001) 5 A.P.Zhilyaev,G.V.Nurislamova,B.K.Kim,M.D.Bar, J.A.Szpunar,T.G.Langdon,Experimental parameters in- fluencing grain refinement and microstructural evolution during high-pressure torsion,Acta Materialia,51(3), 753(2003) 6 A.P.Zhilyaev,S.Lee,G.V.Nurislamova,R.Z.Valiev, T.G.Langdon,Microhardness and microstructural evolu- tion in pure nickel during high-pressure torsion,Scripta Materialia,44(12),2753(2001) 7 A.Vorhauer,R.Pippan,On the homogeneity of deforma- tion by high pressure torsion,Scripta Materialia,51(9), 921(2004) 8 O.Dimitrov,Nominal and equivalent strains in severe plas- tic deformation process,Annales de Chimie Science des Matériaux,27(3),15(2002) 9 F.U.Enikeev,Kinematics of the process of extension with torsion of a homogeneous cylindrical bar of superplastic material,Metally (in Russian),(2),89(1999) 10 H.P.Stuwe,Equivalent strains in severe plastic deforma- tion,Advanced Engineering Materials,5(5),291(2003) 11 F.J.Humphrerys,Review grain and subgrain characteriza- tion by electron backscatter diffraction,Journal of Mate- rials Science,36(16),3833(2001) 12 F.J.Humphrerys,Characterization of fine-scale mi- crostructures by electron backscatter diffraction (EBSD), Scripta Materialia,51(8),771(2004) 13 D.A.Hughes,N.Hansen,Graded nanostructures produced by sliding and exhibiting universal behavior,Physical Re- view Letters,87(13),135503(2001) 14 P.S.Bate,W.B.Hutchinson,Grain boundary area and de- formation,Scripta Materialia,52(3),199(2005) No related articles found! Viewed Full text Abstract Cited   Shared      Discussed