等效应变对Cu-38Zn合金交叉模压形变后组织和性能的影响Influence of equivalent strain on microstructure and hardness of Cu- 38Zn alloy subjected to cross groove pressing
彭开萍,张秀妹,林雪慧
摘要(Abstract):
采用ABAQUS软件对Cu-38Zn合金交叉模压形变过程进行了有限元模拟,观察并研究了Cu-38Zn合金的微观组织和硬度,探讨了模压形变的等效应变与材料组织和性能的关系。结果表明,交叉模压形变后的等效应变分布是不均匀的,造成微观组织和硬度的分布也不均匀。随着模压形变周期增大,Cu-38Zn合金的等效应变增大;晶粒尺寸减小;显微硬度增大。等效应变还影响模压形变的变形机理。
关键词(KeyWords): 模压形变;有限元模拟;大塑性变形;Cu-38Zn合金;晶粒细化
基金项目(Foundation): 福建省自然科学基金资助项目(2011J01290)
作者(Author): 彭开萍,张秀妹,林雪慧
DOI: 10.13289/j.issn.1009-6264.2014.02.036
参考文献(References):
- [1]索涛,李玉龙.等径通道挤压中晶粒细化影响因素的研究进展[J].材料科学与工程学报,2004,22(1):132-137.SUO Tao,LI Yu-long.Progress in influence factor of grain refinement during equal-channel angular pressing[J].Journal of Materials Science and Engineering,2004,22(1):132-137.
- [2]刘建军,王爱民,张海峰,等.高压原位合成块体纳米Mg-Zn合金[J].材料研究学报,2001,15(3):299-302.LIU Jian-jun,WANG Ai-ming,ZHANG Hai-feng,et al.In situ synthesis of bulk nanocrystalline magnesium zinc alloy under high pressure[J].Chinese Journal of Material Research,2001,15(3):299-302.
- [3]王素梅,孙庚宁,毕见强.大塑性变形法制备块体纳米材料[J].金属热处理,2003,28(5):5-7.WANG Su-mei,SUN Ken-ning,BI Jian-qiang.Nanostructured materials prepared by severe plastic deformation[J].Heat Treatment of Metals,2003,28(5):5-7.
- [4]Shin D H,Park J,Kim Y,et al.Constrained groove pressing and its application to grain refinement of aluminum[J].Materials Science and Engineering A,2002,328(1-2):98-103.
- [5]Krishnaiah A,Chakkingal U,Venugopal P.Production of ultrafine grain sizes in aluminium sheets by severe plastic deformation using the technique of groove pressing[J].Scripta Materialia,2005,52(12):1229-1233.
- [6]Krishnaiah A,Chakkingal U,Venugopal P.Applicability of the groove pressing technique for grain refinement in commercial purity copper[J].Materials Science and Engineering A,2005,410-411:337-340.
- [7]Peng K,Su L,Shaw L L,et al.Grain refinement and crack prevention in constrained groove pressing of two-phase Cu-Zn alloys[J].Scripta Materialia,2007,56(11):987-990.
- [8]Khodabakhshi F,Kazeminezhad M,Kokabi A H.Constrained groove pressing of low carbon steel:nano-structure and mechanical properties[J].Materials Science and Engineering A,2010,527(16-17):4043-4049.
- [9]Shirdel A,Khajeh A,Moshksar M M.Experimental and finite element investigation of semi-constrained groove pressing process[J].Materials&Design,2010,31(2):946-950.
- [10]Yoon S C,Krishnaiah A,Chakkingal U,et al.Severe plastic deformation and strain localization in groove pressing[J].Computational Materials Science,2008,43(4):641-645.
- [11]Lee J W,Park J J.Numerical and experimental investigations of constrained groove pressing and rolling for grain refinement[J].Journal of Materials Processing Technology,2002,130-131(0):208-213.
- [12]Peng K,Mou X,Zeng J,et al.Equivalent strain,microstructure and hardness of h62 brass deformed by constrained groove pressing[J].Computational Materials Science,2011,50(4):1526-1532.
- [13]Shaw L L,Villegas J,Huang J,et al.Strengthening via deformation twinning in a nickel alloy[J].Materials Science and Engineering A,2008,480(1-2):75-83.
- [14]Li Y S,Tao N R,Lu K.Microstructural evolution and nanostructure formation in copper during dynamic plastic deformation at cryogenic temperatures[J].Acta Materialia,2008,56(2):230-241.
- [15]Ortiz A L,Tian J W,Villegas J C,et al.Interrogation of the microstructure and residual stress of a nickel-base alloy subjected to surface severe plastic deformation[J].Acta Materialia,2008,56(3):413-426.
- [16]Huang X,Hansen N.Flow stress and microstructures of fine grained copper[J].Materials Science and Engineering A,2004,387-389:186-190.
- [17]Jiang L N,Da M J,Xi G F,et al.Mechanical properties and microstructures of Al-Mg-Mn-Zr alloy processed by equal channel angular pressing at elevated temperature[J].Materials Characterization,2008,59(3):306-311.
- [18]吴世丁,安祥海,韩卫忠,等.等通道转角挤压过程中fcc金属的微观结构演化与力学性能[J].金属学报,2010,46(3)257-276.WU Shi-ding,AN Xiang-hai,HAN Wei-zhong,et al.Microstructure evolution and mechanical properties of FCC metallic materials subjected to equal channel angular pressing[J].Acta Metallurgica Sinica,2010,46(3)257-276.
- [19]Huang C X,Hu W,Yang G,et al.The effect of stacking fault energy on equilibrium grain size and tensile properties of nanostructured copper and copper-aluminum alloys processed by equal channel angular pressing[J].Materials Science&Engineering A,2012,556:638-647.
文章评论(Comment):
|
||||||||||||||||||
|
||||||||||||||||||