Study on Microstructure and Orientation Evolution of Ultra-fine Grained Copper Prepared by Asymmetrical Accumulative Rolling Bonding (AARB) During Annealing
WANG Jun-li, SHI Qing-nan, WANG Xiao-qi
Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, China
Abstract：The uniform ultra-fine grained copper was prepared by asymmetrical accumulative rolling bonding(AARB)and anneal.Microstructure and orientation evolution of samples after AARB and subsequent anneal were investigated.The deformed and annealed states were characterized by electron back scatter diffraction(EBSD)orientation image microscopy(OIM)and TEM.It was shown that there are many defects and substructure in the copper which is processed by AARB for six passes.The ultra-fine grained copper with the grain size of 200-500nm is obtained when deformed copper is annealed at 220℃ for 35-55min.Grains with all kinds of orientations exist together and some special orientations is not obvious.Elongation rate of UFG-Copper is increased.
王军丽, 史庆南, 王效琪. 异步累积叠轧技术制备超细晶铜材退火过程组织及取向研究[J]. 材料工程, 2008, 0(11): 5-8.
WANG Jun-li, SHI Qing-nan, WANG Xiao-qi. Study on Microstructure and Orientation Evolution of Ultra-fine Grained Copper Prepared by Asymmetrical Accumulative Rolling Bonding (AARB) During Annealing. Journal of Materials Engineering, 2008, 0(11): 5-8.
[1] TSUJI N,SAITO Y,LEE S H,et al.ARB and other new techniques to produce bulk ultrafine grained materials[J] Advanced Engineering Materials,2003,5(5):338-344. [2] 魏伟,陈光.大塑性变形制备块体纳米材料[J] 机械工程学报,2002,(7):1-5. [3] HUANG X,TSUHJI N,HANSEN N,et al.Microstructural evolution during accumulative roll-bonding of commercialpurity aluminum[J] Materials Science & Engineering,A,Structural Materials:Properties,Microstructure and Processing,2003,340(1 -2):265-271. [4] SAITO Y,UTAUNOMIYA H,TSUJI N,et a1.Novel ultra-high straining process for bulk materials:development of the accumulative roll-bonding process[J] Acta Mater,1999,47(2):579-583. [5] SAITO Y,TSUJI N,UTAUNOMIYA H,et al.Ultra-fine grained bulk aluminum produced by accumulative roll-bonding process[J] Scripta Mater,1998,39(9):122-1227. [6] PEREZ-PRADO M T,DEL V J A,RUANO O A.Grain refinement of Mg-Al-Zn alloys via accumulative roll bonding[J] Scripta Mater,2004,51(11):1093-1097. [7] JANG Y H,KIM S S,HAN S Z,et a1.Effect of trace phosphorous on tensile behavior of accumulative roll bonded oxygen-free copper[J] Scripta Mater,2005,52(1):21-24. [8] KIM W J,LEE J B,KIM W Y,et al.Microstructure and mechanical properties of Mg-Al-Zn alloy sheets severely deformed by asymmetrical rolling[J] Scripta Mater,2007,(56):309-312. [9] ADAM J S,MUKUL K,BRENT L A.Electron Backscatter Diffraction in Materials Science[M] New York:Kluwer Academic/Plenum Publishers,2001. [10] HIRSCH J,L(U)CKE K.Mechanism of deformation and development of rolling texture in polycrystalline FCC metal[J] Acta Metal,1988,36:2863-2927. [11] 毛卫民,赵新兵.金属的再结晶与晶粒长大[M] 北京:冶金工业出版社,1994.
2008, Vol. 0 
