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《Chinese Journal of Materials Research》 2007-01
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Grain refinement and its correlation with strain for pure copper subjected to high pressure torsion

SHANGGUAN Fengshou XIE Jijia HONG Youshi~(**) (State Key Laboratory of Nonlinear Mechanics (LNM),Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080)  
A holding apparatus for high pressure torsion (HPT) treatment equipped with materials testing machine was designed and manufactured.Samples of pure copper were HPT treated by different counts of revolution i.e.experienced different extent of strain.Electron back scattered diffraction (EBSD) was used to measure the grain size of HPT treated samples.The relationship between grain refinement and strain was analyzed and a model of simple shear sphere was proposed to account for grain refinement. The results revealed that grain refinement dramatically develops with increasing strain,with the average grain size down to one fiftieth of its original average size.The grain size decreases significantly when shear strain is less than 10,whereas when shear strain is larger than 10,the reduction of grain size is greatly decelerated.There is a power law relation between Stuwe equivalent strain and grain size variation.Based on the proposed model,the tendency of grain refinement as a function of increasing shear strain was obtained.The predicted grain size reduction with increasing strain from the model is in good agreement with experimental results.
【Fund】: 国家自然科学基金10472117资助项目.
【CateGory Index】: TG115.5
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【References】
Chinese Journal Full-text Database 2 Hits
1 SHANG GUAN Feng-shou QIAN Gui-an HONG You-shi(State Key Laboratory of Nonlinear Mechanics (LNM),Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080 China);Deformation analysis of copper samples subjected to destined high pressure torsion[J];Journal of Plasticity Engineering;2009-01
2 LUO Xu1,SHI Qing-nan2,LIU Shao-hua1,CHEN Yu-liang2(1 Faculty of Materials and Metallurgical Engineering,Kunming University of Science & Technology,Kunming,Yunnan,650093,China)(2 Key Lab of Advanced Materials of Yunnan Province,Kunming University of Science & Technology,Kunming,Yunnan,650093,China);Recent Development of Micro-structure Analysis Theory in Plastic Deformation Process[J];Nonferrous Metals Processing;2008-04
【Co-citations】
Chinese Journal Full-text Database 7 Hits
1 XU Yongbo~(1**) YANG Huajie~1 M.A.Meyers~2 1.Institute of Metal Research,Shenyang 110016 2.University of California,San Diego,La Jolla,CA 92093-0411,USA;Application of EBSD in the investigation of the deformation microstructure induced during high-strain rate loading[J];Chinese Journal of Materials Research;2009-06
2 SHANGGUAN Feng-shou1,DONG Man-sheng2,HONG You-shi1(1.Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,China;2.School of Civil Engineering,Hefei University of Technology,Hefei 230009,China);Analysis of deformation in destined high pressure torsion[J];Journal of Hefei University of Technology(Natural Science);2008-08
3 GUO Yu-hang,JIN Yun-xue,ZHANG Li-hua,ZHOU hu(Provincial Key Lab.of Advanced Welding Technology,Jiangsu Univ.of Sci.and Tech.,Zhenjiang 212003,China);METALLOGRAPHIC SAMPLE PREPARATION FOR EBSD[J];Physical Testing and Chemical Analysis(Part A:Physical Testing);2007-08
4 SHANG GUAN Feng-shou QIAN Gui-an HONG You-shi(State Key Laboratory of Nonlinear Mechanics (LNM),Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080 China);Deformation analysis of copper samples subjected to destined high pressure torsion[J];Journal of Plasticity Engineering;2009-01
5 YAN Wen CHEN Jian (School of Materials and Chemical Engineering,Xi'an Technological University,Xi'an 710032,China);Orientation Image Microscopy and Its Application in the Study of Single Crystal Copper Wires[J];Journal of Xi'an Technological University;2007-02
6 XU Hai-jun,JIN Shu-yan,ZHENG Bo-rang(Faculty of Earth Sciences,China University of Geosciences,Wuhan,Hubei 430074,China);New Technique of Petrofabric:Electron Backscatter Diffraction(EBSD)[J];Geoscience;2007-02
7 WANG Jue 1,2,MALOUFI Nabila2,FAN Zhanguo 1,XUE Xiangxin 1,ESLING Claude2 (1. School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China;2. LETAM-ISGMP,Université Paul Verlaine-Metz,Metz 57045,France);Microstructure and texture analysis of YBCO thick film with peritectic growth on unoriented silver substrate[J];稀土学报(英文版);2009-03
【Co-references】
Chinese Journal Full-text Database 3 Hits
1 Qi Jianqun1,Dong Chunyu1,Zhao Zhiyi2,Jia Xuejun1,Sun Changjie1 (1.Tangshan Iron and Steel Co.,Ltd.,Tangshan 063016;2.University of Science and Technology Beijing Beijing 100083);Effect of Cold Rolled Reduction Ratio on Texture and Properties of Spcc Cold Rolled Steel Sheet[J];Metal World;2007-04
2 WEI Kun-xia, SHI Qing-nan, WEI Wei, ZHONG Bao-wei( Department of Materials Science and Engineering, Jiangsu Polytechnic University, Changzhou 213016, China; School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China);Effect of Accumulative Roll - Bonding at Room Temperature on the Mechanical Properties of Pure Aluminium[J];Journal of Jiangsu Polytechnic University;2004-04
3 LIU Jianming ,YANG Suyuan, WANG Lu, TAN Chengwen (Beijing Institute of Technology,The Department of Material Science and Engineering,Beijing 100081,China);Application Research of Equal-channel Angular Pressing Technology[J];New Technology & New Process;2007-03
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