《重庆大学模版》PPT课件.ppt

,XXX M.S candidate StudNo: Email: Department of Materials Science & Engineering, Chongqing University, Chongqing, P.R. China Supervised by Prof. XXX,7/23/2019,Research on Texture Evolution,Mechanical and Electrical Properties of Cu-Nb Composite Wires,Department of Materials Science & Engineering, Chongqing University,I. Introduction: My hometown,7/23/2019,2,Department of Materials Science & Engineering, Chongqing University,I. Introduction: My hometown,7/23/2019,3,Department of Materials Science & Engineering, Chongqing University,7/23/2019,4,I. Introduction: Myself,Department of Materials Science & Engineering, Chongqing University,I. Plastic Deformation Theory: Deformation Modes,7/23/2019,5,Department of Materials Science & Engineering, Chongqing University,II. Plastic Deformation Theory,7/23/2019,6,TEM images of accumulative rolling and bundling Cu-Nb composites (a), and accumulative drawing and bundling Cu-Nb composites (b),Department of Materials Science & Engineering, Chongqing University,7/23/2019,7,IPF and misorientation distributions of Cu matrix within the wire with a strain of 24.8. Scale bar=20m,Drawing direction,II. Plastic Deformation Theory: Texture,Department of Materials Science & Engineering, Chongqing University,II. Plastic Deformation Theory: Hardness,7/23/2019,8,Microhardness of Cu-Nb in radial direction,Hardness (HV) of in situ (a) and ADB (b) Cu-Nb composite wires as a function of strain,Department of Materials Science & Engineering, Chongqing University,7/23/2019,9,Temperature dependence on the electrial resistivity of Cu-Nb composites,III. Electrical Resistivity,Department of Materials Science & Engineering, Chongqing University,IV. Interface density,7/23/2019,10,Department of Materials Science & Engineering, Chongqing University,V. Changes of niobium ribbons upon annealing,7/23/2019,11,Changes in the morphology of former niobium ribbons upon annealing: (a) fragmentation along longitudinal direction in specimens annealedat 1000 C for 1 h; (b) bamboo structure and thermal grooving at the transverse grain boundaries in niobium (marked by white arrows) due to recrystallization in a CuNb composite annealed at 1050 C for 32 h,Department of Materials Science & Engineering, Chongqing University,VI. Magnetoresistivity,7/23/2019,12,Longitudinal (a) and transverse magnetoresistivity (b) of ADB composi