Outline Introduction Processing maps Elements of plastic theory Plastic deformation mechanism Recovery recrystallization
Outline Processing maps Plastic deformation mechanism Elements of plastic theory Recovery & recrystallization Introduction
上清充通大学 SANCEAI JUO TO阳UY Introduction Processing maps 创 General Review Elements of plastic theory Basics for processing maps Computation of processing maps plastic deformation mechanism Recovery recrystallization
Introduction Processing maps 1 1 1 General Review Basics for processing maps Computation of processing maps 1 1 Elements of plastic theory Recovery & recrystallization plastic deformation mechanism
Reference books 上清充通大￥ SHEAMGRAI DUD TONO UHTVEREETTY Hot Working Guide:A Compendium of Processing Maps Y.V.R.K.Prasad and S.Sasidhara ASM International The Materials Information Society Handbook of Workability and Process Design George E.Dieter,S.L.Semiatin October 1st 2003 by ASM International(OH) Institute of Forming Technology Equipment 41
Reference books Institute of Forming Technology & Equipment 4 • Hot Working Guide: A Compendium of Processing Maps Y. V. R. K. Prasad and S. Sasidhara ASM International The Materials Information Society Handbook of Workability and Process Design George E. Dieter, S.L. Semiatin October 1st 2003 by ASM International(OH)
General Review 上产克大睾 SHEAMGRAI DUAD TONO UNTVEEETTY Techniques of mechanical processing Mechanical processing shaping materials into engineering components (dimensional accuracy,specified microstructures and mechanical properties). Techniques of mechanical processing > bulk metal working:using rolling,forging or extrusion (at elevated temperatures);large strains may be imposed in a single step of the operation without the onset of fracture. > cold working:good surface finish,high dimensional tolerance and better strength,smaller strains and require large number of steps with to restore the ductility (sheet metal working cold forging,intermediate annealing impact extrusion,coining,wire and tube drawing) Institute of Forming Technology Equipment
General Review Institute of Forming Technology & Equipment Techniques of mechanical processing 5 Mechanical processing : shaping materials into engineering components (dimensional accuracy, specified microstructures and mechanical properties). Techniques of mechanical processing bulk metal working: using rolling, forging or extrusion (at elevated temperatures) ; large strains may be imposed in a single step of the operation without the onset of fracture. cold working: good surface finish, high dimensional tolerance and better strength, smaller strains and require large number of steps with to restore the ductility (sheet metal working cold forging, intermediate annealing impact extrusion, coining, wire and tube drawing)
General Review 国上清充大半 SHANCBHAI JUAO TONO UNTVEEETTY Bulk metal working ●Bulk metal working: major microstructural changes occur >a influence on the subsequent processing steps large tonnage of material by bulk metal working The objective:manufacture components with controlled microstructure and properties,without macro or microstructural defects. Trial and error techniques expensive,time consuming,and may not always lead to a successful solution or optimization. In recent years,the trial and error techniques are replaced by modeling techniques. Institute of Forming Technology Equipment 6
General Review Institute of Forming Technology & Equipment Bulk metal working 6 Bulk metal working: major microstructural changes occur a influence on the subsequent processing steps large tonnage of material by bulk metal working The objective: manufacture components with controlled microstructure and properties, without macro or microstructural defects. Trial and error techniques : expensive, time consuming, and may not always lead to a successful solution or optimization. In recent years, the trial and error techniques are replaced by modeling techniques