Title of article :
THEORETICAL AND EXPERIMENTAL EVALUATION OF DISLOCATION DENSITY IN A WORKPIECE AFTER FORMING PROCESS
Author/Authors :
KAZEMINEZHAD, M. sharif university of technology - Department of Materials Science and Engineering, تهران, ايران , KARIMI TAHERI, A. sharif university of technology - Department of Materials Science and Engineering, تهران, ايران , KIET TIEU, A. University ofWollongong - Faculty of Engineering - Department of Mechanical Engineering, Australia
Abstract :
The theoretical calculation of dislocation density in different regions of a deformed workpiece of 99.99% pure copper has been carried out using different procedures consisting of Finite Element Method (FEM) and hardness measurement. To assess the validity of the results pertaining to these procedures, the dislocation density is experimentally measured utilizing the Differential Scanning Calorimetry (DSC). Comparing the predicted and experimental results, it was found that the average error in prediction of the dislocation density by the hardness measurement and FEM is 12% and 2.5%, respectively. Also, for further confirmation of the evaluated dislocation density ofeach region ofthe deformed workpiece, the annealing process was carried out and in the region ofhigher dislocation density, a finer grain size was observed.
Keywords :
Dislocation density , FEM , DSC , Hardness.
Journal title :
Iranian Journal of Materials Science and Engineering
Journal title :
Iranian Journal of Materials Science and Engineering
