Dissertation > Excellent graduate degree dissertation topics show

Finite Element Simulation and Application of Equal Channel Angular Extrusion

Author: WangYu
Tutor: LiangWei
School: Taiyuan University of Technology
Course: Materials Science
Keywords: equal channel angular extrusion (ECAE) finite element modeling (FEM) T2-copper aluminum 1100 (Al-1100) Al/C interface
CLC: TG376
Type: Master's thesis
Year: 2006
Downloads: 158
Quote: 3
Read: Download Dissertation

Abstract


In this dissertation, finite element modeling of Equal Channel Angular Extrusion (ECAE) was conducted using the DEFORM-3D code to obtain a better understanding of the plastic deformation behavior of T2-copper and pure aluminum during ECAE in terms of the values and distributions of stress, strain and strain rate. The results are as follows: 1. Friction conditions deeply affect the deformation behavior of the billet during ECAE. Low friction conditions carry out a partial filling, creating a "dead zone" in the outside corner of the die. On the other hand, high friction conditions assure a complete filling of the outside corner, but the "flash" is appeared at the head and the rear of the billet. 2. The variation tendency of effective stress is complied with the following laws: the effective stress curve rapidly reaches a peak point followed by a sudden drop. Afterwards, it rises to the maximum again and keeps for a time, and then falls down gradually. The stress state is compressive in the most part of the deformation zone, but the tensile stress is predicted on the top surface of the billet adjacent to the exit channel of the die,

Related Dissertations

  1. On the Dependency of Grain Refinement Efficiency on Processing Route During Equal Channel Angular Extrusion of Pure Copper,TG379
  2. Research on Numerical Simulation and Experimental Investigation of Aluminum with Porosities during Euqul Channel Angular Extrusion Process,TG376
  3. Study on the Microstructure and Mechanical Properties of Magnesium Alloy by Equal Channel Angular Extrusion,TG113
  4. The Finite Element Simulation and Investigation of Micr-structure and Mechanical Properties of the Pure Aluminum by Equal Channel Angular Extrusion,TG371
  5. Tribological Properties of Ti-Ni Based Alloys Fabricated by Equal Channel Angular Extrusion Processing,TG113.2
  6. Preparation, Microstructure and Mechanical Behaviors of Ultrafine-grained Pure Ti TiNi Alloy,TG146.23
  7. The melt extrusion RP precision analysis and processing,TG376
  8. Numerical Simulation of Equal Channel Angular Extrution of Fine-Grained GCr15 Alloy Material and Tribological Properties Research,TG376.1
  9. Deformation Rule Research on Inner Ring of Cylindrical Roller Bearing in Cold Ring Rolling Process,TG376
  10. Preliminary Study on the Technology of Metal Hot Extrusion Without Discard,TG376.2
  11. Large diameter thick than nickel-based alloy thin-walled tube spinning process of deformation stability study,TG376
  12. Effect of Equal Channel Angular Pressing on Properties of 6061 Al,TG376
  13. Numerical Simulation and Parameters Determined on Pipe End Necking of Hot Spinning,TG376
  14. Research and Application of CAPP for Cold Extrusion Process,TG376
  15. Die Structure and Process Parameters Optimization of Hot Extrusion for Austenitic Stainless Steel Pipes Based on Numerical Simulation,TG376.9
  16. Finite Element Analysis of Rotary Forging in Flanged Sleeve,TG376
  17. Experimental Study on Multipass Equal Channel Angular Pressing of Pure Al Sintered Material,TG376
  18. Iron base superalloy Fe13CrWTiY hot extrusion and the microstructure evolution,TG376.2
  19. The Crankshaft Parametrical Model Technique and Intensity and Study of Residual Deforming in Rolling,TG376
  20. Development of the Plastic and Precise Processing Machine for Surface,TG376
  21. Development of the Rolling Plastic Precise Machine,TG376
  22. The Principle and Application of Ultrasonic Range Finding on the Large-Scale Electrode Formed,TG376

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Extrusion > Extrusion process
© 2012 www.DissertationTopic.Net  Mobile