Loading...

Simulation of Solidification and Microstructure of Ductile Cast Iron

Vasfpour, Rahim | 2011

689 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41887 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Davami, Parviz; Varahram, Naser
  7. Abstract:
  8. In this research, solidification and microstructure of ductile cast iron was simulated using Fourier heat transfer equation. Using Fourier heat transfer equation, distribution of macroscopic temperature with heat transfer coefficient was obtained. The purpose of simulation, forecasting ductile iron microstructure, including grain size, number per unit volume of graphite (NC), microstructure including volume fractions of ferrite and pearlite and graphite phases. Knowing the phases of the microstructure and nodule count and the use of empirical relationships, we can estimate mechanical properties. In this regard, all transformations during cooling of molten ductile iron was simulated. Results of the simulation program includes determining the number of graphite nodules and volume per unit area, the percentage of phases and determination of mechanical properties. To evaluate the accuracy of the simulation results chromel and alomel thermocouple and and analog to digital (A To D) data conversion system for cooling steps were used and sections at the tip of thermocouples cut for metallographic samples and compared with simulation results. This study showed simulation results with experimental test results are in satisfactory agreement
  9. Keywords:
  10. Ductile Cast Iron ; Nodule Count ; Solidification Simulation ; Microstructure Simulation

 Digital Object List

 Bookmark

No TOC