| Title |
Spheroidization of Eutectiferous Silicon in Al - Si Cast Alloy by Heat Treatment |
| Authors |
신택중(Taek Joong Shin); 이동녕(Dong Nyung Lee) |
| Abstract |
A study has been made of spheroidization of eutectiferous silicon in the aluminum-silicon cast alloy. AC4C, by annealing under various conditions The spheroidzation could not be achieved by annealing for 27 hours below 400℃, whereas it was achieved relatively easily at temperatures above 500℃. Coarsening of the spheroidized silicon particles was controlled by diffusion. The tensile strength of the specimens increased when annealed at 500 and 550℃ and decreased when annealed at 350 to 450℃, whereas the elongation of all the specimens increased with annealing time. |