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Vol.23, No.10, 1116 ~ 1123, 1985
Title
Spheroidization of Eutectiferous Silicon in Al - Si Cast Alloy by Heat Treatment
신택중Taek Joong Shin, 이동녕Dong 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.
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