| Title |
A Study on the Effect of P on Modification of Eutectic Si in Al-7wt%Si-0.3wt%Mg Alloy |
| Authors |
권일수(Il Soo Kwon); 김정호(Jeong Ho Kim); 김경민(Kyoung Min Kim); 윤의박(Eui Pak Yoon) |
| Keywords |
Al-7wt% Si-0.3wt% Mg; Eutectic Si; Sr Modification; P. UTS |
| Abstract |
In this study, the influence of impurity element P on modification of eutectic Si with Sr addition was examined by the observation of microstructures, DSC thermal analysis, tension test and fractographs observation. When the content of P was 1.3ppm, the eutectic morphology was the fine neeldle phase. In case of P 17.5ppm, eutectic Si appeared coarse flake phase. The increase of P in the melt deteriorated modification of eutectic Si and ascended eutectic temperature. UTS and elongation decreased with the increase of P content. |