| Title |
Solute Segregation and Precipitation Structure in Al - Mg - Si alloy with Small Amounts of Chromium and Titanium |
| Authors |
최정철(Jeong Cheol Choe); 수총 유강(Hiroyasu Tezuka); 신미 창언(Akihiko Kamio); 고교 항부(tsuneo Takahashi); 류성곤(Sung Kon Yu) |
| Abstract |
In Al-1.1wt%Mg-0.68wt%Si alloy the effect of Cr and Ti additions on precipitation behavior of the homogenized and/or aged specimens has been investigated homogenizing. Ephase(Al, Mg, Cr₂) is preferentially precipitated around Mg₂Si and distributed unevenly near a cored dendrite structure. With the addition of Cr and Ti the aged microstructure has indicated that the coarsening of needle-shaped G. P. zone and rod-shaped intermediate phase(β`) is delayed, and transition from needle-shaped G. P. zone to β` phase is, thus, delayed. This in turn, caused deceleration of the hardness decrease rate during overaging. |