| Title |
The Phase Change due to Aging in rapidly solidified Al - X alloys |
| Authors |
박원욱(Won Wook Park); 김동훈(Tong Hoon Kim) |
| Abstract |
A study has been made on the change of hardness, lattice parameter and thermal stability in Al-X (X＝Ti, Zr, V) alloys which were produced by the Atomization-Splat Quenching method. Analysis of diffraction pattern was performed by computer for aging mechanism. In Al-Zr alloy, aging peak is obtained at 400℃ for 1 hour in the Vickers hardness test. Coherent metastable phases are detected by the TEM analysis during aging treatment. For Al-Ti alloy, it is found that the metastable structure is tetragonal (a＝12.4-12.6 A, c＝13.7-14.3A). When the alloys are heat-treated at 400℃ for 100 hours, the morphologies of precipitates are different each other. |