발간논문

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Vol.23, No.1, 11 ~ 19, 1985
Title
The Phase Change due to Aging in rapidly solidified Al - X alloys
박원욱Won Wook Park, 김동훈Tong 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.
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