발간논문

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Vol.23, No.6, 611 ~ 619, 1985
Title
The Phase Change by Aging in Rapidly Solidified Al - Zr Alloy and the Effects of the Third Additional Components ( Ti , Cr , V )
한상현Sang Hyun Han, 김동훈Tong Hoon Kim
Abstract
A study has been made of the effects of aging treatment and the third additional elements (Ti, Cr, V) on the phase change in the Al-Zr alloy splats produced by Atomizing-Splat Quenching method. In the Al-Zr alloy aged for 1 hour, discontinuous precipitation occurred from grain boundaries at 350℃, microhardness decreased rapidly above 400℃ and coarser plate-like Al₃Zr appeared at 500℃. Al-Zr-Cr and Al-Zr-V alloys showed an aging peak at 450℃ and Al-Zr-Ti alloy at 400℃. Al-Zr-Cr alloy had the highest peak hardness and Al-Zr-V alloy showed the best thermal stability.
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