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기계적 합금화법에 의한 V-Al 합금의 미세조직 변화에 관한 연구
A Study on Microstructure of Vanadium-Aluminum Alloy by Mechanical Alloying
최운 , 김하영 , 남승의 ( Woon Choi , Ha Young Kim , Seoung Eui Nam )
UCI I410-ECN-0102-2009-580-008952771

The formation of brittle intermetallic compound such as VAl₃tends tp lower the toughness of V-Al alloys. Also, due to the high melting point of vanadium, it is difficult to make that alloy by previous ingot metallurgy method. To depress the technique has been adopted. The effect of particle size and milling time on the phase has been thoroughly studied. For mechanical alloying, SPEX mixed /mill has been used. The milling time and the composition of V and Al are varied to find the optimum condition of forming amorphous phase. The X-Ray Diffrection pattern, microstructure detection, microhandess test, experiments are carried out to analyze MA product. When the final step is reached, no lamellar-structure is detected. The steady state condition is observed after 8 hours and 10 hours milling for 15wt.%Al and 30wt.%Al alloy, respectively. The microhardness continuously increases up to 10hours after then it remains constant.

[자료제공 : 네이버학술정보]
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