Al-Fe-Ni 공정복합합금의 응고속도에 따른 전기저항의 변화 = Changes of electrical resistivity according to cooling rate in Al-Fe-Ni eutectic composite alloy

다국어 초록 (Multilingual Abstract)

Numerous researchs have been investigated concerning the mechanism of unidirectionally solidification and the relationships between microstructure and growth rate in eutectic alloys.
Although it is expected that the anisotropic microstructure associated with eutectic should produced the interesting electrical properties, almost all studies on eutectic composite alloy have been investigated about morphology, mechanical properties and thermal stability.
In the present study, changes of electrical resistivity according to cooling rate in Al-Fe-Ni eutectic composite alloy is investigated.
The obtained results are as follows;
As cooling rate(R) increased, electrical resistivity of Al-Fe-Ni eutectic composite alloy at 520℃ increased with increaseing of fineness of eutectic fibers and formation of cellular structure. The higher the cooling rate, the higher the temperature dependence of electrical resistivity and the lower the stability of eutectic composite alloy, respectively.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 실험방법
• 1. 시료제작
• 2. 조직관찰
• 3. 전기저항측정
• Ⅲ. 실험결과 및 고찰
• 1. 응고속도에 따른 조직의 변화
• 2. 응고속도에 따른 전기저항의 변화
• Ⅳ. 결론