pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (22권4호 160-166)
Structure and Properties of Fe-29Ni-17Co Alloy Manufactured by Air Induction Melting and Electro-Slag Remelting
AIM 및 ESR 법에 의해 제조한 Fe-29Ni-17Co 합금의 조직 및 성질
Jeong-Keun Lee, Moon-Hyun Kim, Dae-Heon Joo, Myung-Ho Kim
The structure and properties of Fe-29Ni-17Co alloy which had been melted using induction furnace in air atmosphere and than electroslag-remelted were investigated. The oxygen content was reduced to 0.03% when the ingot was refined from 0.09~0.12% of that air melted. The amounts of spheroidal oxides inclusions and gas porosities of ingot were markedly reduced by the ESR process. CTE of ESR ingot contained small amount of oxides and porosities was found to be lower than that of AIM ingot, and tensile properties of ESR ingot and plate were found to be superior than that of AIM ingot and plate.
Fe-29Ni-l7Co Alloy, KOVAR, Electro-Slag Remelting, CTE