MAP 로 제조한 고온용 동합금 분산강화재의 특성평가 = Characteristics of dispersoid in high temperture Cu alloy by Mechanical Alloying Process

다국어 초록 (Multilingual Abstract)

The effects of dispersoid on microstructure and mechanical properties of mechanically alloyed and hot-extruded copper were investigated. Copper powders containing 1∼5% Al₂O₃ and TiB₂ as strengthening dispersoids were mechanically alloyed by milling for maximum 1000 minutes in high energy ball mill.
The saturated milling time decreased with increasing dispersoid contents in MA powders. The saturated milling time of MA powders containing Al₂O₃ decreased comparing to that of MA powders containing TiB₂.
In this investigation, MA copper with 5%TiB₂ content showed the superior mechanical properties at room temperature and high temperature to any other hot-extruded MA copper consolidates. This better properties of hot-extruded MA copper consolidates containing 5%TiB₂ seemed to be due to the interface precipitation of Fe-rich phase.