발간논문

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Vol.40, No.2, 129 ~ 135, 2002
Title
( Transformations : Effect of Mn Addition on the Lattice Relation Between CuAl₂ Intermetallic Compound and Al Matrix )
김경현Kyung Hyun Kim,한승전Seung Zeon Han,안용섭Yong Sub Ahn,김인배In Bae Kim
Abstract
Effects of Mn addition on lattice relation and microstructure in monolithic CuAl_2 and Al-50 wt%CuAl_2 alloys were investigated. The AlCuMn compound was produced with increasing the contents of Mn above 2 wt% in both CuAl_2 intermetallic compound and Al-50 wt%CuAl_2 alloys. Not only the lattice parameter of monolithic CuAl_2 intermetallic compound and but also that of matrix and second phase in Al-50 wt%CuAl_2 alloy were also decreased with increasing Mn content. For the analysis of the lattice relation of matrix and precipitated particles in Al-Cu alloys, simple lattice matching model in Al-Cu alloy was established. According to lattice matching model, the degree of lattice mismatch between Al matrix and CuAl_2 second phase were decreased remarkably with addition of 0.5 wt%Mn.
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