Abstract
Characteristics of compactions of Cu 60 mass%-Zn 40mass% brass (60Cu-40Zn) chips and their extruded materials were investigated. 60Cu-40Zn chips were consolidated by cold compaction (C.C), compaction and sintering (C.S), and spark plasma sintering (SPS). Relative density of C.C billet, C.S billet, and SPS billet were 77.3 %, 98.6% and 99.6 %, respectively. In the case of C.C billet heat treated at 973 K, there were zinc oxides at primary particle boundaries by zinc evaporation during heat treatment. The elongation of the extruded material used C.C billet was the lowest in this experimental materials. There were many cracks in the C.C billets extrusion because of pure particles bonding by zinc oxide. In the case of C.S and SPS billet extrusions, good primary particle bonding were occurred. High density billet for reducing zinc vaporization was needed to make a P/M extruded brass with suitable ductility.
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