Abstract
Experimental investigations were undertaken in order to understand the mechanism of deformation and densification behaviour during cold upset forming operation on sintered Cu-5%W nano composite. High-energy mechanical milling was used to produce Cu and W Nano powder composites. Cylindrical preforms with initial theoretical density of 85% possessing three different aspect ratios of 0.40, 0.60 and 0.80 were prepared using a die and punch assembly with a hydraulic press. The preforms were sintered in an electric muffle furnace at 650¡C, and subsequently furnace cooled. Cold deformation experiments were conducted in incremental deformation steps. The relationships between various parameters are evaluated.
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