Abstract
A new HIP process using visco-plastic pressure medium, named "Q-HIP Process", has been developed. In this process, capsulized powder was charged into pressure vessel with a lump of visco-plastic pressure medium, and compacted with a stroke of piston. Compaction in the "Q-HIP Process" was done isostatically as well as that of conventional gas HIP. In this study, three kinds of gas atomized tool steel powders (adamite steel, SKD 11 steel and KHA 30 steel) were completely compacted in a few minutes. Consolidated materials through this process proved to have similar micro-structure, bend strength and tensile properties to that of gas HIP'ed product.
