• Khan, R. H. U.
• Attallah, Moataz Moataz
• Sergi, A.

Abstract

<p>Near net shape powder metallurgy hot isostatic pressing (NNS PM HIP), is becoming a widely recognised manufacturing process due to its capability of producing fully dense complex parts with isotropic mechanical properties. Pre-alloyed metal powders produced by various powder production methods can greatly affect microstructure and the mechanical properties of NNS PM HIP parts. In this work, HIP response of IN625 powders produced by four different atomisation methods ie water atomised, nitrogen gas atomised, argon gas atomised and plasma atomised, were assessed. Powders were fully characterised to assess their chemical composition, flowability, apparent, tap &amp; packing densities, particle size distribution and surface morphology. All four IN625 powders were HIPed to assess their microstructure and the mechanical properties to down select the best powder for NNS PM HIP parts manufacturing.</p>

Topics

• impedance spectroscopy
• microstructure
• surface
• Nitrogen
• chemical composition
• isotropic
• hot isostatic pressing