Physics Behind High Strain Rate Powder Compaction

Abstract

Powder metallurgy (PM) is a part of the manufacturing method in which powder material mixed with a binder, is given a shape of a product by compacting it in a product-shaped die and later sintered to provide it its final strength. This process is known for producing near-net-shaped products at a very high production rate (within seconds), and due to this advantage, it has been extensively used by automobiles and the aerospace industry for part manufacturing. Product properties and rate of production can be further enhanced if the compaction step is done at an extremely high rate as this possesses the potential to create a sintering effect within the compaction step itself. This not only eliminates the need for the sintering step but also yields better properties in the product. With that being known, as with the existence of any phenomenon, there is the physics behind it that govern the whole process, which needs to be investigated to develop a deeper understanding of the process and that further helps to develop a system to control the process and navigate the process to land on properties to our requirements. This paper presents a short compilation of work that will put various perspectives with which researchers have approached it, to solve and contribute to the understanding of it. © 2024 selection and editorial matter Ramesh Kumar, Arbind Prasad and Ashwani Kumar

individual chapters, the contributors.