Simulation of PIM Stainless Steel
Blaine, D. C., & German, R. (2002). Simulation of PIM Stainless Steel. Advances in Powder Metallurgy and Particulate Materials - 2002, Metal Powder Industries Federation, Princeton, NJ. .255-10.26.
The well-known linear-viscous constitutive model for sintering of a porous body is investigated for specific application to the 17-4 PH stainless steel, injection-molded, hydrogen-sintered system. This model is implemented using Abaqus through the CREEP subroutine. Modification of this model to include a Bingham type yield stress is discussed. Due to the multi-phase characteristic of the 17-4 PH sintering system, this model shows that a simple, single-phase, diffusion-based viscosity does not offer enough complexity to simulate the sintering of this material accurately. This model does simulate a single-phase system like nickel well, which leads to the conclusion that further development of viscosity models could lead to a useful model for multi-phase systems.