As part of the PEPS project, we attended the annual powder metallurgy congress (EPMA 2022) which took place from October 9 to 13, 2022 in Lyon.
During the conference, various powder metallurgy themes were discussed, in particular additive metal manufacturing as well as PIM and PIM-like processes.
The latest advances on the PIM-Like process have shown that the presence of porosity during the shaping step by 3D printing is necessary to avoid the formation of stresses and defects inside the part during the thermal debinding [1]. Other studies [2,3] have shown that the sintering atmosphere can influence the quality of the final part and its properties.
It turns out that all the steps of the PIM-like process need to be optimized in order to obtain 100% metal parts without defects.
[1] : Charpentier Nicolas, Development and optimisation of a PLA bio-based feedstock for PIM-like extrusion based additive manufacturing (EAM) of tool steel alloy
[2] : Jordan Lacorne, Influence of debinding/sintering atmosphere on themicrostructure and the mechanical properties of sintering parts.
[3] : TsukasaShirafuji, Effect of Crack Initiation Size and Residual Stress on Bending Fatigue Strength of Sintered Pre-Alloyed Steel