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Effect of Volumetric Energy Density on Microstructure and Properties of Grade 300 Maraging Steel Fabricated by Laser Powder B...

by Rangasayee Kannan, Frederick A List Iii, Chase B Joslin, Andres E Marquez Rossy, Peeyush Nandwana
Publication Type
Journal Name
Metallurgical and Materials Transactions A
Publication Date
Page Numbers
1062 to 1069

This study investigated the effect of laser powder bed fusion process parameters on the microstructure and properties of maraging steel. The results show that the process parameters can be finetuned to achieve both a high build rate/low hardness and low build rate/high hardness during fabrication, enabling the co-design of components where property gradients are desirable such as an injection molding tool where surface hardness is desired to be higher than the bulk, which needs to have higher fracture toughness.