Introduction to Recycled Powders

What is/are Recycled Powders?

Recycled Powders - Two biomedical Tibia implants have been 3D printed from virgin and 3-5 times recycled powders of stainless steel 316L. ^[1] The results of mechanical tests set: short-term tensile and long-term strength, low-cycle fatigue of synthesized samples of VZh159 nickel-based superalloy with comparison of the structure studies results by TEM and X-ray energy dispersion microanalysys methods are analyzed for reasonable choice of the assessing criterion for the material structure degradation in the SLM process with increase in the construction platform loading density and the recycled powders involvement. ^[2] The single-point Brunauer–Emmet–Teller (BET) specific surface area of several recycled powders (synthesized from rejected scrap fuel pellets) was determined and compared with as-received and standard specified powders. ^[3] In this study, the microstructure and mechanical properties of a nickel-based superalloy fabricated by laser powder-bed fusion (LPBF) using recycled powders were investigated. ^[4] There are few comprehensive studies on the microstructure and mechanical properties of SLM-produced parts using recycled powders, especially for maraging steels. ^[5] The first step in reusing the recycled powders in the 3D printing process is to characterize the microstructure and surface quality of the powder for oxidation and impurity analysis. ^[6] The possibility to reduce costs of the additive manufacturing (AM) technologies by using recycled powders is still an open question. ^[7] 4:1, which has the highest efficiency of recycled powders (91. ^[8] A detailed characterization and comparison of the feedstock and recycled powders is essential in order to understand the number of times a powder can be recycled. ^[9] On the other hand, flowing properties are similar among the two virgin and recycled powders, with only a significant change in the fraction of fines for SLS material. ^[10] Lastly, the effect of using fresh or recycled powders, on the microstructure and mechanical properties of DED 316L stainless steel parts is investigated. ^[11] Reusing the recycled powders can significantly reduce the powder consumption, production cost and time. ^[12]