TY - GEN
T1 - Effects of High-Speed Mixing on the Properties of Sintered F-0008 and FN-0208 PM Parts
AU - Bressler, Cole
AU - Carns, Devin
AU - Waryoba, Daudi
N1 - Publisher Copyright:
© 2022 Advances in Powder Metallurgy and Particulate Materials
PY - 2022
Y1 - 2022
N2 - Two variants of iron-based powders, F-0008 and FN-0208 were used to study the effects of high-speed mixing on the physical and mechanical properties of sintered parts. The results were compared to traditional tumbler-mixed powders. The high-speed mixed powders showed reduction in the particle sizes and improvements in properties such as flow rate, apparent density, porosity, and TRS strength. High speed mixing was done at 2,500 rpm for 30 seconds and 19,000 rpm for 30 seconds. After mixing, the powders were compacted to a density of 6.7 g/cm3 and sintered at 1135 °C (2075 °F) in a 90% N2 + 10% H2 atmosphere. Results show appreciable improvement in the transverse rupture strength (TRS) of high-speed mixed parts. FN-0208, in particular, showed a 6% increase in TRS compared to conventional mixed parts. This suggests that the increase in the strength of high-speed mixed FN-0208 is due to co-deformation between nickel and iron powders during high-speed mixing. This results to particle fragmentation and local deformation which enhances diffusion and improves mechanical properties.
AB - Two variants of iron-based powders, F-0008 and FN-0208 were used to study the effects of high-speed mixing on the physical and mechanical properties of sintered parts. The results were compared to traditional tumbler-mixed powders. The high-speed mixed powders showed reduction in the particle sizes and improvements in properties such as flow rate, apparent density, porosity, and TRS strength. High speed mixing was done at 2,500 rpm for 30 seconds and 19,000 rpm for 30 seconds. After mixing, the powders were compacted to a density of 6.7 g/cm3 and sintered at 1135 °C (2075 °F) in a 90% N2 + 10% H2 atmosphere. Results show appreciable improvement in the transverse rupture strength (TRS) of high-speed mixed parts. FN-0208, in particular, showed a 6% increase in TRS compared to conventional mixed parts. This suggests that the increase in the strength of high-speed mixed FN-0208 is due to co-deformation between nickel and iron powders during high-speed mixing. This results to particle fragmentation and local deformation which enhances diffusion and improves mechanical properties.
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M3 - Conference contribution
AN - SCOPUS:85184086044
T3 - Advances in Powder Metallurgy and Particulate Materials - 2022: Proceedings of the 2022 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2022
SP - 526
EP - 532
BT - Advances in Powder Metallurgy and Particulate Materials - 2022
PB - Metal Powder Industries Federation
T2 - 2022 International Conference on Powder Metallurgy and Particulate Materials, PowderMet 2022
Y2 - 12 June 2022 through 15 June 2022
ER -