Influence of Size Distribution and Particle Interaction on the Packing Behavior of 316L Stainless Steel Powder

전종규,; Woo, Soobin; No, Kookil; Lee, Yeonjoo; Yang, Dong‐Yeol; Choi, Hyunjoo

doi:10.3365/kjmm.2016.54.5.322

Cited by 3 publications

(1 citation statement)

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“…The alloy powder was spherical, but satellites were observed on the surface because the surface roughness of the powder increased with increasing powder size during the water atomisation process. The cooling rate of the capacity decreased as the heat transfer coefficient decreased with increasing powder size [22,23]. Therefore, relatively small-sized powders condensed on the surface of large powders during atomisation.…”

Section: Resultsmentioning

confidence: 99%

Effect of multiple oxides on the mechanical properties of CoCrFeMnNi high-entropy alloy matrix composites

et al. 2021

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This study investigates the oxide formation behaviour and mechanical properties of oxidedispersion-strengthened (ODS) CoCrFeMnNi high-entropy alloy (HEA) matrix composites produced via powder metallurgy. Grain boundary strengthening, solid solution hardening, and precipitation hardening were controlled by varying the duration of mechanical milling and heat treatment durations. The grain size decreased significantly upon milling and it increased to the range of hundreds of nanometres with the heat treatment. Although ex situ-added Y 2 O 3 nanoparticles were uniformly dispersed in the HEA matrix regardless of the milling duration and heat treatment time, different types of in situ oxides, such as Cr-and Mn-oxides, were formed during the heat treatment. Longer milling times led to more crystal defects (e.g. grain boundaries and dislocations) and stored energy in the HEA matrix, thereby stimulating second phase precipitation and oxide formation. Under optimal conditions, the ODS-HEA composites exhibited a good balance between yield strength and elongation in compression.

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Section: Resultsmentioning

confidence: 99%

Effect of multiple oxides on the mechanical properties of CoCrFeMnNi high-entropy alloy matrix composites

et al. 2021

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Effects of particle size and forming pressure on pore properties of Fe-Cr-Al porous metal by pressureless sintering

Koo

Lee

et al. 2017

Met. Mater. Int.

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Computational approach to increasing the packing fraction of amorphous powders

et al. 2021

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The powder packing behaviour of Fe-based amorphous powders was experimentally monitored and compared with values predicted using the Desmond model and a simulation based on the discrete element method. Powders with different sizes were mixed in various ratios to produce a tri-modal distribution. The simulation results revealed the cohesive force of the powder in terms of the angle of repose and were in agreement with the experimental results. However, the packing behaviour derived from the theoretical model deviated from the experimental results because the interaction among the powder was not considered in the former. Furthermore, the packing fractions for different mixing ratios were investigated through an artificial intelligence framework to determine the optimal mixing ratio. This ratio was validated experimentally and determined to be approximately 8.97% higher than that for the monodisperse large powder case.

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Influence of Size Distribution and Particle Interaction on the Packing Behavior of 316L Stainless Steel Powder

Cited by 3 publications

References 0 publications

Effect of multiple oxides on the mechanical properties of CoCrFeMnNi high-entropy alloy matrix composites

Effect of multiple oxides on the mechanical properties of CoCrFeMnNi high-entropy alloy matrix composites

Effects of particle size and forming pressure on pore properties of Fe-Cr-Al porous metal by pressureless sintering

Computational approach to increasing the packing fraction of amorphous powders

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