Powder particle-size distribution and heterogeneity of hot-pressed manganese-zinc ferrites

1983 ◽  
Vol 22 (8) ◽  
pp. 667-669
Author(s):  
V. P. Pashchenko ◽  
A. Ya. Andreev ◽  
S. N. Mikharskii ◽  
A. M. Nesterov ◽  
V. V. Ganin ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Powder Particle ◽  
Powder Particle Size ◽  
Manganese Zinc ◽  
Manganese Zinc Ferrites

On the Microstructural Evolution and Porosity Consolidation in 316L Stainless Steel During Hot Isostatic Pressing

2019 ◽  
Author(s):  
Adam J. Cooper ◽  
Olivia C. G. Tuck ◽  
Samuel A. J. Armson ◽  
Michael Preuss
Keyword(s):  
Particle Size ◽  
Stainless Steel ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Powder Particle ◽  
316L Stainless Steel ◽  
Hot Isostatic Pressing ◽  
Nuclear Industry ◽  
Powder Particle Size ◽  
Isostatic Pressing

Abstract If advanced manufacturing technologies are to be adopted over conventional manufacturing processes in the nuclear industry — the most regulatory challenging industry — rigorous fundamental studies that develop underpinning knowledge, materials performance data, and predictive capabilities are essential. Herein we have employed the use of electron backscatter diffraction (EBSD) and 3D X-ray computed tomography (XCT) to characterize microstructure evolution and porosity consolidation during the early stages of powder metallurgy hot isostatic pressing (PM-HIP). The data herein highlight the mechanisms through which the powder particle size distribution encourages localized plastic deformation and subsequent microstructural recrystallization of Type 316L stainless steel; the effect of powder particle size distribution on the rate of porosity consolidation is also discussed. Specifically, we have determined the temperature and pressure conditions that are required to initiate dynamic recrystallization during HIP, and explain how this is influenced by the powder particle size distribution.

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