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The Effect of Gas Pressure on Powder Size and Morphology in the Production of AZ91 Powder by Gas Atomization Method

Akkaş, M. ; Çetin, T. ; Boz, M.

Archives of metallurgy and materials, 2018-01, Vol.63 (4), p.1587-1594 [Periódico revisado por pares]

Warsaw: Polish Academy of Sciences

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Título:
The Effect of Gas Pressure on Powder Size and Morphology in the Production of AZ91 Powder by Gas Atomization Method
Autor: Akkaş, M. ; Çetin, T. ; Boz, M.
Assuntos: Acicular powders ; Alloy powders ; Argon ; Atomizing ; az91 alloy powder ; Diameters ; Flakes ; Gas atomization ; Gas pressure ; Gases ; Hardness tests ; Laboratories ; Magnesium alloys ; Magnesium base alloys ; Measuring instruments ; Mechanical properties ; Methods ; Morphology ; Nozzles ; Particle size ; Powder metallurgy ; powder morphology ; Pressure effects ; Scanning electron microscopy ; Stainless steel
É parte de: Archives of metallurgy and materials, 2018-01, Vol.63 (4), p.1587-1594
Descrição: In this study, the effect of gas pressure on the shape and size of the AZ91 alloy powder produced by using the gas atomization method was investigated experimentally. Experiments were carried out at 820°C constant temperature in 2-mm nozzle diameter and by applying 4 different gas pressures (0.5, 1.5, 2.5 and 3.5 MPa). Argon gas was used to atomize the melt. Scanning electron microscope (SEM) to determine the shape of produced AZ91 powders, XRD, XRF and SEM-EDX analysis to determine the phases forming in the internal structures of the produced powders and the percentages of these phases and a laser measuring device for powder size analysis were used. Hardness tests were carried out to determine the mechanical properties of the produced powders. The general appearances of AZ91 alloy powders produced had general appearances of ligament, acicular, droplet, flake and spherical shape, but depending on the increase in gas pressure, the shape of the powders is seen to change mostly towards flake and spherical. It is determined that the finest powder was obtained at 820°C with 2 mm nozzle diameter at 3.5 MPa gas pressure and the powders had complex shapes in general.
Editor: Warsaw: Polish Academy of Sciences
Idioma: Polonês;Inglês

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The Effect of Gas Pressure on Powder Size and Morphology in the Production of AZ91 Powder by Gas Atomization Method

Akkaş, M. ; Çetin, T. ; Boz, M.

Warsaw: Polish Academy of Sciences

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