Density of Spray-Formed Materials

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Description

Spray Forming is an advanced materials processing technology that transforms molten metal into a near-net-shape solid by depositing atomized droplets onto a substrate. Depending on the application, the spray-formed material may be used in the as-deposited condition or it may undergo post-deposition processing. Regardless, the density of the as-deposited material is an important issue. Porosity is detrimental because it can significantly reduce strength, toughness, hardness and other properties. While it is not feasible to achieve fully-dense material in the as-deposited state, density greater than 99% of theoretical density is possible if the atomization and impact conditions are optimized. Thermal conditions ... continued below

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McHugh, Kevin M.; Uhlenwinkel, Volker & Ellendr, Nils June 1, 2008.

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Spray Forming is an advanced materials processing technology that transforms molten metal into a near-net-shape solid by depositing atomized droplets onto a substrate. Depending on the application, the spray-formed material may be used in the as-deposited condition or it may undergo post-deposition processing. Regardless, the density of the as-deposited material is an important issue. Porosity is detrimental because it can significantly reduce strength, toughness, hardness and other properties. While it is not feasible to achieve fully-dense material in the as-deposited state, density greater than 99% of theoretical density is possible if the atomization and impact conditions are optimized. Thermal conditions at the deposit surface and droplet impact angle are key processing parameters that influence the density of the material. This paper examines the factors that contribute to porosity formation during spray forming and illustrates that very high as-deposited density is achieved by optimizing processing parameters.

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  • 2008 World Congress on Poweder Metallurgy & Particulate Materials,Gaylord National Resort and Conference Center, Washington, DC,06/08/2008,06/12/2008

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  • Report No.: INL/CON-08-14352
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 936620
  • Archival Resource Key: ark:/67531/metadc896842

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  • June 1, 2008

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Oct. 19, 2016, 4:34 p.m.

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McHugh, Kevin M.; Uhlenwinkel, Volker & Ellendr, Nils. Density of Spray-Formed Materials, article, June 1, 2008; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc896842/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.