Microstructure Evolution During Spray Rolling and Heat Treatment of 2124 Al

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Spray rolling is a strip casting technology that combines elements of spray forming and twin-roll casting. It consists of atomizing molten metal with a high velocity inert gas, quenching the resultant droplets in flight, and directing the spray between mill rolls. In-flight convection heat transfer from atomized droplets and conduction heat transfer at the rolls rapidly move an alloy’s latent heat. Hot deformation of the semi-solid material in the rolls results in fully consolidated, rapidly-solidified product. While similar in many ways to twin-roll casting, spray rolling is able to process a broader range of alloys and operates at a higher ... continued below

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McHugh, K.M.; Lin, Y.; Zhou, Y.; Johnson, S.B.; Delplanque, J.P. & Lavernia, E.J. September 1, 2006.

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Spray rolling is a strip casting technology that combines elements of spray forming and twin-roll casting. It consists of atomizing molten metal with a high velocity inert gas, quenching the resultant droplets in flight, and directing the spray between mill rolls. In-flight convection heat transfer from atomized droplets and conduction heat transfer at the rolls rapidly move an alloy’s latent heat. Hot deformation of the semi-solid material in the rolls results in fully consolidated, rapidly-solidified product. While similar in many ways to twin-roll casting, spray rolling is able to process a broader range of alloys and operates at a higher production rate. A laboratory-scale strip caster has been constructed at INL and used to evaluate the interplay of processing parameters and strip quality while producing strips up to 200 mm wide and 1.6 – 6.4 mm thick. Plans are underway to scale to 600 mm width and demonstrate steady-state operation. As-spray-rolled strip is characterized by a flat, uniformly thick profile with minimal porosity or segregation. This paper examines how processing parameters influence the microstructure transformations that take place during spray rolling and post-deposition heat treatment of 2124 Al.

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  • 3rd International Conference on Spray Deposition and Melt Atomization and 6th International Conferen,Bremen, Germany,09/04/2006,09/06/2006

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  • Report No.: INL/CON-06-11193
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 911655
  • Archival Resource Key: ark:/67531/metadc889798

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 1, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 15, 2016, 3:11 p.m.

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McHugh, K.M.; Lin, Y.; Zhou, Y.; Johnson, S.B.; Delplanque, J.P. & Lavernia, E.J. Microstructure Evolution During Spray Rolling and Heat Treatment of 2124 Al, article, September 1, 2006; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc889798/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.