Microstructural Evolution in the 2219 Aluminum Alloy During Severe Plastic Deformation

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Numerous investigations have demonstrated that intense plastic deformation is an attractive procedure for producing an ultrafine grain size in metallic materials. Torsional deformation under high pressure and equal-channel angular extrusion are two techniques that can produce microstructures with grain sizes in the submicrometer and nanometer range. Materials with these microstructures have many attractive properties. The microstructures formed by these two processing techniques are essentially the same and thus the processes occurring during deformation should be the same. Most previous studies have examined the final microstructures produced as a result of severe plastic deformation and the resulting properties. Only a limited ... continued below

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2,900 Kilobytes pages

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Kaibyshev, R.O.; Safarov, I.M. & Lesuen, D.R. March 29, 2000.

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Description

Numerous investigations have demonstrated that intense plastic deformation is an attractive procedure for producing an ultrafine grain size in metallic materials. Torsional deformation under high pressure and equal-channel angular extrusion are two techniques that can produce microstructures with grain sizes in the submicrometer and nanometer range. Materials with these microstructures have many attractive properties. The microstructures formed by these two processing techniques are essentially the same and thus the processes occurring during deformation should be the same. Most previous studies have examined the final microstructures produced as a result of severe plastic deformation and the resulting properties. Only a limited number of studies have examined the evolution of microstructure. As a result, some important aspects of ultra-fine grain formation during severe plastic deformation remain unknown. There is also limited data on the influence of the initial state of the material on the microstructural evolution and mechanisms of ultra-fine grain formation. This limited knowledge base makes optimization of processing routes difficult and retards commercial application of these techniques. The objective of the present work is to examine the microstructure evolution during severe plastic deformation of a 2219 aluminum alloy. Specific attention is given to the mechanism of ultrafine grain formation as a result of severe plastic deformation.

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2,900 Kilobytes pages

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  • Other Information: PBD: 29 Mar 2000

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  • Report No.: UCRL-ID-138466
  • Grant Number: W-7405-Eng-48
  • DOI: 10.2172/792652 | External Link
  • Office of Scientific & Technical Information Report Number: 792652
  • Archival Resource Key: ark:/67531/metadc742112

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • March 29, 2000

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  • Oct. 19, 2015, 7:39 p.m.

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  • May 6, 2016, 1:38 p.m.

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Kaibyshev, R.O.; Safarov, I.M. & Lesuen, D.R. Microstructural Evolution in the 2219 Aluminum Alloy During Severe Plastic Deformation, report, March 29, 2000; California. (digital.library.unt.edu/ark:/67531/metadc742112/: accessed July 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.