EQUAL CHANNEL ANGULAR EXTRUSION (ECAE) OF BERYLLIUM.

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Description

The Equal Channel Angular Extrusion (ECAE) technique has been applied to a P/M source Be alloy. Single and two-pass extrusions have been successfully completed, using two different processing routes, on Ni-canned billets of Be at 400 C. No cracking was observed in the billet and significant grain refinement was achieved. In this paper, microstructural features and dislocation structures are discussed for the single-pass material, including evidence of <c> and <c+a> dislocations. Significant crystallographic texture developed during ECAE, which will be discussed in terms of this unique deformation processing technique and the underlying physical processes which sustained the deformation.

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14 p.

Creation Information

Field, R. D. (Richard D.); Hartwig, K. T.; Necker, C. T. (Carl T.); Bingert, J. F. (John F.) & Agnew, S. R. (Sean R.) January 1, 2001.

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Description

The Equal Channel Angular Extrusion (ECAE) technique has been applied to a P/M source Be alloy. Single and two-pass extrusions have been successfully completed, using two different processing routes, on Ni-canned billets of Be at 400 C. No cracking was observed in the billet and significant grain refinement was achieved. In this paper, microstructural features and dislocation structures are discussed for the single-pass material, including evidence of <c> and <c+a> dislocations. Significant crystallographic texture developed during ECAE, which will be discussed in terms of this unique deformation processing technique and the underlying physical processes which sustained the deformation.

Physical Description

14 p.

Source

  • Submitted to: Metallurgical and Materials Transactions A (proceedings of the "Defects, Properties and Mechanical Behavior of HCP Metals and Alloys" Symposium, TMS 2001 Annual Meeting)

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  • Report No.: LA-UR-01-2514
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975320
  • Archival Resource Key: ark:/67531/metadc931465

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 5:53 p.m.

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Field, R. D. (Richard D.); Hartwig, K. T.; Necker, C. T. (Carl T.); Bingert, J. F. (John F.) & Agnew, S. R. (Sean R.). EQUAL CHANNEL ANGULAR EXTRUSION (ECAE) OF BERYLLIUM., article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc931465/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.