Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy

K. I. Johnson, M. A. Khaleel, C. A. Lavender, S. G. Pitman, J. T. Smith, M. T. Smith, C. H. Hamilton

Research output: Chapter in Book/Report/Conference proceedingChapter

8 Citations (Scopus)

Abstract

The relationship of force versus cross-head travel for a carefully defined displacement history is commonly used in uniaxial tension tests to evaluate rate sensitive properties of superplastic alloys. The underlying objective is to maintain the strain-rate constant throughout the gauge section of the test specimen. However, finite element simulations of common superplastic tensile specimens predict that actual strain-rates may vary as much as 40% from the uniform value. This trend was experimentally confirmed for a 5083 aluminum alloy by performing a series of interrupted tensile tests. A correlation between experimental and finite element results was made and an improved specimen geometry is presented for uniaxial tests.

Original languageEnglish
Title of host publicationMaterials Science Forum
EditorsTerence G. Laungdon
PublisherTrans Tech Publ
Pages627-632
Number of pages6
Volume170-172
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the 1994 International Conference on Superplasticity in Advanced Materials (ICSAM-94) - Moscow, Russia
Duration: 24 May 199426 May 1994

Other

OtherProceedings of the 1994 International Conference on Superplasticity in Advanced Materials (ICSAM-94)
CityMoscow, Russia
Period24/5/9426/5/94

Fingerprint

Strain rate
Aluminum alloys
Geometry
Gages
Rate constants

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Johnson, K. I., Khaleel, M. A., Lavender, C. A., Pitman, S. G., Smith, J. T., Smith, M. T., & Hamilton, C. H. (1994). Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy. In T. G. Laungdon (Ed.), Materials Science Forum (Vol. 170-172, pp. 627-632). Trans Tech Publ.

Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy. / Johnson, K. I.; Khaleel, M. A.; Lavender, C. A.; Pitman, S. G.; Smith, J. T.; Smith, M. T.; Hamilton, C. H.

Materials Science Forum. ed. / Terence G. Laungdon. Vol. 170-172 Trans Tech Publ, 1994. p. 627-632.

Research output: Chapter in Book/Report/Conference proceedingChapter

Johnson, KI, Khaleel, MA, Lavender, CA, Pitman, SG, Smith, JT, Smith, MT & Hamilton, CH 1994, Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy. in TG Laungdon (ed.), Materials Science Forum. vol. 170-172, Trans Tech Publ, pp. 627-632, Proceedings of the 1994 International Conference on Superplasticity in Advanced Materials (ICSAM-94), Moscow, Russia, 24/5/94.
Johnson KI, Khaleel MA, Lavender CA, Pitman SG, Smith JT, Smith MT et al. Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy. In Laungdon TG, editor, Materials Science Forum. Vol. 170-172. Trans Tech Publ. 1994. p. 627-632
Johnson, K. I. ; Khaleel, M. A. ; Lavender, C. A. ; Pitman, S. G. ; Smith, J. T. ; Smith, M. T. ; Hamilton, C. H. / Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy. Materials Science Forum. editor / Terence G. Laungdon. Vol. 170-172 Trans Tech Publ, 1994. pp. 627-632
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