Damage evolution in polycrystalline titanium

C. Efstathiou, J. Carroll, H. Sehitoglu, J. Lambros, B. Hauber, M. Spottswood, R. Chona

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Full-field strain measurements within and around a particular grain in polycrystalline pure titanium were made on a sample subjected to incremental tensile loading. Using digital image correlation, we measured the plastic strain distribution after progressively applying a plastic strain of 0.25%, 0.5%, 1.75% and, 4%. The full-field strain measurements reveal a uniform strain distribution up to an overall plastic strain of 0.5%. For larger applied strains, the measurements indicate that grain boundaries sustained significantly lager deformations than the grain interior. Additionally, plastic strains were found largest along grain boundary regions perpendicular to the loading axis. Post deformation optical microscopy reveals the presence of surface micro-cracks responsible for the deformation localization along the grain boundaries.

Original languageEnglish (US)
Title of host publicationSociety for Experimental Mechanics - 11th International Congress and Exhibition on Experimental and Applied Mechanics 2008
Pages159-162
Number of pages4
StatePublished - 2008
Event11th International Congress and Exhibition on Experimental and Applied Mechanics 2008 - Orlando, FL, United States
Duration: Jun 2 2008Jun 5 2008

Publication series

NameSociety for Experimental Mechanics - 11th International Congress and Exhibition on Experimental and Applied Mechanics 2008
Volume1

Other

Other11th International Congress and Exhibition on Experimental and Applied Mechanics 2008
Country/TerritoryUnited States
CityOrlando, FL
Period6/2/086/5/08

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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