Effects of flow forming parameters on plasticity investigated by means of residual stress and texture analysis

D. Tsivoulas, M. Tuffs, J. Quinta Da Fonseca, M. Preuss

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

Abstract

Flow forming is a near net shape manufacturing process for tubular components with variable wall thickness. In order to optimise processing parameters it is important to understand microstructure and residual stress evolution. The present work focuses on understanding the role of four variables, namely the preform hardness, feed rate, thickness reduction, and roller geometry, by means of two characterisation techniques; XRD residual stress measurements employing Mohr's circle analysis, and XRD pole figure measurements for texture analysis. The former technique provides information on plasticity via the calculation of the principal stress, its direction, and the shear stress, while the latter technique aids in understanding the microstructural variations imposed by the chosen parameters and constitutes a complementary characterisation method. The texture results are supported by predictions from a crystal plasticity finite element model.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
Pages1798-1804
Number of pages7
Publication statusPublished - 2013
Externally publishedYes
EventMaterials Science and Technology Conference 2013 - Montreal, Canada
Duration: 27 Oct 201331 Oct 2013

Publication series

NameMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
Volume3

Conference

ConferenceMaterials Science and Technology Conference 2013
Abbreviated titleMS&T 2013
CountryCanada
CityMontreal
Period27/10/1331/10/13

Keywords

  • Flow forming
  • Mohr's circle
  • Residual stresses
  • Texture
  • X-ray diffraction

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