Load partitioning between single bulk grains in a two-phase duplex stainless steel during tensile loading

Peter Hedström, Tong Seok Han, Ulrich Lienert, Jonathan Almer, Magnus Odén

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The lattice strain tensor evolution for single bulk grains of austenite and ferrite in a duplex stainless steel during tensile loading to 0.02 applied strain has been investigated using in situ high-energy X-ray measurements and finite-element modeling. Single-grain X-ray diffraction lattice strain data for the eight austenite and seven ferrite grains measured show a large variation of residual lattice strains, which evolves upon deformation to the point where some grains with comparable crystallographic orientations have lattice strains different by 1.5 × 10-3, corresponding to a stress of ∼300 MPa. The finite-element simulations of the 15 measured grains in three different spatial arrangements confirmed the complex deformation constraint and importance of local grain environment.

Original languageEnglish
Pages (from-to)734-744
Number of pages11
JournalActa Materialia
Volume58
Issue number2
DOIs
Publication statusPublished - 2010 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Fingerprint Dive into the research topics of 'Load partitioning between single bulk grains in a two-phase duplex stainless steel during tensile loading'. Together they form a unique fingerprint.

  • Cite this