Microstrain accumulation in multiphase superalloys

J. Repper, M. Hofmann, C. Krempaszky, R. C. Wimpory, W. Petry, E. Werner

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Four matrix-phase crystallographic directions of IN718 are investigated by in situ tensile tests using neutron diffraction. The elastic diffraction constants for all directions measured are compared to theoretical values calculated by the Kröner model. The differences between the microscopic and the macroscopic material response are given. The accumulation of microstrains in the different crystallographic directions is discussed. A comparison between the results of a single phase material (ingot IN718) and two differently thermal treated multiphase materials is presented.

Original languageEnglish
Pages (from-to)S65-S67
JournalPowder Diffraction
Volume24
Issue numberSUPPL. 1
DOIs
StatePublished - 2009

Keywords

  • IN718
  • Intergranular microstrains
  • Multiphase alloy
  • Neutron diffraction
  • Residual stresses

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