In situ analysis of cast irons mechanical behaviour using synchrotron x-ray tomography and 3DXRD

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

When subjecting cast irons to mechanical loading the deformation and damage mechanisms occur on a microstructural level and are dependent on the inherent microstructure. A deeper understanding of the relation between the different microstructural constituents and the macroscopic mechanical behaviour would be beneficial in material development efforts and for the ability to design and cast components with tailored properties. Traditionally, microscopy examinations on sectioned cast iron samples have been used when analysing the microstructure in cast irons. Since all microstructural heterogeneity is in three-dimensions (3D), methods that provide a three-dimensional characterisation are essential for a deeper understanding of, both the microstructural features as well as the deformation and damage of cast irons. Therefore, different cast iron grades have been studied using synchrotron X-ray tomography and 3D x-ray diffraction (3DXRD) at ESRF in Grenoble, France. The samples were stepwise loaded and unloaded in-situ at in the tomography/3DXRD set-up to study the deformation with regard to microstructural constituents and the microstructural evolution in 3D. Based on the 3D tomography image sequences, digital volume correlation (DVC) was used for full strain field analysis and for the analysis of damage and deformation mechanisms. In addition, 3DXRD data were analysed to provide details on the lattice parameters and lattice strain of individual ferrite grains. This work shows the possibilities of such synchrotron experiments for advanced study of the mechanical behaviour of cast iron.

Details

Authors
  • T. Sjögren
  • S. Hall
  • L. Elmquist
  • E. Dartfeldt
  • E. Larsson
  • M. Majkut
  • J. Elfsberg
  • P. Skoglund
  • J. Engqvist
Organisations
External organisations
  • Research Institutes of Sweden (RISE)
  • European Synchrotron Radiation Facility
  • Scania CV AB
  • Xylem Water Solutions Manufacturing AB
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Metallurgy and Metallic Materials
Original languageEnglish
Title of host publicationMCWASP XV: International Conference on Modelling of Casting, Welding and Advanced Solidification Processes
Volume861
Edition1
Publication statusPublished - 2020
Publication categoryResearch
Peer-reviewedYes
Event15th International Conference on Modelling of Casting, Welding and Advanced Solidification Processes, MCWASP 2020 - Jonkoping, Sweden
Duration: 2020 Jun 222020 Jun 23

Publication series

NameIOP Conference Series: Materials Science and Engineering
ISSN (Print)1757-8981

Conference

Conference15th International Conference on Modelling of Casting, Welding and Advanced Solidification Processes, MCWASP 2020
CountrySweden
CityJonkoping
Period2020/06/222020/06/23