Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Synchrotron diffraction analysis of retained austenite in welded transformation induced plasticity (TRIP) steels

  • M. Amirthalingam
  • M. J. M. Hermans
  • R. M. Huizenga
  • S. E. Offerman
  • I. M. Richardson
  • Carsten Gundlach
Publiceringsår: 2012
Språk: Engelska
Sidor: 146-154
Publikation/Tidskrift/Serie: Science and Technology of Welding and Joining
Volym: 17
Nummer: 2
Dokumenttyp: Artikel i tidskrift
Förlag: Maney Publishing


A quantitative analysis of the retained austenite (RA) fractions in gas tungsten arc welded silicon and aluminium containing transformation induced plasticity steels was carried out by synchrotron X-ray diffraction measurements. The variation in RA transverse to the weld line was measured to study the effect of weld thermal cycles on the stabilisation of austenite in the heat affected zone (HAZ) and the fusion zone (FZ). The results showed that the FZ of silicon based steels contained a higher amount of RA (similar to 7%) than aluminium based steels, which contained only similar to 4%. During the solidification of the weld pool, aluminium was found to partition to solidifying delta-ferrite and to stabilise the soft delta-ferrite grains at the fusion boundaries. Owing to this partitioning, the HAZ was enriched in carbon and the RA content was found to increase with distance from the fusion boundaries. In contrast, this partitioning behaviour was not present in silicon based transformation induced plasticity steels and a lesser amount of RA was found in the coarse grained HAZ than in the FZ.


  • Natural Sciences
  • Physical Sciences
  • TRIP steels
  • Retained austenite
  • Synchrotron diffraction
  • GTA welding


  • ISSN: 1362-1718

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen