Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

1 Publication
Effect of anisotropic microstructure of ODS steels on small punch test results
Altstadt, E.; Houska, M.; Das, A.;
Oxide dispersed strengthened (ODS) steels can exhibit a strongly anisotropic microstructure leading to anisotropic mechanical properties. The ductile to brittle transition temperature in the small punch (SP) test is therefore dependent on the specimen orientation. Three ODS steels with 13-14 mass percent Cr, manufactured through hot extrusion and hot rolling respectively, were investigated by means of SPT in different orientations. Existing microstructural data (EBSD) are used to discuss the anisotropic fracture behavior observed in the SPT. In addition, the SPT results are compared with those from existing fracture mechanics tests based on sub-sized C(T) samples. The applicability of the empirical conversion of SPT based transition temperatures into Charpy transition temperatures – well established for isotropic homogeneous metals – is investigated for materials with anisotropic microstructure.
Keywords: small punch test, ductile-to-brittle transition temperature, oxide dispersion strengthened steel
  • Contribution to proceedings
    5th International Small Sample Test Techniques (SSTT) Conference 2018, 10.-12.07.2018, Swansea, United Kingdom
    Conference Proceedings of 5th International Small Sample Test Techniques Conference SSTT 2018, Swansea

Publ.-Id: 27482 - Permalink