Microstructural study of an ODS stainless steel obtained by Hot Uni-axial Pressing - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Journal of Nuclear Materials Année : 2013

Microstructural study of an ODS stainless steel obtained by Hot Uni-axial Pressing

Résumé

This study focuses on the consolidation of an ODS Fe–14Cr–1W–0.3Ti–0.3Y2O3 alloy obtained by powder metallurgy. The powder was sintered for 1 h at 1100 °C in a soft steel can and compacted by Hot Uni-axial Pressing (HUP) under 900 MPa within less than 5 s before air cooling. The HUPped material microstructure is prospected to determine relative density as well as microstructure and nano-precipitation. The HUP, which mimics the early stage of hot extrusion (HE), produces a fully dense metallurgical state. The HUPped microstructure is shown to be rather similar to the one obtained by HIPping for equivalent dwell time at high temperature. In both cases heterogeneous grain size microstructure was obtained. It is shown that the bigger grains come from static recrystallization occurring during the dwell time in furnace. Compared to HIP, the effect of the HUP is mainly to introduce intra-granular misorientations within these large recrystallized grains.

Dates et versions

hal-03059566 , version 1 (12-12-2020)

Identifiants

Citer

D. Sornin, T. Grosdidier, J. Malaplate, I. Tiba, P. Bonnaillie, et al.. Microstructural study of an ODS stainless steel obtained by Hot Uni-axial Pressing. Journal of Nuclear Materials, 2013, 439 (1-3), pp.19-24. ⟨10.1016/j.jnucmat.2013.03.066⟩. ⟨hal-03059566⟩
30 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More