SANS study of the microstructural evolution of martensitic steels under thermal ageing and neutron irradiation

M.H. Mathon 1 G. Geoffroy 2 Y. de Carlan 3 A. Alamo 3 C.H. de Novion 1
1 LLB - UMR 12 - Laboratoire Léon Brillouin
2 LSI - Laboratoire des Solides Irradiés
3 SRMA - Service des Recherches Métallurgiques Appliquées
DMN - Département des Matériaux pour le Nucléaire : DEN/DMN
Abstract : SANS technique has been used to study the microstructural evolution of martensitic steels containing 7-12% Cr, under thermal ageing and neutron irradiation. Some of the investigated alloys are industrial low activation martensitic (LAM) materials, where alloying elements have been substituted by elements with low radiological impact. For materials quenched from the austenitic phase, a direct correlation was found between the hardening and the number density of M2C precipitates induced by thermal ageing at 500 °C. Irradiation-accelerated spinodal decomposition of the B.C.C. ferrite was observed in alloys containing large (= 11%) chromium content.
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Submitted on : Friday, August 24, 2012 - 10:38:36 AM
Last modification on : Wednesday, March 27, 2019 - 4:26:01 PM

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M.H. Mathon, G. Geoffroy, Y. de Carlan, A. Alamo, C.H. de Novion. SANS study of the microstructural evolution of martensitic steels under thermal ageing and neutron irradiation. Physica B: Condensed Matter, Elsevier, 2000, 276-278 (1), pp.939. ⟨10.1016/S0921-4526(99)01299-5⟩. ⟨hal-00725142⟩

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