Cascade of Peritectic Reactions in the B-Fe-U System

M. Dias (1, 2) , P.A. Carvalho (2) , A.P. Dias (3) , Marcel Bohn (4, 5) , N. Franco (6) , Olivier Tougait (7) , Henri Noël (7) , A.P Gonçalves (1)

1 CFMC-UL - Dep. Quimica
2 Departemento de Engenharia de Materiais
3 Departamento de Engenharia Quimica et Biologica
4 LDO - Domaines Océaniques
5 UEB - Université européenne de Bretagne - European University of Brittany
6 Departamento de Fisica
7 ISCR - Institut des Sciences Chimiques de Rennes

The solidification paths for UFeB4, UFe3B2 and UFe4B, ternary compounds, situated along the U:(Fe,B) = 1:5 line in the B-Fe-U phase diagram, are proposed based on x-ray powder diffraction measurements, differential thermal analysis, heating curves and scanning electron microscopy observations complemented with energy and wavelength dispersive x-ray spectroscopies. The compounds melt incongruently and are formed by peritectic reactions. The present work demonstrates the existence of a cascade of peritectic reactions along the U:(Fe,B) = 1:5 composition line, establishes peritectic temperatures and proposes an isopleth diagram along this line

Mots clés: microstructure; phase transformations; ternary alloy system

Domaines: Géochimie; Milieux et Changements globaux

M. Dias, P.A. Carvalho, A.P. Dias, Marcel Bohn, N. Franco, et al.. Cascade of Peritectic Reactions in the B-Fe-U System. Journal of Phase Equilibria, 2010, 31, pp.104-112. ⟨10.1007/s11669-009-9642-7⟩. ⟨insu-00563268⟩