Fiber reinforced refractory castables for SPF toolings

Gérard Bernhart (1) , F. Nazaret (1) , Thierry Cutard (1)

1 CROMeP - Centre de Recherche Outillages, Matériaux et Procédés

Fiber reinforced refractory castable (FRRC) is an emerging material solution to manufacture SPF tools for forming titanium alloy sheets. Indeed, FRRC are able to conserve good mechanical properties up to 900 degrees C. Fiber reinforcement allows to improve mechanical properties and to avoid a catastrophic failure. Moreover, constitutive laws can be considered to reproduce the FRRC's mechanical behaviour when using FEM codes. As a consequence, it is now possible to proceed to a numerical design of SPF tools that are based on FRRC. Following this route, large SPF tools have been designed, manufactured and tested under industrial conditions. Successful results have been obtained in the field of forming TA6V sheets.

Mots clés: damage model; Refractory castable; fiber; superplastic forming; tool

Domaines: Sciences de l'ingénieur [physics]

Gérard Bernhart, F. Nazaret, Thierry Cutard. Fiber reinforced refractory castables for SPF toolings. Materials Science and Engineering Technology / Materialwissenschaft und Werkstofftechnik, 2008, 39 (4-5), pp.317-321. ⟨10.1002/mawe.200800297⟩. ⟨hal-01714931⟩