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New method of preparation of dispersion-hardening materials: improvement of mechanical properties of as-cast eutectics followed by heavy deformation

par Terao, N.;Dille, Jean ;Vielvoye, G.;Berghezan, Aurel
Référence the fourth International Conference on Composite Materials, ICCM-IV(25.10.1982 - 28.10.1982: Tokyo, Japan ;), Progress in science and engineering of composites, Hayashi, T ; Kawata, K ; Umekawa, S ;, Vol. 2, page (1585-1592)
Publication Publié, 1982

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Résumé :

A method was developed for prepg. dispersion-strengthened eutectics. The method consists of casting a eutectic alloy contg. a fine fiber structure and heavily deforming by isostatic extrusion. The fibrous intermetallic phase is elongated in the extrusion direction and is broken up into fine particles uniformly dispersed in the ductile matrix. The method was used on eutectic Al-5.7 wt.%Ni [39313-74-1] with Al3Ni [12004-71-6] fibers. The addn. of small amts. of Cu or Fe increased the hardening. B was not as effective but increased the ductility, esp. at high temps.