Large diameter tungsten-lanthana rod

   
   

A large-diameter tungsten-lanthana rod having an elongated grain structure substantially parallel to the longitudinal axis of the rod is described. The large diameter rod is produced by rolling at a temperature greater than 1400.degree. C. and less than 1700.degree. C. to achieve at least about a 40% reduction in cross-sectional area. The high strength of the longitudinally elongated grain structure is desirable for applications such as rocket nozzles.

Una barra de gran diámetro del tungsteno-lanthana que tiene una estructura alargada del grano substancialmente paralela al eje longitudinal de la barra se describe. La barra del diámetro grande es producida rodando en una temperatura mayor que 1400.degree. C. y menos que 1700.degree. C. para alcanzar por lo menos alrededor de una reducción del 40% en área seccionada transversalmente. La alta fuerza de la estructura longitudinalmente alargada del grano es deseable para los usos tales como inyectores del cohete.

 
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