process for the manufacture of a casting of a uraniumlegering for use in a nuclear reactor, which works with natural uranium, and casting is obtained by application of the method.

摘要

1,146,704. Nuclear fuel. COMPAGNIE POUR L'ETUDE ET LA REALISATION DE COMBUSTIBLES ATOMIQUES. 1 April, 1966 [3 April, 1965], No. 14620/66. Heading G6C. [Also in Division C7] Uranium nuclear fuel elements are cast from a uranium base alloy containing one or more grain fining elements (e.g. Mo, Cr, Fe, Si or Ge, preferably in an amount of 0À1-4%) and 5-2000 p.p.m. in total of B and/or Be. The castings are preferably tubular and are cooled at a mean rate of 15‹ C. per minute between 850‹ and 650‹ C.