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Boron and zirconium from crucible refractories in a complex heat-resistant alloy
In a laboratory study of the factors involved in the influence of induction vacuum melting on 55ni-20cr-15co-4mo-3ti-3al heat resistant alloy, it was found that the major factor was the type of ceramic used as the crucible. The study concluded that trace amounts of boron or zirconium derived from reaction of the melt with the crucible refactories improved creep-rupture properties at 1,600 degrees F. Boron was most effective and, in addition, markedly improved hot-workability.
Date:
August 5, 1958
Creator:
Decker, R. F.; Rowe, John P. & Freeman, J. W.
System:
The UNT Digital Library