Nickel-base superalloy
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United States of America Patent
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Mar 15, 1994
Grant Date -
N/A
app pub date -
May 6, 1991
filing date -
May 7, 1990
priority date (Note) -
Expired
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Abstract
In section bars and shaped bodies made of nickel-base superalloys having a structure consisting of columnar grains, a complete recrystallization cannot be effected unless the heating-up rate is kept below a maximum heating-up rate T.sub.max, which depends on the ratio V of one or more of the metal carbide-forming elements hafnium, niobium, tantalum, titanium and zirconium to one or both of the metal carbide-forming elements tungsten and molybdenum.
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