Super heat-resisting Mo-based alloy and method of producing same
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United States of America Patent
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Apr 3, 2001
Grant Date -
N/A
app pub date -
Feb 1, 1999
filing date -
Oct 24, 1995
priority date (Note) -
Expired
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Abstract
A super heat-resisting molybdenum-based alloy is disclosed. The alloy includes two or more alloying elements, the type and amount of the alloying elements being determined such that their average d-orbital energy level (average Md) and average bond order (average Bo) satisfy the following formula (3) and such that Tm is in the range of 2250-2700.degree. C. in the following formula (4), the average Md and Bo being calculated by the formulas (1) and (2), and the bond order (Bo) with molybdenum and a d-orbital energy level being determined by the DV-X.alpha. cluster method: Average Bo=.SIGMA.Bo.sub.i.times.C.sub.1 (1) Average Md=.SIGMA.Md.sub.i.times.C.sub.i (2) 1.718.ltoreq.average Md.ltoreq.1.881 (3) Tm(.degree.C.)=(average Bo-0.165.times.average Md-4.899)/9.279.times.10.sup.-5 (4) wherein, Bo.sub.i is a bond order of element 'i', Md.sub.i is a d-orbital energy level of element 'i', and C.sub.1 is an atomic percent of element 'i'.
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