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H.K.D.H. Bhadeshia,
Phase Transformations Group,
Department of Materials Science and Metallurgy,
University of Cambridge,
Cambridge, U.K.
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This subroutine is for the calculation of the fraction and composition of gamma
prime in nickel base superalloys, together with their mechanical properties.
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Language: | FORTRAN
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Product form: | Source code |
SUBROUTINE MAP_NICKEL_SUPER4(S,SUMVAC,A,Y,V,F,B,C,M,UTS20,
& UTS650,UTS760,UTS871,UTS982)
DOUBLE PRECISION S(8),A(8),Y(8),V(8),P(8),VAC(8),AS(8),
& SUMVAC,UTS20,UTS650,UTS760,UTS871,UTS982,F,B,C,M
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If SUMVAC, the electron-valency concentration, is less than 2.3, then the matrix
is stable to the formation of topologically close-packed phases. It is unstable
otherwise.
The arrays S,A,Y, and V contain concentrations of the following alloy elements
(in order): nickel, chromium, molybdenum, aluminium, titanium, cobalt, tungsten,
and tantalum.
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- S. Atamert and H. K. D. H. Bhadeshia, Materials Science and Technology,
5 (1989) 1220-1228.
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Input parameters
- S - real array of dimension 8
- S contains the concentrations (in weight percent) of the elements in the
alloy.
Output parameters
- SUMVAC - real
- SUMVAC is the electron-vacancy concentration.
- A - real array of dimension 8
- A is the concentrations (in atomic percent) of the elements in the alloy.
- Y - real array of dimension 8
- Y contains the atomic weights in gamma'.
- V - real array of dimension 8
- V contains the atomic weights in gamma.
- F - real
- F is the volume fraction of gamma'. If the calculated value of F is negative,
then F is set to zero.
- B - real
- B is the gamma' lattice parameter (in nanometres).
- C - real
- C is the gamma lattice parameter (in nanometres).
- M - real
- M is the percentage lattice misfit.
- UTS20 - real
- UTS20 is the tensile strength (in MPa) at a temperature of 20°C.
- UTS650 - real
- UTS650 is the tensile strength (in MPa) at a temperature of 650°C.
- UTS760 - real
- UTS760 is the tensile strength (in MPa) at a temperature of 760°C.
- UTS871 - real
- UTS871 is the tensile strength (in MPa) at a temperature of 871°C.
- UTS982 - real
- UTS982 is the tensile strength (in MPa) at a temperature of 982°C.
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None.
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No information supplied.
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None.
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1. Program text
None supplied.
2. Program data
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3. Program results
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None.
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electron-vacancy, tensile strength
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Download source code
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