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Program MAP_STEEL_MUCG83

  1. Provenance of code.
  2. Purpose of code.
  3. Specification.
  4. Description of program.
  5. References.
  6. Parameter descriptions.
  7. Error indicators.
  8. Accuracy estimate.
  9. Any additional information.
  10. Example of code
  11. Auxiliary subroutines required.
  12. Keywords.
  13. Download source code.
  14. Links.

Provenance of Source Code

Mathew Peet and H.K.D.H. Bhadeshia,
Phase Transformations and Complex Properties Group,
Department of Materials Science and Metallurgy,
University of Cambridge,
Cambridge, U.K.

Based on mucg46, and mucg73.

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Purpose

A powerful suite of software for modelling of the thermodynamics and kinetics of solid-state transformations in steels. Calculates Widmanstatten, Bainite and Martensite start temperatures. This program corrects an inconsistency in MUCG73, where a modified free energy function for pure iron was substituted into MUCG46, without making adjustments to other algorithms. Here the program reverts to the free energy function of MUCG46 to restore consistency.

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Specification

Language: FORTRAN 77
Product form: Source code and documentation in zipped tape archive file (.tar.gz). or zip file (.zip).

See mucg83.f and included documentation files inside the file mucg83.tar.gz or .zip.

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Description of Program

MAP_STEEL_MUCG83 is a modified version of MUCG73 and MUCG46.

The program asks for compositions (in wt.%) of eleven constituents to be supplied. There are maximum and minimum limits imposed on each constituent as shown :-

Input
Order
Element Max. (wt.%) Min. (wt.%)
1 Carbon 2.0 0.001
2 Silicon 2.5 0.0
3 Manganese 3.5 0.0
4 Nickel 3.5 0.0
5 Molybdenum 1.5 0.0
6 Chromium 3.5 0.0
7 Vanadium 1.5 0.0
8 Cobalt 4.0 0.0
9 Copper 4.0 0.0
10 Aluminium 2.0 0.0
11 Tungsten 4.0 0.0

The program will return an error message if these limits are exceeded.

The maximum number of different alloys which can be analysed in a single run is set by the variable J1 (currently 20).

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References

  1. H.K.D.H. Bhadeshia, A thermodynamic analysis of isothermal transformation diagrams, Metal Science, 16 (1982) 159-165.
  2. H.K.D.H. Bhadeshia, Bainite in Steels, Institute of Materials, London (1992), 1-450.

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Parameters

Input parameters

C - real array of dimension 12
C holds the composition of each alloy:-
C(1) is the Carbon concentration (in weight percent).
C(2) is the Silicon concentration (in weight percent).
C(3) is the Manganese concentration (in weight percent).
C(4) is the Nickel concentration (in weight percent).
C(5) is the Molybdenum concentration (in weight percent).
C(6) is the Chromium concentration (in weight percent).
C(7) is the Vanadium concentration (in weight percent).
C(8) is the Cobalt concentration (in weight percent).
C(9) is the Copper concentration (in weight percent).
C(10) is the Aluminium concentration (in weight percent).
C(11) is the Tungsten concentration (in weight percent).
C(12) is the Ferrite concentration (not entered).

J6 - integer
J6 is the identifying number of each alloy to be examined.

Output parameters

None
All output is to the screen.

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Error Indicators

Allowable composition ranges limited - see Description.

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Accuracy

No information supplied.

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Further Comments

None.

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Example

1. Program text

       N/A - complete program


2. Program data

1
1.0 0 0 0 0 0 0 0 0 0 0


3. Program Results

See example.txt for full output.
 *******  NUMBER    1  *********
    C=  1.0000   Si=  0.0000   Mn=  0.0000   Ni=  0.0000   Mo=  0.0000   Cr=  0.0000
    V=  0.0000   Co=  0.0000   Cu=  0.0000   Al=  0.0000    W=  0.0000

    C=  0.0449   Si=  0.0000   Mn=  0.0000   Ni=  0.0000   Mo=  0.0000   Cr=  0.0000
    V=  0.0000   Co=  0.0000   Cu=  0.0000   Al=  0.0000    W=  0.0000

  CARBON CONTENT=   0.04485  T10=  0.000000  T20=  0.000000   WGAMMA=  8054.
-------------------------------------------------------------------------------------------------------------------------------
   FPRO  FPROA   GMAX  CTEMP  X NUCLEUS  FSON      XEQ    XEQ50   FTO      XTO     VOLF    X44      XTO400       SHEART DIFFT
  -2021. -2586. -3105.  200.  0.87E-07  -3073.   0.2018   0.1920 -1171.  0.0903   0.7800 0.603E-01  0.0697  8   0.18E+05   0.25E+24
  -1991. -2552. -3065.  205.  0.11E-06  -3038.   0.2005   0.1906 -1146.  0.0914   0.7786 0.605E-01  0.0696  2   0.13E+05   0.65E+23
  -1959. -2516. -3025.  210.  0.13E-06  -3001.   0.1991   0.1891 -1121.  0.0915   0.7771 0.601E-01  0.0687  4   0.88E+04   0.18E+23
  -1928. -2480. -2987.  215.  0.16E-06  -2964.   0.1978   0.1877 -1096.  0.0906   0.7755 0.596E-01  0.0679  4   0.62E+04   0.49E+22
  -1896. -2445. -2959.  220.  0.20E-06  -2927.   0.1965   0.1862 -1071.  0.0893   0.7740 0.590E-01  0.0671  4   0.44E+04   0.14E+22
  -1865. -2409. -2913.  225.  0.24E-06  -2890.   0.1951   0.1848 -1046.  0.0880   0.7724 0.585E-01  0.0663  4   0.32E+04   0.41E+21
.
.
.
     -14.   -73.  -146.  645.  0.14E-02   -134.   0.0555   0.0204     0.  0.0189   0.1955 0.000E+00  0.0060  3   0.44E+04   0.15E+03
     -9.   -56.  -118.  650.  0.14E-02   -105.   0.0533   0.0174     0.  0.0183   0.1612 0.000E+00  0.0050  4   0.12E+05   0.26E+03
     -5.   -40.   -89.  655.  0.15E-02    -76.   0.0510   0.0143     0.  0.0175   0.1234 0.000E+00  0.0041  4   0.46E+05   0.58E+03

    ***** FTO VERSUS TEMPERATURE ****
 WIDMANSTATTEN FERRITE START TEMPERATURE  =   345. C
 GROWTH LIMITED BAINITE START TEMPERATURE =   356. C
 NUCLEATION LIMITED BAINITE START TEMP    =   345. C
 MARTENSITE START TEMPERATURE             =   129. C
-------------------------------------------------------------------------------------------------------------------------------

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Auxiliary Routines

Steel Subroutines

MAP_STEEL_GMAAX
MAP_STEEL_HETRO
MAP_STEEL_OMEGA2

Steel Functions

MAP_STEEL_AFEG
MAP_STEEL_CG
MAP_STEEL_DAFEG
MAP_STEEL_DCG
MAP_STEEL_ENERGY
MAP_STEEL_FTO1
MAP_STEEL_G91
MAP_STEEL_XALPH

Utility Subroutines

MAP_UTIL_REED
MAP_UTIL_REEDI

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Keywords

Widmanstatten, bainite, martensite, start temperature

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Download

Download tar arhive containing source code.

Download zip file containing source code.

Download compiled executable for Windows

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MAP originated from a joint project of the National Physical Laboratory and the University of Cambridge.