Materials Algorithms Project Program Library

Program MAP_STEEL_Hot Strength

1. Provenance of code.
2. Purpose of code.
3. Specification.
4. Description of program's operation.
5. References.

Provenance of Source Code

Arijit Lodh,
Department of Meatllurgical Engineering and Materials Science,
Indian Institute of Technology, Bombay,
Mumbai, India

E-mail: arijitlodh@gmail.com

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Purpose

A program for the prediction of Flow stress as function of Chemical composition, Strain rate, Temperature and Strain.

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Specification

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Description

MAP_STEEL_Hot Strength contains the executable which enable the user to calculate the flow stress of steels as a function of temperature, strain rate, strain and chemical composition. It takes the chemical compostion as user defined input in wt-%, temperature as K and strain rate as Sec^-1. The allowable range for the input variables as as following

    "C"    "Mn"   "Si"     "Cu"   "Ni" "Cr"   "Mo"    "Nb"    "V"     "Ti"     "Al"   "S"      "P"     "N"    "B"     "Temperature"    "Strain Rate"   "True Strain"
Min 0.036  0.469   0   0   0   0   0   0   0   0   0   0   0   0   0   1053        0.001       0.00595
Max 0.45   1.5 0.342   1.72    3.55    2.408   1.033   0.033   0.236   0.062   0.1 0.0191  0.025   0.0084  0.0105  1473        10      0.88446

After opening the executable file, user has to give the necessary input corresponding to each variable. When it will ask for "How many points of strain you want to calculate", the user has to provide the total number of
points on stress-strain curve. Then it will ask to "Enter maximum value of True Strain". Based on these two input, the code will calulate the strain values which will be an input for stress calculation. Output will be displayed
as a screen print as well as a text file named "Results.txt" will be generated with the strain and stress values.

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Example

Program input

    "C"    "Mn"   "Si"     "Cu"   "Ni" "Cr"   "Mo"    "Nb"    "V"     "Ti"     "Al"   "S"      "P"     "N"    "B"     "Temperature"    "Strain Rate"   "No. of points of strain"   "True Strain"
    0.002  0.13    0.02    0.014   0.025   0.037   0.008   0.002   0.002   0.062   0.03    0.009   0.005   0.003   0   1198        0.1     16      0.91923

Program results

True Strain                   True Stress
 ______________________________________
     1.000000E-02     65.1523
     6.682687E-02     83.6303
     0.123654         91.9390
     0.180481         96.0409
     0.237308         98.1420
     0.294134         99.1853
     0.350961         99.6216
     0.407788         99.6861
     0.464615         99.5108
     0.521442         99.1737
     0.578269         98.7237
     0.635096         98.1923
     0.691923         97.6007
     0.748749         96.9637
     0.805576         96.2917
     0.862403         95.5921

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References

1. Arijit Lodh, Arijit Biswas and Sourav Das, Ironmaking & Steelmaking, Accepted Manuscript
   DOI: http://dx.doi.org/10.1179/1743281214Y.0000000230
   

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