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A.Y. Badmos and C. Capdevila,
Phase Transformations Group,
Department of Materials Science and Metallurgy,
University of Cambridge,
Cambridge, U.K.
Program modified: 26-2-1999
To calculate the components of the yield strength of the recrystallized and unrecrystallized mechanically alloyed ODS ferritic steel, MA956.
The program is self-contained.
| Language: | FORTRAN |
| Product form: | Source code |
The yield strength of the MA956 is calculated as a linear combination of contributions from a number of mechanisms generally expressed as:-
The recrystallized alloy has coarse grain structure and there is no contribution from the grain boundary strengthening.
| Name | Type | Description |
|---|---|---|
| MO | real | Concentration of molybdenum in wt%. |
| CR | real | Concentration of chromium in wt%. |
| TI | real | Concentration of titanium in wt%. |
| PWT | real | Concentration of particles in wt%. |
| PRAD | real | Particle radius. |
| PARTD | real | Density of the particle. |
| PARTD | real | Density of the particle. |
| MATRD | real | Density of the matrix. |
| GSIZE | real | Grain size of the unrecrystallised alloy. |
| DDENS | real | Dislocation density. |
| AVAC | real | Area associated with a vacancy. |
| DDIF | real | Constant of difussivity coefficent. |
| QES | real | Self-difussion activation energy for the alloy. |
| SRATE | real | Strain rate. |
| RGAS | real | Gas constant. |
| BUGV | real | Burgers vector. |
| SMOD | real | Shear modulus. |
| A(I,J) | double precision | A 13x4 array consisting of temperature in column 1 and corresponding scale factors relative to room temperature for matrix strength in column 2, solid solution strenghtening in column 3 and grain boundary strengthening in column 4. |
| Name | Type | Description |
|---|---|---|
| PIRON | real | Strength of pure iron. |
| SSOL | real | Solid solution strengthening. |
| PARTS | real | Particle strengthening. |
| GRAS | real | Grain size strengthening in the unrecrystallized alloy. |
| RYST | real | Total yield strength of recrystallized alloy. |
| URST | real | Total yield strength of of unrecrystallized alloy. |
None.
No information supplied.
None.
Complete program
MO = 0.0D0
CR = 20.0D0
TI = 0.5D0
PRAD = 5.695D-09
GSIZE = 0.9D-06
DDENS = 10D+14
RGAS = 8.314510
AVAC = 1.95D-20
DDIF = 5.0D-05
QES = 240000.0
K = RGAS/6.023D23
SMOD = 8.6D+10
BUGV = 2.485D-10
MATRD = 7200.0
PARTD = 5030.0
PWT = 0.5/100
SRATE = 3.3D-4
A(I,J):
20.0d0 1.0d0 1.0d0 1.0d0
100.0d0 0.7334d0 0.9713d0 1.03d0
200.0d0 0.6667d0 0.7856d0 1.03d0
300.0d0 0.6667d0 0.6858d0 1.0d0
400.0d0 0.6667d0 0.5427d0 0.9118d0
500.0d0 0.6667d0 0.4143d0 0.6177d0
600.0d0 0.5999d0 0.3364d0 0.2941d0
700.0d0 0.3333d0 0.2731d0 0.1471d0
800.0d0 0.2425d0 0.2217d0 0.0294d0
900.0d0 0.1765d0 0.1800d0 0.0d0
100.0d1 0.1284d0 0.1461d0 0.0d0
110.0d1 0.0935d0 0.1186d0 0.0d0
120.0d1 0.0680d0 0.0963d0 0.0d0
CTEMP KTEMP PIRON SSOL PARTS GRAS RYST URST
27. 300. 216. 116. 178. 530. 510. 1040.
127. 400. 158. 113. 150. 546. 422. 968.
227. 500. 144. 92. 134. 546. 369. 915.
327. 600. 144. 80. 123. 530. 346. 876.
427. 700. 144. 63. 115. 483. 322. 805.
527. 800. 144. 48. 109. 327. 301. 629.
627. 900. 129. 39. 104. 156. 273. 429.
727. 1000. 72. 32. 101. 78. 205. 283.
827. 1100. 52. 26. 98. 16. 176. 192.
927. 1200. 38. 21. 95. 0. 155. 155.
1027. 1300. 28. 17. 93. 0. 138. 138.
1127. 1400. 20. 14. 92. 0. 126. 126.
1227. 1500. 15. 11. 90. 0. 116. 116.
None.
yield strength components, mechanically alloyed ferritic steel
MAP originated from a joint project of the National Physical Laboratory and the University of Cambridge.
MAP Website administration / map@msm.cam.ac.uk
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