1. Interplay of
Modelling Techniques

3. materials modelling
Pettifor

4. 0.4 C
2 Si
3 Mn
wt%
1 µm

5. 50 µm

9. U.K.

10. Fe-2Si-3Mn-C wt% 800 B 600 Temperature / K 400 M 200 0.2 0.4 0.6 0.8 1
0.2
0.4
0.6
0.8 1
1.2
1.4
Carbon / wt%

11. Fe-2Si-3Mn-C wt% 1.E+08 1 month Time / s 1.E+04 1.E+00 0.5 1 1.5
1 year
1 month
Time / s
1.E+04
1.E+00
0.5 1
1.5
Carbon / wt%

13. g g a a a
200 Å

14. Stress / GPa
Velocity km s-1
Hammond and Cross, 2004

15. GRP mild steel “superbainite” vehicle steel Peter Brown (DSTL)
Dave Crowther (QinetiQ)

16. “more serious battlefield threats”

17. ballistic mass efficiency
consider unit area of armour

19. Phase diagrams

20. Generalised models (binary)
Hillert, Kaufman, Kubachewski

21. Ternary approximation

22. Ternary interactions

25. Lengthening rate / m s-1 Te
Temperature / °C
Bhadeshia, 1985

26. Solution models
Quasichemical approximation, atoms are not distributed at random. Pairs of atoms are treated as independent entities

30. Reference state
Chen, Hansip & Bhadeshia, 2004

31. Distant and near-neighbours

32. -0.17 eV
2.17 eV
Chen, Hansip & Bhadeshia, 2004

35. Kirkaldy, 1968

36. Siller and McLellan, 1969

38. Bhadeshia, 1981

41. anitferromagnetic ground state
Weiss and Tauer

43. Kaufman

44. French National Railways
(Howard Smith)

45. tallest building
in the world
earthquakes

47. cooling of constrained tensile specimen

48. Variables C, Mn, Si, Ni, Cr, Mo, V, Co, B, N, O…..
Thermomechanical processing of steel
Welding consumable
Welding parameters
Subsequent heat treatment

49. ESRF Synchrotron

50. Synchrotron studies

53. critical stress intensity
Charpy
fatigue
tensile
critical stress intensity
corrosion

54. non-linear functions

56. Keehan et al., 2004

57. Fusion Power light nuclei combine into heavier nuclei
Same process as occurs in the sun
Produces heat
Releases neutrons
Combination of deuterium and tritium into helium (alpha particles) and neutrons - at 14 MeV
Neutrons escape plasma (uncharged) and so are absorbed by the reactor walls - releasing heat.

58. steel to resist damage from fast neutrons
low-activation

59. Kemp, Cottrell and Bhadeshia, 2005

60. Kemp, Cottrell, Bhadeshia, Odette, Yamamoto and Kishimoto, 2005