Multiscale modeling of precipitation hardening: Application to the Fe–Cr alloys
Source abstract
Abstract
Abstract Precipitation hardening is investigated using dislocation dynamics (DD) simulations. Unlike classical approaches, precipitates are represented by an interaction potential, completely determined from atomistic simulations (ASs), including size and temperature effects. The transition method is first validated by comparing DD and ASs of interactions with one precipitate using the same simulation conditions and, then, applied in massive DD simulations for the prediction of hardening as a function of precipitate size, density and shear resistance over a large range of temperatures. Results show that hardening is always proportional to the Orowan hardening with an interaction coefficient depending on the effective resistance of the precipitates. A simple theoretical model is found to describe appropriately the ensemble of the reported results.
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Research context
OpenAlex topics: Microstructure and mechanical properties · High Temperature Alloys and Creep · Microstructure and Mechanical Properties of Steels
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (59)
Show source-provided references
1. Martin · 1998
2. Argon · 2007
3. Orowan strengthening and forest hardening superposition examined by dislocation dynamics simulations10.1016/j.actamat.2010.06.028 ↗
4. Double strengthening of copper by dissolved gold-atoms and by incoherent SiO2-particles: how do the two strengthening contributions superimpose10.1016/S1359-6454(00)00172-5 ↗
5. Nembach · 1997
6. Caillard · 2003
7. Dislocation movement through random arrays of obstacles10.1080/14786436608244762 ↗
8. The effect of dislocation self-interaction on the Orowan stress10.1080/14786437308227997 ↗
9. Friedel · 1964
10. Caillard · 2003
11. The elastic interaction between a straight dislocation and a bubble or a particle10.1016/0001-6160(69)90002-9 ↗
12. An attempt to estimate the degree of precipitation hardening with a simple model10.1088/0959-5309/52/1/312 ↗
13. Stacking-fault strengthening10.1080/14786436508228118 ↗
14. Dislocation-Obstacle Interactions at the Atomic Level
15. Probabilistic nature of the nucleation of dislocations in an applied stress field10.1016/j.scriptamat.2005.10.039 ↗
16. Temperature and strain-rate dependence of surface dislocation nucleation10.1103/PhysRevLett.100.025502 ↗
17. Activation enthalpy for kink-pair nucleation on dislocations: comparison between static and dynamic atomic-scale simulations10.1103/PhysRevB.76.144108 ↗
18. Determination of the activation energy by stochastic analyses of molecular dynamics simulations of dislocation processes10.1080/14786435.2011.596494 ↗
19. Mesoscale thermodynamic analysis of atomic-scale dislocation–obstacle interactions simulated by molecular dynamics10.1080/14786430903117133 ↗
20. Dislocation glide in Fe-carbon solid solution: from atomistic to continuum level description10.1016/j.ijplas.2014.06.006 ↗
21. Finite-size effects in dislocation glide through random arrays of obstacles: line tension simulations10.1103/PhysRevB.74.134110 ↗
22. Computer simulation of dislocation glide, comparison with statistical theories10.1016/0001-6160(86)90053-2 ↗
23. Thermally activated dislocation glide through a random array of point obstacles: computer simulation10.1063/1.1663541 ↗
24. Thermally activated motion of dislocations in fields of obstacles: the effect of obstacle distribution10.1103/PhysRevB.76.094112 ↗
25. Comparison between simulation calculations and measurements concerning athermal yielding of precipitation hardening of Cu–Co single crystals10.1016/0921-5093(93)90689-C ↗
26. Thermal activation analysis of dislocations in obstacle fields10.1016/S0927-0256(96)00066-3 ↗
27. Simulation of dislocation glide in precipitation hardened materials10.1016/S0927-0256(99)00056-7 ↗
28. Computer simulations of particle strengthening: lattice mismatch strengthening10.1016/S0921-5093(01)00993-5 ↗
29. Monnet · 2011 · 3
30. The peak- and overaged states of particle strengthened materials: computer simulations10.1016/S1359-6454(01)00153-7 ↗
31. Atomic modelling of strengthening mechanisms due to voids and copper precipitates in iron10.1080/14786430310001603364 ↗
32. Modelling dislocation–obstacle interactions in metals exposed to an irradiation environment10.1016/j.msea.2005.01.061 ↗
33. Strengthening due to coherent Cr precipitates in Fe–Cr alloys: atomistic simulations and theoretical models10.1016/j.actamat.2008.03.004 ↗
34. Strengthening due to Cr-rich precipitates in Fe–Cr alloys: effect of temperature and precipitate composition10.1063/1.3340522 ↗
35. Effect of neutron-irradiation on the microstructure of a Fe–12at.%Cr alloy10.1016/j.jnucmat.2011.05.042 ↗
36. Effect of Cr on the mechanical properties and microstructure of Fe–Cr model alloys after n-irradiation10.1016/j.jnucmat.2008.02.061 ↗
37. Mechanisms of radiation strengthening in Fe–Cr alloys as revealed by atomistic studies10.1016/j.jnucmat.2013.03.054 ↗
38. Strain rate sensitivity of thermally activated dislocation motion across fields of obstacles of different kind10.1016/j.msea.2008.10.046 ↗
39. Kampen · 2007
40. B. Devincre, R. Madec, G. Monnet, S. Queyreau, R. Gatti, L. Kubin, S. Forest, A. Ponchet, O. Thomas (Eds.) Modeling Crystal Plasticity with Dislocation Dynamics Simulations: The «MICROMEGAS» Code, Mechanics of Nano-Objects, 2011, pp. 81–100.
41. Kubin · 2013
42. Dislocation shear loops in anisotropic crystals10.1002/pssa.2210250204 ↗
43. The Orowan mechanism in anisotropic crystals10.1080/14786437508229295 ↗
44. D.J. Bacon, in: B.A. Bilby, K.J. Miller, J.R. Willis (Eds.), Fundamentals of Deformation and Fracture, C.U.P., 1985, pp. 401.
45. Suzuki · 1991
46. Orowan strengthening at low temperatures in bcc materials studied by dislocation dynamics simulations10.1016/j.actamat.2010.09.039 ↗
47. Interaction of an edge dislocation with voids in iron modelled with different interatomic potentials10.1088/0953-8984/20/44/445007 ↗
48. Investigation of precipitation hardening by dislocation dynamics simulations10.1080/14786430600860985 ↗
49. A. Seeger, in: Proceedings of 2nd UN International Conference on Peaceful Uses of Atomic Energy, vol. 6, Geneva, 1958, pp. 250.
50. Über die vermeintliche Isomerie des roten und gelben Quecksilberoxyds und die Oberflächenspannung fester Körper10.1515/zpch-1900-3431 ↗
51. The effects of the degree of randomness of arrays of shearable particles on the critical resolved shear stress of particle strengthened materials10.1016/j.actamat.2004.04.030 ↗
52. Dislocation-impenetrable precipitate interaction: a three-dimensional discrete dislocation dynamics analysis10.1080/14786430310001599379 ↗
53. Structure and mobility of the edge dislocation in BCC iron studied by molecular dynamics10.1016/j.actamat.2008.11.030 ↗
54. Atomic-scale avalanche along a dislocation in a random alloy10.1103/PhysRevB.84.174101 ↗
55. Solute dislocations and long range pinning of dislocations10.1016/0001-6160(61)90247-4 ↗
56. A statistical theory of solid solution hardening10.1002/pssb.19700410221 ↗
57. The statistical problem of hardening10.1016/0022-5088(72)90129-4 ↗
58. Neuhauser · 2006
59. Modeling of thermally activated dislocation glide and plastic flow through local obstacles10.1016/S0749-6419(02)00016-5 ↗