Dislocation activity and nano-void formation near crack tips in nanocrystalline Ni
Source abstract
Abstract
Molecular statics is used to study the crack propagation in model nanocrystalline Ni with a mean grain size of 10 nm. It is shown that the crack propagates intergranularly, creating nano-voids ahead of the crack which coalesce gradually. Plasticity in the neighborhood of the crack tip is observed to be mediated by dislocation activity. The sequential emission of partials results in the observation of full dislocations and twinning.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microstructure and mechanical properties · nanoparticles nucleation surface interactions · Electromagnetic Effects on Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Selinger RLB, Farkas D, guest editors. Special issue on Theory and Simulation of Fracture MRS Bulletin 2000;2510.1557/mrs2000.67 ↗
2. Van Swygenhoven · Appl Phys Lett · 1997 · 71 · 165210.1063/1.119785 ↗
3. Van Swygenhoven · Phys Rev B · 1988 · 58 · 1124610.1103/PhysRevB.58.11246 ↗
4. Van Swygenhoven · Phys Rev B · 2000 · 62 · 83110.1103/PhysRevB.62.831 ↗
5. Van Swygenhoven · Phys Rev B · 1999 · 62 · 2210.1103/PhysRevB.60.22 ↗
6. Yamakov · Acta Mater · 2001 · 49 · 271310.1016/S1359-6454(01)00167-7 ↗
7. Schiøtz · Nature · 1998 · 391 · 56110.1038/35328 ↗
8. Van Swygenhoven · Phys Rev B · 2001 · 64 · 22410510.1103/PhysRevB.64.224105 ↗
9. Van Swygenhoven · Phys Rev B · 2002 · 66 · 2410110.1103/PhysRevB.66.024101 ↗
10. Derlet · Philos Mag · 2003 · 83 · 356910.1080/14786430310001599397 ↗
11. Schiøtz · Phys Rev B · 1999 · 60 · 1197110.1103/PhysRevB.60.11971 ↗
12. Hasnaoui · Phys Rev B · 2002 · 66 · 18411210.1103/PhysRevB.66.184112 ↗
13. Van Swygenhoven · Nature Mater · 2004 · 3 · 39910.1038/nmat1136 ↗
14. Frøseth AG, Derlet PM, Van Swygenhoven H. Acta Mater 2004;52:586310.1016/j.actamat.2004.09.001 ↗
15. Kumar · Acta Mater · 2003 · 51 · 38710.1016/S1359-6454(02)00421-4 ↗
16. McFadden · MRS Proc · 2001 · 634 · B1.3.110.1557/PROC-634-B1.3.1 ↗
17. Youngdahl · Scripta Mater · 2001 · 44 · 147510.1016/S1359-6462(01)00712-6 ↗
18. Milligan · Nanostruct Mater · 1993 · 2 · 26710.1016/0965-9773(93)90153-3 ↗
19. Hugo · Acta Mater · 2003 · 51 · 193710.1016/S1359-6454(02)00599-2 ↗
20. Farkas · Philos Mag A · 2001 · 81 · 124110.1080/01418610108214439 ↗
21. Derlet · Philos Mag A · 2002 · 82 · 110.1080/01418610208239992 ↗
22. Farkas · Phys Rev B · 2002 · 66 · 6010110.1103/PhysRevB.66.060101 ↗
23. Mishin · Phys Rev B · 1999 · 59 · 339310.1103/PhysRevB.59.3393 ↗
24. Honeycutt · J Phys Chem · 1987 · 91 · 495010.1021/j100303a014 ↗
25. Cormier · J Appl Phys · 2001 · 89 · 9910.1063/1.1328406 ↗
26. Samaras · Phys Rev B · 2003 · 66 · 22411110.1103/PhysRevB.68.224111 ↗
27. Hasnaoui · Acta Mater · 2002 · 50 · 392710.1016/S1359-6454(02)00195-7 ↗
28. Ashby · 1986
29. Hai · Acta Mater · 2003 · 51 · 11710.1016/S1359-6454(02)00367-1 ↗
30. Farkas · Philos Mag Lett · 2000 · 80 · 22910.1080/095008300176209 ↗
31. Wei · J Mech Phys Solids · 2004 · 52 · 258710.1016/j.jmps.2004.04.006 ↗
32. Sansoz · Scripta Mater · 2004 · 50 · 128310.1016/j.scriptamat.2004.02.031 ↗