Thermal ridges – Formation of hillock-like structures in deformed bulk nickel
Source abstract
Abstract
The effect of surface topography on grain boundary migration has been the focus of numerous studies due to its importance for microstructure evolution in thin films . In this work we have studied grain boundaries in samples of pure bulk Ni after mild cold deformation and a subsequent anneal. The surface topography in the vicinity of grain boundaries featured large protrusions formed during the anneal with a striking resemblance to downscaled terrestrial mountains. We coined the term `thermal ridges` to describe these protrusions. Their size decreases with increasing annealing time and degree of deformation. We developed a kinetic model of ridges based on the original Mullins’ model of mobile grain boundary grooves modified to account for high surface anisotropy. The combination of our experimental and modeling results sheds new light on the phenomenon of hillock formation in thin polycrystalline films.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fluid Dynamics and Thin Films · Adhesion, Friction, and Surface Interactions · Copper Interconnects and Reliability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (52)
Show source-provided references
1. Humphreys · 2017
2. Gottstein · 2010
3. Grain boundary velocity and curvature are not correlated in Ni polycrystals10.1126/science.abj3210 ↗
4. The effect of thermal grooving on grain boundary motion10.1016/0001-6160(58)90020-8 ↗
5. Energy of a bcc iron deformation twin boundary10.1063/1.1658707 ↗
6. Effect of stress on grain boundary motion in thin films10.1063/1.359324 ↗
7. Grains, growth, and grooving10.1103/PhysRevLett.91.026101 ↗
8. Theory of thermal grooving10.1063/1.1722742 ↗
9. The kinetics of grain boundary grooving in copper10.1016/0001-6160(59)90069-0 ↗
10. Evaluation of dihedral angle twin boundaries in Cu10 wt % Zn alloy using atomic force microscopy10.1017/S1431927621011995 ↗
11. Correlation between grain boundary energy and geometry in Ni-rich NiAl10.1016/j.actamat.2005.04.043 ↗
12. Measuring the influence of grain-boundary misorientation on thermal groove geometry in ceramic polycrystals10.1111/j.1151-2916.1999.tb01951.x ↗
13. A thermal grooving study of relative grain boundary energies of nickel in polycrystalline Ni and in a Ni/YSZ anode measured by atomic force microscopy10.1016/j.actamat.2021.116936 ↗
14. A scanning force microscopy study of grain boundary energy in copper subjected to equal channel angular pressing10.1016/j.actamat.2007.08.023 ↗
15. Relative grain boundary energies in ultrafine grain Ni obtained by high pressure torsion10.1016/j.scriptamat.2020.03.008 ↗
16. The variation of the surface tension of nickel with crystallographic orientation10.1016/0001-6160(61)90160-2 ↗
17. Effects of surface anisotropy on grain boundary grooving10.1023/A:1011270830969 ↗
18. Grain-boundary grooving by surface diffusion with asymmetric and strongly anisotropic surface energies10.1063/1.2159082 ↗
19. Effect of faceting on the thermal grain-boundary grooving of tungsten
20. Surface morphologies due to grooves at moving grain boundaries having stress-driven fluxes10.1016/j.actamat.2013.08.026 ↗
21. A model of migrating grain-boundary grooves with application to two mobility-measurement methods10.1016/S1359-6454(02)00384-1 ↗
22. Jerky motion of grain boundaries in NiAl: An atomic force microscopy study10.1016/S1359-6462(99)00343-7 ↗
23. Experimental study to validate a model of hillock's formation in aluminum thin films10.1063/1.361408 ↗
24. Growth of electromigration-induced hillocks in Al interconnects10.1557/JMR.2002.0394 ↗
25. Hillock growth in thin films10.1063/1.1663054 ↗
26. Whisker and hillock growth via coupled localized Coble creep, grain boundary sliding, and shear induced grain boundary migration10.1016/j.actamat.2012.12.019 ↗
27. Numerical analysis of a three-dimensional radially symmetric grain attached to a free crystal surface10.1016/j.actamat.2006.01.038 ↗
28. Breakup and grain growth in thin-film array10.1063/1.363988 ↗
29. Scanning probe microscopy study of grain boundary migration in nial10.1016/j.actamat.2004.06.027 ↗
30. Grain boundary grooving in molybdenum bicrystals10.1007/s10853-006-0438-4 ↗
31. Ultra-fast diffusion channels in pure Ni severely deformed by equal-channel angular pressing10.1016/j.actamat.2010.11.063 ↗
32. The influence of grain boundary inclination on the structure and energy of Σ = 3 grain boundaries in copper10.1080/01418619208248003 ↗
33. Faceting transformation and energy of a Σ3 grain boundary in silver10.1016/0956-7151(95)00094-C ↗
34. The monitoring of grain-boundary grooves in alumina10.1080/09500830310001614487 ↗
35. Grain boundary ridge formation during initial high temperature oxidation of Mn/Al TRIP steel10.1080/14786430701324139 ↗
36. Grain growth inhibition in thin nanocrystalline Au films by grain boundary diffusion and oxidation of Ti10.1016/j.actamat.2012.09.076 ↗
37. Competing relaxation mechanisms in strained layers10.1103/PhysRevLett.72.3570 ↗
38. Atomistic simulation of hillock growth10.1016/j.actamat.2010.06.023 ↗
39. Influence of heat-treatment temperature and aluminum thickness on hillocks formation in thin aluminum films10.1016/0042-207X(90)90144-N ↗
40. Stress relief and hillock formation in thin lead films10.1063/1.1659383 ↗
41. A study of heating rate and texture influences on annealing hillocks by a statistical characterization of Al thin-film topography10.1063/1.342065 ↗
42. Grain rotation in thin films of gold10.1016/S1359-6454(97)00467-9 ↗
43. Mechanisms of solid-state dewetting of thin Au films in different annealing atmospheres10.1016/j.actamat.2014.09.049 ↗
44. Grain boundary grooving with simultaneous grain boundary sliding in Ni-rich NiAl10.1016/S1359-6454(01)00040-4 ↗
45. Plastic strain-induced grain boundary migration (SIBM) in pure aluminum: SEM in-situ and AFM examinations10.1016/j.ijplas.2018.11.007 ↗
46. Reconciling grain growth and shear-coupled grain boundary migration10.1038/s41467-017-01889-3 ↗
47. Hotspot volcanism and mantle plumes10.1146/annurev.ea.20.050192.000315 ↗
48. Grain growth in anisotropic bicrystal films10.1063/1.365214 ↗
49. The effect of strong surface energy anisotropy on migrating grain-boundary grooves
50. Surface self-diffusion and surface energy of nickel10.1063/1.1709399 ↗
51. Grain growth: the key to understand solid-state dewetting of silver thin films10.1016/j.scriptamat.2016.01.005 ↗
52. The dragging of small oxide particles by migrating grain boundaries in copper10.1016/0001-6160(68)90043-6 ↗