Deformation of small-volume Al-4Cu alloy under electron beam irradiation
Source abstract
Abstract
Abstract Energetic electron beams (e-beams) are used in the welding, 3D printing and imaging of various materials. It is commonly accepted that the e-beam irradiation inside transmission electron microscope has a negligible effect on the intrinsic mechanical properties of small-volume metallic materials during in situ investigation. However, as small-volume Al is usually covered by a thin layer of native oxide, we show here that high-energy (200 keV) e-beam irradiation can dramatically alter the deformation behavior. E-beam irradiation can drastically rejuvenate the amorphous structure of the oxide layer, producing a defective interface/surface, and promoting the transition of the deformation mode from internal dislocation multiplication to interface-dominated dislocation nucleation mediated plasticity, as indicated by the enhanced strain rate sensitivity and reduced activation volume. Moreover, the amorphous oxide layer undergoes viscous flow under the e-beam irradiation, such that nanoscale single-crystal Al confined by a 29% volume fraction of native oxide shell exhibits more than 60% uniform elongation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ion-surface interactions and analysis · Microstructure and mechanical properties · Fusion materials and technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (58)
Show source-provided references
1. Sample dimensions influence strength and crystal plasticity10.1126/science.1098993 ↗
2. Size dependence of mechanical properties of gold at the micro scale in the absence of strain gradients10.1016/j.actamat.2004.12.031 ↗
3. Plasticity in small-sized metallic systems: intrinsic versus extrinsic size effect10.1016/j.pmatsci.2011.01.005 ↗
4. Stochastic nature of plasticity of aluminum micro-pillars10.1016/j.actamat.2007.12.016 ↗
5. Mechanical annealing and source-limited deformation on submicrometer-diameter Ni crystals10.1038/nmat2085 ↗
6. In situ observation of dislocation nucleation and escape in a submicrometer aluminum single crystal10.1038/nmat2370 ↗
7. A new regime for mechanical annealing and strong sample-size strengthening in body centred cubic molybdenum10.1038/ncomms1557 ↗
8. Sample size effects on the large strain bursts in submicro aluminum pillars
9. Radiation-induced helium nanobubbles enhance ductility in submicro-sized single-crystalline copper10.1021/acs.nanolett.6b00864 ↗
10. Radiation damage in the TEM and SEM10.1016/j.micron.2004.02.003 ↗
11. Basic questions related to electron-induced sputtering in the TEM10.1016/j.ultramic.2009.11.003 ↗
12. Control of radiation damage in the TEM10.1016/j.ultramic.2012.07.006 ↗
13. Effect of electron beam irradiation on the thin metal films on glass surfaces in a submicrometer scale10.1117/1.JMM.15.1.013502 ↗
14. Electron-beam-enhanced flow and instability in amorphous silica fibers and tips10.1080/09500839208215146 ↗
15. Electron-beam-assisted superplastic shaping of nanoscale amorphous silica10.1038/ncomms1021 ↗
16. Beam-assisted large elongation of in situ formed Li2O nanowires10.1038/srep00542 ↗
17. Electron beam irradiation stiffens zinc tin oxide nanowires10.1021/nl2027519 ↗
18. Strong strain rate effect on the plasticity of amorphous silica nanowires10.1063/1.4882420 ↗
19. Size-dependent brittle-to-ductile transition in silica glass nanofiber10.1021/acs.nanolett.5b03070 ↗
20. Electron beam induced artifacts during in situ TEM deformation of nanostructured metals10.1038/srep16345 ↗
21. Overview no. 49: on the mechanisms for the electroplastic effect in metals10.1016/0001-6160(86)90001-5 ↗
22. Small-volume aluminum alloys with native oxide shell deliver unprecedented strength and toughness10.1016/j.actamat.2016.12.055 ↗
23. Oxidation-assisted ductility of aluminum nanowires10.1038/ncomms4959 ↗
24. Oxidation induced softening in Al nanowires10.1063/1.4790181 ↗
25. Al-Al2O3 interface study using surface soft-x-ray absorption and photoemission spectroscopy10.1103/PhysRevB.19.2837 ↗
26. In situ study of the initiation of hydrogen bubbles at the aluminum metal/oxide interface10.1038/nmat4336 ↗
27. Effect of hydrogen on the integrity of aluminum-oxide interface at elevated temperatures10.1038/ncomms14564 ↗
28. Source-based strengthening of sub-micrometer Al fibers10.1016/j.actamat.2011.11.005 ↗
29. From “smaller is stronger” to “size-independent strength plateau”: towards measuring the ideal strength of iron10.1002/adma.201500377 ↗
30. On the reversibility of dislocation slip during cyclic deformation of Al alloys containing shear-resistant particles10.1016/j.actamat.2011.03.007 ↗
31. On the strengthening response of aluminum alloys containing shear-resistant plate-shaped precipitates10.1016/j.actamat.2008.08.023 ↗
32. Nanobubble fragmentation and bubble-free-channel shear localization in helium-irradiated submicron-sized copper10.1103/PhysRevLett.117.215501 ↗
33. Strain rate sensitivity of ultrafine-grained aluminum processed by severe plastic deformation10.1016/j.scriptamat.2005.03.043 ↗
34. Increased strain rate sensitivity due to stress-coupled grain growth in nanocrystalline Al10.1016/j.scriptamat.2006.06.002 ↗
35. Activation parameters for deformation of ultrafine-grained aluminum as determined by indentation strain rate jumps at elevated temperature10.1016/j.msea.2013.07.033 ↗
36. Texture dependent strain rate sensitivity of ultrafine-grained aluminum films10.1016/j.scriptamat.2015.12.003 ↗
37. Strain rate sensitivity of ultra-fine and nanocrystalline metals and alloys10.1016/j.physb.2007.09.075 ↗
38. Hardness and strain rate sensitivity of nanocrystalline Cu10.1016/j.scriptamat.2006.02.022 ↗
39. Effect of nanocrystalline and ultrafine grain sizes on the strain rate sensitivity and activation volume: fcc versus bcc metals10.1016/j.msea.2004.03.064 ↗
40. Flow stress in submicron BCC iron single crystals: sample-size-dependent strain-rate sensitivity and rate-dependent size strengthening10.1080/21663831.2014.999953 ↗
41. Emergence of strain-rate sensitivity in Cu nanopillars: transition from dislocation multiplication to dislocation nucleation10.1016/j.actamat.2011.05.038 ↗
42. Mechanistic models for the activation volume and rate sensitivity in metals with nanocrystalline grains and nano-scale twins10.1016/j.actamat.2005.03.047 ↗
43. Nano-sized twins induce high rate sensitivity of flow stress in pure copper10.1016/j.actamat.2005.01.031 ↗
44. Strength, strain-rate sensitivity and ductility of copper with nanoscale twins10.1016/j.actamat.2006.06.062 ↗
45. Strain rate effects on the mechanical response in the multi-and single-crystalline Cu micropillars: grain boundary effects10.1016/j.ijplas.2013.03.009 ↗
46. Strain rate sensitivity of a closed-cell aluminum foam10.1016/S0921-5093(99)00750-9 ↗
47. Temperature-dependent strain rate sensitivity and activation volume of nanocrystalline Ni10.1016/j.actamat.2006.02.013 ↗
48. Liquid-like pseudoelasticity of sub-10-nm crystalline silver particles10.1038/nmat4105 ↗
49. Superelongation and atomic chain formation in nanosized metallic glass10.1103/PhysRevLett.104.215503 ↗
50. Nanometer-scale modification and welding of silicon and metallic nanowires with a high-intensity electron beam10.1002/smll.200500240 ↗
51. The ESTAR program: stopping-power and range tables for electrons. http://physics.nist.gov/PhysRefData/Star/Text/ESTAR.html.
52. Thermal conductance of interfaces between highly dissimilar materials10.1103/PhysRevB.73.144301 ↗
53. Recent development in contact conductance heat transfer10.1115/1.3250610 ↗
54. Temperature and strain-rate dependence of surface dislocation nucleation10.1103/PhysRevLett.100.025502 ↗
55. In situ observation of dislocation nucleation and escape in a submicrometre aluminum single crystal10.1038/nmat2370 ↗
56. Cold welding of ultrathin gold nanowires10.1038/nnano.2010.4 ↗
57. Discrete plasticity in sub-10-nm-sized gold crystals10.1038/ncomms1149 ↗
58. A unified mechanistic model for size-dependent deformation in nanocrystalline and nanotwinned metals10.1016/j.actamat.2011.07.019 ↗