Room-temperature superplasticity in Au nanowires and their atomistic mechanisms
Source abstract
Abstract
We report experimental observation of room-temperature superplasticity and the distinct nanosize effect on the deformation mechanisms of Au nanowires. The Au nanowires were subjected to in situ tensile straining in a transmission electron microscope by using a home-made strain actuator, and a super large plastic strain with ∼150% uniform elongation and ∼260% total strain were observed before fracture. The plastic deformation started through full dislocation slip and was followed by the activities of stacking fault ribbons (or dissociated full dislocations) that were generated from surface sources and disappeared at the other end surfaces. With the reduction of the diameter of Au nanowires, the deformation changed to the twinning mode through partial dislocation emissions from sample surfaces. The mechanisms behind the observed phenomena are discussed in detail. These results shed light on the size-controlled plasticity of nano-metals.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microstructure and mechanical properties · Surface and Thin Film Phenomena · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming
School of Materials Science and Engineering
Shanghai Jiao Tong University
Shanghai 200240
China
Institute of Microstructure and Properties of Advanced Materials
Beijing University of Technology
Beijing
Beijing Key Laboratory of Bio-Inspired Energy Materials and Devices
School of Chemistry and Environment
Beihang University
Beijing 100191
School of Aerospace
Mechanical and Mechatronic Engineering
The University of Sydney
Sydney
Australia
Department of Materials Science
Funding
National Natural Science Foundation of China · Ministry of Science and Technology of the People's Republic of China · Johns Hopkins University
References (42)
Show source-provided references
1. Lu · Science · 2000 · 287 · 146310.1126/science.287.5457.1463 ↗
2. Huang · Nature · 2006 · 439 · 28110.1038/439281a ↗
3. Moore · Nano Lett. · 2009 · 9 · 229510.1021/nl9004805 ↗
4. Wang · Sci. Adv. · 2018 · 4 · eaas885010.1126/sciadv.aas8850 ↗
5. Zhong · Nat. Mater. · 2017 · 16 · 43910.1038/nmat4813 ↗
6. Zheng · Nat. Commun. · 2010 · 1 · 2410.1038/ncomms1021 ↗
7. Nandan · Prog. Mater. Sci. · 2008 · 53 · 98010.1016/j.pmatsci.2008.05.001 ↗
8. Thomas · Mater. Des. · 1997 · 18 · 26910.1016/S0261-3069(97)00062-9 ↗
9. Greer · Prog. Mater. Sci. · 2011 · 56 · 65410.1016/j.pmatsci.2011.01.005 ↗
10. Fang · Science · 2011 · 331 · 158710.1126/science.1200177 ↗
11. Zhu · Prog. Mater. Sci. · 2010 · 55 · 71010.1016/j.pmatsci.2010.04.001 ↗
12. Weinberger · J. Mater. Chem. · 2012 · 22 · 327710.1039/c2jm13682a ↗
13. Cao · Adv. Funct. Mater. · 2018 · 28 · 180525810.1002/adfm.201805258 ↗
14. Greer · Acta Mater. · 2005 · 53 · 182110.1016/j.actamat.2004.12.031 ↗
15. Lee · Nat. Commun. · 2014 · 5 · 303310.1038/ncomms4033 ↗
16. Yue · Nano Lett. · 2011 · 11 · 315110.1021/nl201233u ↗
17. Oh · Nat. Mater. · 2009 · 8 · 9510.1038/nmat2370 ↗
18. Kiener · Nano Lett. · 2011 · 11 · 381610.1021/nl201890s ↗
19. Shan · Nat. Mater. · 2008 · 7 · 11510.1038/nmat2085 ↗
20. Seo · Nano Lett. · 2010 · 11 · 349910.1021/nl2022306 ↗
21. Rao · Philos. Mag. · 2007 · 87 · 477710.1080/14786430701591513 ↗
22. Wang · Nat. Commun. · 2013 · 4 · 241310.1038/ncomms3413 ↗
23. Liu · Acta Mater. · 2019 · 165 · 9910.1016/j.actamat.2018.11.022 ↗
24. Liu · Scr. Mater. · 2011 · 64 · 34310.1016/j.scriptamat.2010.10.029 ↗
25. Lu · Adv. Funct. Mater. · 2011 · 21 · 39823989
26. Cao · Phys. Rev. B: Condens. Matter Mater. Phys. · 2008 · 77 · 19542910.1103/PhysRevB.77.195429 ↗
27. Richter · Nano Lett. · 2009 · 9 · 304810.1021/nl9015107 ↗
28. Ganesan · J. Microelectromech. Syst · 2010 · 19 · 67510.1109/JMEMS.2010.2046014 ↗
29. Hwang · Nanoscale · 2015 · 7 · 1565710.1039/C5NR03902A ↗
30. Wu · Nat. Mater. · 2005 · 4 · 52510.1038/nmat1403 ↗
31. Zheng · Nat. Commun. · 2010 · 1 · 14410.1038/ncomms1149 ↗
32. J. J. Gilman , Micromechanics of Flow in Solids , McGraw-Hill , 1969
33. J. P. Hirth and J.Lothe , Theory of Dislocations , Wiley , New York , 1982
34. Whelan · Proc. R. Soc. A · 1957 · 240 · 52410.1098/rspa.1957.0105 ↗
35. Liao · Appl. Phys. Lett. · 2004 · 84 · 356410.1063/1.1734689 ↗
36. Margulies · Science · 2001 · 291 · 239210.1126/science.1057956 ↗
37. Yue · Nano Lett. · 2012 · 12 · 404510.1021/nl3014132 ↗
38. Zhu · Prog. Mater. Sci. · 2012 · 57 · 110.1016/j.pmatsci.2011.05.001 ↗
39. Mukherjee · Annu. Rev. Mater. Sci. · 1979 · 9 · 19110.1146/annurev.ms.09.080179.001203 ↗
40. Chokshi · Mater. Sci. Eng., R · 1993 · 10 · 23710.1016/0927-796X(93)90009-R ↗
41. Wang · Nat. Commun. · 2013 · 4 · 234010.1038/ncomms3340 ↗
42. Ji · Appl. Phys. Lett. · 2006 · 89 · 18191610.1063/1.2372748 ↗