|
1
|
Han WZ, Zhang J, Ding MS, Lv L, Wang WH, Wu GH, Shan ZW, Li J. Helium Nanobubbles Enhance Superelasticity and Retard Shear Localization in Small-Volume Shape Memory Alloy. NANO LETTERS 2017; 17:3725-3730. [PMID: 28489391 DOI: 10.1021/acs.nanolett.7b01015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The intriguing phenomenon of metal superelasticity relies on stress-induced martensitic transformation (SIMT), which is well-known to be governed by developing cooperative strain accommodation at multiple length scales. It is therefore scientifically interesting to see what happens when this natural length scale hierarchy is disrupted. One method is producing pillars that confine the sample volume to micrometer length scale. Here we apply yet another intervention, helium nanobubbles injection, which produces porosity on the order of several nanometers. While the pillar confinement suppresses superelasticity, we found the dispersion of 5-10 nm helium nanobubbles do the opposite of promoting superelasticity in a Ni53.5Fe19.5Ga27 shape memory alloy. The role of helium nanobubbles in modulating the competition between ordinary dislocation slip plasticity and SIMT is discussed.
Collapse
Affiliation(s)
- Wei-Zhong Han
- Center for Advancing Materials Performance from the Nanoscale and Hysitron Applied Research Center in China, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, People's Republic of China
| | - Jian Zhang
- College of Energy, Xiamen University , Xiamen 361005, People's Republic of China
| | - Ming-Shuai Ding
- Center for Advancing Materials Performance from the Nanoscale and Hysitron Applied Research Center in China, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, People's Republic of China
| | - Lan Lv
- Center for Advancing Materials Performance from the Nanoscale and Hysitron Applied Research Center in China, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, People's Republic of China
| | - Wen-Hong Wang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing, 100190, People's Republic of China
| | - Guang-Heng Wu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences , Beijing, 100190, People's Republic of China
| | - Zhi-Wei Shan
- Center for Advancing Materials Performance from the Nanoscale and Hysitron Applied Research Center in China, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, People's Republic of China
| | - Ju Li
- Center for Advancing Materials Performance from the Nanoscale and Hysitron Applied Research Center in China, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, People's Republic of China
- Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| |
Collapse
|
|
2
|
Fan Y, Iwashita T, Egami T. Crossover from Localized to Cascade Relaxations in Metallic Glasses. PHYSICAL REVIEW LETTERS 2015; 115:045501. [PMID: 26252694 DOI: 10.1103/physrevlett.115.045501] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Indexed: 06/04/2023]
Abstract
Thermally activated deformation is investigated in two metallic glass systems with different cooling histories. By probing the atomic displacements and stress changes on the potential energy landscape, two deformation modes, a localized process and cascade process, have observed. The localized deformation involves fewer than 30 atoms and appears in both systems, and its size is invariant with cooling history. However, the cascade deformation is more frequently observed in the fast quenched system than in the slowly quenched system. The origin of the cascade process in the fast quenched system is attributed to the higher density of local minima on the underlying potential energy landscape.
Collapse
Affiliation(s)
- Yue Fan
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Takuya Iwashita
- Department of Physics and Astronomy, Joint Institute for Neutron Sciences, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Takeshi Egami
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Department of Physics and Astronomy, Joint Institute for Neutron Sciences, University of Tennessee, Knoxville, Tennessee 37996, USA
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| |
Collapse
|
|
3
|
Fan Y, Iwashita T, Egami T. How thermally activated deformation starts in metallic glass. Nat Commun 2014; 5:5083. [DOI: 10.1038/ncomms6083] [Citation(s) in RCA: 143] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 08/27/2014] [Indexed: 11/09/2022] Open
|
|
4
|
Mi L, Chen Y, Zheng Z, Hou H, Chen W, Cui S. Beneficial metal ion insertion into dandelion-like MnS with enhanced catalytic performance and genetic morphology. RSC Adv 2014. [DOI: 10.1039/c4ra00961d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Large-scale novel hierarchical dandelion-like MnS was successfully synthesized with manganese complex as a template under mild reaction conditions.
Collapse
Affiliation(s)
- Liwei Mi
- Center For Advanced Functional Materials Research
- Zhongyuan University of Technology
- , P. R. China
- Key Laboratory for Micro-Nano Energy Storage and Conversion Materials of Henan Province
- Institute of Surface Micro and Nano Materials
| | - Yuanfang Chen
- Department of Chemistry
- Zhengzhou University
- , P. R. China
| | - Zhi Zheng
- Key Laboratory for Micro-Nano Energy Storage and Conversion Materials of Henan Province
- Institute of Surface Micro and Nano Materials
- Xuchang University
- , P. R. China
| | - Hongwei Hou
- Department of Chemistry
- Zhengzhou University
- , P. R. China
| | - Weihua Chen
- Department of Chemistry
- Zhengzhou University
- , P. R. China
| | - Shizhong Cui
- Center For Advanced Functional Materials Research
- Zhongyuan University of Technology
- , P. R. China
| |
Collapse
|