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Title: Anomalous expansion of Nb nanowires in a NiTi matrix under high pressure

Abstract

Under high pressure, materials usually shrink during compression as described by an equation of state. Here, we present the anomalous volume expansion behavior of a one-dimensional Nb nanowire embedded in a NiTi transforming matrix, while the matrix undergoes a pressure-induced martensitic transformation. The Nb volume expansion depends on the NiTi transition pressure range from the matrix, which is controlled by the shear strain induced by different pressure transmitting media. The transformation-induced interfacial stresses between Nb and NiTi may play a major role in this anomaly. In conclusion, our discovery sheds new light on the nano-interfacial effect on mechanical anomalies in heterogeneous systems during a pressure-induced phase transition.

Authors:
ORCiD logo [1];  [2];  [3];  [3];  [4]
  1. China Univ. of Petroleum-Beijing, Beijing (China); Chinese Academy of Sciences (CAS), Shanghai (China)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. China Univ. of Petroleum-Beijing, Beijing (China)
  4. Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (People's Republic of China); Carnegie Inst. of Washington, Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NNSFC); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Scientific User Facilities Division
OSTI Identifier:
1389048
Alternate Identifier(s):
OSTI ID: 1420536
Grant/Contract Number:  
AC02-06CH11357; FG02-94ER14466; FG02-99ER45775; NA0001974; EAR-1128799
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 109; Journal Issue: 16; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Yu, Cun, Ren, Yang, Cui, Lishan, Ma, Zhiyuan, and Yang, Wenge. Anomalous expansion of Nb nanowires in a NiTi matrix under high pressure. United States: N. p., 2016. Web. doi:10.1063/1.4965117.
Yu, Cun, Ren, Yang, Cui, Lishan, Ma, Zhiyuan, & Yang, Wenge. Anomalous expansion of Nb nanowires in a NiTi matrix under high pressure. United States. doi:10.1063/1.4965117.
Yu, Cun, Ren, Yang, Cui, Lishan, Ma, Zhiyuan, and Yang, Wenge. Mon . "Anomalous expansion of Nb nanowires in a NiTi matrix under high pressure". United States. doi:10.1063/1.4965117. https://www.osti.gov/servlets/purl/1389048.
@article{osti_1389048,
title = {Anomalous expansion of Nb nanowires in a NiTi matrix under high pressure},
author = {Yu, Cun and Ren, Yang and Cui, Lishan and Ma, Zhiyuan and Yang, Wenge},
abstractNote = {Under high pressure, materials usually shrink during compression as described by an equation of state. Here, we present the anomalous volume expansion behavior of a one-dimensional Nb nanowire embedded in a NiTi transforming matrix, while the matrix undergoes a pressure-induced martensitic transformation. The Nb volume expansion depends on the NiTi transition pressure range from the matrix, which is controlled by the shear strain induced by different pressure transmitting media. The transformation-induced interfacial stresses between Nb and NiTi may play a major role in this anomaly. In conclusion, our discovery sheds new light on the nano-interfacial effect on mechanical anomalies in heterogeneous systems during a pressure-induced phase transition.},
doi = {10.1063/1.4965117},
journal = {Applied Physics Letters},
number = 16,
volume = 109,
place = {United States},
year = {2016},
month = {10}
}

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