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Title: Large elastic strains and ductile necking of W nanowires embedded in TiNi matrix

Abstract

The deformation behaviors of W nanowires embedded in a TiNi matrix were investigated by means of in-situ synchrotron high energy X-ray diffraction (HEXRD) and in-situ transmission electron microscopy (TEM) analysis during tensile deformation. The HEXRD measurement indicated that the W nanowires exhibited an average lattice strain of about 1.50 %, whereas the TEM examination revealed a local elastic strain of about 4.59 % in areas adjacent to the TiNi matrix where stress-induced martensitic transformation occurred. This strain corresponds to a stress of ~15 GPa for the W nanowires. In addition, in areas adjacent to the TiNi matrix where plastic deformation and cracking were generated, the W nanowire showed significant ductile necking with ~80 % reduction in cross-section area. In conclusion, the ductile necking of W nanowire is attributed to the lack of protection from the stress-induced martensitic transformation of the TiNi matrix.

Authors:
 [1];  [1];  [2];  [2];  [1];  [3];  [4];  [1]
+ Show Author Affiliations
  1. China Univ. of Petroleum-Beijing, Changping (China)
  2. Univ. of Western Australia, Perth, WA (Australia)
  3. China Univ. of Petroleum-Beijing, Changping (China); China Univ. of Petroleum Beijing (China)
  4. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Australian Research Council
OSTI Identifier:
1784913
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Science and Technology
Additional Journal Information:
Journal Volume: 60; Journal ID: ISSN 1005-0302
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; In-situ TEM; Nanowire; elastic strain; tungsten

Citation Formats

Jiang, Daqiang, Jia, Zhenghao, Yang, Hong, Liu, Yinong, Liu, Fangfeng, Jiang, Xiaohua, Ren, Yang, and Cui, Lishan. Large elastic strains and ductile necking of W nanowires embedded in TiNi matrix. United States: N. p., 2020. Web. doi:10.1016/j.jmst.2020.04.058.
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Jiang, Daqiang, Jia, Zhenghao, Yang, Hong, Liu, Yinong, Liu, Fangfeng, Jiang, Xiaohua, Ren, Yang, & Cui, Lishan. Large elastic strains and ductile necking of W nanowires embedded in TiNi matrix. United States. https://doi.org/10.1016/j.jmst.2020.04.058
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Jiang, Daqiang, Jia, Zhenghao, Yang, Hong, Liu, Yinong, Liu, Fangfeng, Jiang, Xiaohua, Ren, Yang, and Cui, Lishan. Tue . "Large elastic strains and ductile necking of W nanowires embedded in TiNi matrix". United States. https://doi.org/10.1016/j.jmst.2020.04.058. https://www.osti.gov/servlets/purl/1784913.
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@article{osti_1784913,
title = {Large elastic strains and ductile necking of W nanowires embedded in TiNi matrix},
author = {Jiang, Daqiang and Jia, Zhenghao and Yang, Hong and Liu, Yinong and Liu, Fangfeng and Jiang, Xiaohua and Ren, Yang and Cui, Lishan},
abstractNote = {The deformation behaviors of W nanowires embedded in a TiNi matrix were investigated by means of in-situ synchrotron high energy X-ray diffraction (HEXRD) and in-situ transmission electron microscopy (TEM) analysis during tensile deformation. The HEXRD measurement indicated that the W nanowires exhibited an average lattice strain of about 1.50 %, whereas the TEM examination revealed a local elastic strain of about 4.59 % in areas adjacent to the TiNi matrix where stress-induced martensitic transformation occurred. This strain corresponds to a stress of ~15 GPa for the W nanowires. In addition, in areas adjacent to the TiNi matrix where plastic deformation and cracking were generated, the W nanowire showed significant ductile necking with ~80 % reduction in cross-section area. In conclusion, the ductile necking of W nanowire is attributed to the lack of protection from the stress-induced martensitic transformation of the TiNi matrix.},
doi = {10.1016/j.jmst.2020.04.058},
journal = {Journal of Materials Science and Technology},
number = ,
volume = 60,
place = {United States},
year = {Tue Jun 23 00:00:00 EDT 2020},
month = {Tue Jun 23 00:00:00 EDT 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1016/j.jmst.2020.04.058
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