TY - JOUR
T1 - In Situ High-Energy X-Ray Diffraction Study of Load Partitioning in Nb/NiTi Nanocomposite Plate
AU - Yu, Cun
AU - Cui, Lishan
AU - Hao, Shijie
AU - Jiang, Daqiang
AU - Shi, Xiaobin
AU - Liu, Zhenyang
AU - Liu, Zunping
AU - Brown, Dennis E.
AU - Ren, Yang
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2015/7/26
Y1 - 2015/7/26
N2 - A nanocomposite composed of Nb nanosheets and NiTi shape memory alloy was fabricated by multiple cold rolling. High-energy X-ray diffraction measurements were performed to probe the deformation behavior of each component during uniaxial tensile loading at different temperatures. It is demonstrated that, as the samples were tested at 203 K (−70 °C) and 298 K (25 °C), the NiTi matrix exhibited a martensite reorientation and a stress-induced phase transformation, respectively, while the Nb nanosheets showed a higher elastic strain (~2.5 pct) in comparison to that (~0.9 pct) of a sample tested at a higher temperature of 453 K (180 °C). The Nb nanosheets, with a volume fraction of only 13 pct, undertake an applied stress of ~90 pct as the NiTi matrix undergoes the martensitic transformation. It appears that the strengthening of Nb nanosheets is optimized as the matrix deforms by a stress-induced phase transformation or by a martensite reorientation in nanocomposite.
AB - A nanocomposite composed of Nb nanosheets and NiTi shape memory alloy was fabricated by multiple cold rolling. High-energy X-ray diffraction measurements were performed to probe the deformation behavior of each component during uniaxial tensile loading at different temperatures. It is demonstrated that, as the samples were tested at 203 K (−70 °C) and 298 K (25 °C), the NiTi matrix exhibited a martensite reorientation and a stress-induced phase transformation, respectively, while the Nb nanosheets showed a higher elastic strain (~2.5 pct) in comparison to that (~0.9 pct) of a sample tested at a higher temperature of 453 K (180 °C). The Nb nanosheets, with a volume fraction of only 13 pct, undertake an applied stress of ~90 pct as the NiTi matrix undergoes the martensitic transformation. It appears that the strengthening of Nb nanosheets is optimized as the matrix deforms by a stress-induced phase transformation or by a martensite reorientation in nanocomposite.
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U2 - 10.1007/s11661-015-2816-5
DO - 10.1007/s11661-015-2816-5
M3 - RGC 21 - Publication in refereed journal
SN - 1073-5623
VL - 46
SP - 3271
EP - 3275
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 7
M1 - 2816
ER -