TY - JOUR
T1 - Anomalous expansion of Nb nanowires in a NiTi matrix under high pressure
AU - Yu, Cun
AU - Ren, Yang
AU - Cui, Lishan
AU - Ma, Zhiyuan
AU - Yang, Wenge
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 - 2016/10/17
Y1 - 2016/10/17
N2 - 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 nano-wire 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. Our discovery sheds new light on the nano-interfacial effect on mechanical anomalies in heterogeneous systems during a pressure-induced phase transition.
AB - 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 nano-wire 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. Our discovery sheds new light on the nano-interfacial effect on mechanical anomalies in heterogeneous systems during a pressure-induced phase transition.
UR - http://www.scopus.com/inward/record.url?scp=84992036790&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84992036790&origin=recordpage
U2 - 10.1063/1.4965117
DO - 10.1063/1.4965117
M3 - RGC 21 - Publication in refereed journal
SN - 0003-6951
VL - 109
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 16
M1 - 161903
ER -