A nano lamella NbTi-NiTi composite with high strength

Jiang Jiang; Daqiang Jiang; Shijie Hao; Cun Yu; Junsong Zhang; Yang Ren; Deping Lu; Shifang Xie; Lishan Cui

doi:10.1016/j.msea.2015.03.010

A nano lamella NbTi-NiTi composite with high strength

Jiang Jiang, Daqiang Jiang, Shijie Hao, Cun Yu, Junsong Zhang, Yang Ren, Deping Lu, Shifang Xie, Lishan Cui^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

14 Citations (Scopus)

Abstract

A hypereutectic Nb₆₀Ti₂₄Ni₁₆ (at%) alloy was prepared by vacuum induction melting, and a nano lamellae NbTi-NiTi composite was obtained by hot-forging and wire-drawing of the ingot. Microscopic analysis showed that NbTi and NiTi nano lamellae distributed alternatively in the composite, and aligned along the wire axial direction, with a high volume fraction (~70%) of NbTi nano lamellae. In situ synchrotron X-ray diffraction analysis revealed that stress induced martensitic transformation occurred upon loading, which would effectively weaken the stress concentration at the interface and avoid the introduction of defects into the nano reinforced phase. Then the embedded NbTi nano lamellae exhibited a high elastic strain up to 2.72%, 1.5 times as high as that of the Nb nanowires embedded in a conventional plastic matrix, and the corresponding stress carried by NbTi was evaluated as 2.53GPa. The high volume fraction of NbTi nano lamellae improved the translation of high strength from the nano reinforced phase into bulk properties of the composite, with a platform stress of ~1.7GPa and a fracture strength of ~1.9GPa.

Original language	English
Pages (from-to)	121-124
Journal	Materials Science and Engineering A
Volume	633
DOIs	https://doi.org/10.1016/j.msea.2015.03.010
Publication status	Published - 1 May 2015
Externally published	Yes

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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].

Research Keywords

In situ synchrotron X-ray diffraction
Martensitic transformation
Nano lamellae composite
NiTi
Shape memory alloy (SMA)

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10.1016/j.msea.2015.03.010

https://www.sciencedirect.com/science/article/am/pii/S0921509315002294

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title = "A nano lamella NbTi-NiTi composite with high strength",

abstract = "A hypereutectic Nb60Ti24Ni16 (at%) alloy was prepared by vacuum induction melting, and a nano lamellae NbTi-NiTi composite was obtained by hot-forging and wire-drawing of the ingot. Microscopic analysis showed that NbTi and NiTi nano lamellae distributed alternatively in the composite, and aligned along the wire axial direction, with a high volume fraction (~70%) of NbTi nano lamellae. In situ synchrotron X-ray diffraction analysis revealed that stress induced martensitic transformation occurred upon loading, which would effectively weaken the stress concentration at the interface and avoid the introduction of defects into the nano reinforced phase. Then the embedded NbTi nano lamellae exhibited a high elastic strain up to 2.72%, 1.5 times as high as that of the Nb nanowires embedded in a conventional plastic matrix, and the corresponding stress carried by NbTi was evaluated as 2.53GPa. The high volume fraction of NbTi nano lamellae improved the translation of high strength from the nano reinforced phase into bulk properties of the composite, with a platform stress of ~1.7GPa and a fracture strength of ~1.9GPa.",

keywords = "In situ synchrotron X-ray diffraction, Martensitic transformation, Nano lamellae composite, NiTi, Shape memory alloy (SMA)",

author = "Jiang Jiang and Daqiang Jiang and Shijie Hao and Cun Yu and Junsong Zhang and Yang Ren and Deping Lu and Shifang Xie and Lishan Cui",

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T1 - A nano lamella NbTi-NiTi composite with high strength

AU - Jiang, Jiang

AU - Jiang, Daqiang

AU - Hao, Shijie

AU - Yu, Cun

AU - Zhang, Junsong

AU - Ren, Yang

AU - Lu, Deping

AU - Xie, Shifang

AU - Cui, Lishan

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 - 2015/5/1

Y1 - 2015/5/1

N2 - A hypereutectic Nb60Ti24Ni16 (at%) alloy was prepared by vacuum induction melting, and a nano lamellae NbTi-NiTi composite was obtained by hot-forging and wire-drawing of the ingot. Microscopic analysis showed that NbTi and NiTi nano lamellae distributed alternatively in the composite, and aligned along the wire axial direction, with a high volume fraction (~70%) of NbTi nano lamellae. In situ synchrotron X-ray diffraction analysis revealed that stress induced martensitic transformation occurred upon loading, which would effectively weaken the stress concentration at the interface and avoid the introduction of defects into the nano reinforced phase. Then the embedded NbTi nano lamellae exhibited a high elastic strain up to 2.72%, 1.5 times as high as that of the Nb nanowires embedded in a conventional plastic matrix, and the corresponding stress carried by NbTi was evaluated as 2.53GPa. The high volume fraction of NbTi nano lamellae improved the translation of high strength from the nano reinforced phase into bulk properties of the composite, with a platform stress of ~1.7GPa and a fracture strength of ~1.9GPa.

AB - A hypereutectic Nb60Ti24Ni16 (at%) alloy was prepared by vacuum induction melting, and a nano lamellae NbTi-NiTi composite was obtained by hot-forging and wire-drawing of the ingot. Microscopic analysis showed that NbTi and NiTi nano lamellae distributed alternatively in the composite, and aligned along the wire axial direction, with a high volume fraction (~70%) of NbTi nano lamellae. In situ synchrotron X-ray diffraction analysis revealed that stress induced martensitic transformation occurred upon loading, which would effectively weaken the stress concentration at the interface and avoid the introduction of defects into the nano reinforced phase. Then the embedded NbTi nano lamellae exhibited a high elastic strain up to 2.72%, 1.5 times as high as that of the Nb nanowires embedded in a conventional plastic matrix, and the corresponding stress carried by NbTi was evaluated as 2.53GPa. The high volume fraction of NbTi nano lamellae improved the translation of high strength from the nano reinforced phase into bulk properties of the composite, with a platform stress of ~1.7GPa and a fracture strength of ~1.9GPa.

KW - In situ synchrotron X-ray diffraction

KW - Martensitic transformation

KW - Nano lamellae composite

KW - NiTi

KW - Shape memory alloy (SMA)

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DO - 10.1016/j.msea.2015.03.010

M3 - RGC 21 - Publication in refereed journal

SN - 0921-5093

VL - 633

SP - 121

EP - 124

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

ER -

A nano lamella NbTi-NiTi composite with high strength

Abstract

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