Improving the damping capacity of NiTiHf alloys with nanoscale spherical Nb phases

Siwen Zhang; Quan Li; Yan Xu; Meimei Wang; Guangfa Huang; Mingjiang Jin; Yuntian Zhu; Weijie Lu

doi:10.1016/j.jmst.2025.02.023

Improving the damping capacity of NiTiHf alloys with nanoscale spherical Nb phases

Siwen Zhang
, Quan Li^*
, Yan Xu
, Meimei Wang
, Guangfa Huang^*
, Mingjiang Jin^*
, Yuntian Zhu
, Weijie Lu

^*Corresponding author for this work

Department of Materials Science and Engineering

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

3 Citations (Scopus)

Abstract

Shape memory alloys (SMAs) are well-suited for vibration and noise reduction due to their outstanding mechanical and damping properties. However, their damping capacity is limited due to low-temperature stabilized thermoelastic martensite and constrained twin migration. This work designs nanoscale Nb phases to enhance the damping capacity and maintain a wide working temperature range of NiTiHf-based SMAs. The NiTiHf/Nb alloys containing spherical Nb phases demonstrate a 125 % improvement in internal friction (IF) and remain stable up to 400 K. Alloys with spherical Nb phases exhibit relatively high intrinsic IF, which is mainly attibuted to the high migration ability of martensitic twin boundaries. High-resolution transmission electron microscopy images and IF spectra suggest spherical Nb phases provide additional dislocation damping effects and interface damping effects by inducing multiple types of dislocations near the multi-directional phase interfaces. These findings provide insights into the role of second-phase shape effect in damping properties and offer valuable guidance for designing ultra-high damping alloys. © 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

Original language	English
Pages (from-to)	310-316
Journal	Journal of Materials Science & Technology
Volume	236
Online published	17 Mar 2025
DOIs	https://doi.org/10.1016/j.jmst.2025.02.023
Publication status	Published - 20 Nov 2025

Funding

This work was supported by the National Natural Science Foundation of China (Grant No. 52471160). The authors thank Shanghai TiYi Technology Co. Ltd. for providing the necessary equipment and resources for this work. The authors thank Prof. Zhaoxuan Wu from City University of Hong Kong for the insightful discussion. The authors also thank Prof. Na Min from Shanghai University for TEM characterization. Quan Li acknowledges the support from the Outstanding Doctoral Graduated Development Scholarship of Shanghai Jiao Tong University.

Research Keywords

Damping
High-temperature shape memory alloys
Morphology effect
Nanoscale Nb phase

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COPYRIGHT TERMS OF DEPOSITED POSTPRINT FILE: © 2025 Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/.

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title = "Improving the damping capacity of NiTiHf alloys with nanoscale spherical Nb phases",

abstract = "Shape memory alloys (SMAs) are well-suited for vibration and noise reduction due to their outstanding mechanical and damping properties. However, their damping capacity is limited due to low-temperature stabilized thermoelastic martensite and constrained twin migration. This work designs nanoscale Nb phases to enhance the damping capacity and maintain a wide working temperature range of NiTiHf-based SMAs. The NiTiHf/Nb alloys containing spherical Nb phases demonstrate a 125 \% improvement in internal friction (IF) and remain stable up to 400 K. Alloys with spherical Nb phases exhibit relatively high intrinsic IF, which is mainly attibuted to the high migration ability of martensitic twin boundaries. High-resolution transmission electron microscopy images and IF spectra suggest spherical Nb phases provide additional dislocation damping effects and interface damping effects by inducing multiple types of dislocations near the multi-directional phase interfaces. These findings provide insights into the role of second-phase shape effect in damping properties and offer valuable guidance for designing ultra-high damping alloys. {\textcopyright} 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science \& Technology.",

keywords = "Damping, High-temperature shape memory alloys, Morphology effect, Nanoscale Nb phase",

author = "Siwen Zhang and Quan Li and Yan Xu and Meimei Wang and Guangfa Huang and Mingjiang Jin and Yuntian Zhu and Weijie Lu",

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doi = "10.1016/j.jmst.2025.02.023",

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T1 - Improving the damping capacity of NiTiHf alloys with nanoscale spherical Nb phases

AU - Zhang, Siwen

AU - Li, Quan

AU - Xu, Yan

AU - Wang, Meimei

AU - Huang, Guangfa

AU - Jin, Mingjiang

AU - Zhu, Yuntian

AU - Lu, Weijie

PY - 2025/11/20

Y1 - 2025/11/20

N2 - Shape memory alloys (SMAs) are well-suited for vibration and noise reduction due to their outstanding mechanical and damping properties. However, their damping capacity is limited due to low-temperature stabilized thermoelastic martensite and constrained twin migration. This work designs nanoscale Nb phases to enhance the damping capacity and maintain a wide working temperature range of NiTiHf-based SMAs. The NiTiHf/Nb alloys containing spherical Nb phases demonstrate a 125 % improvement in internal friction (IF) and remain stable up to 400 K. Alloys with spherical Nb phases exhibit relatively high intrinsic IF, which is mainly attibuted to the high migration ability of martensitic twin boundaries. High-resolution transmission electron microscopy images and IF spectra suggest spherical Nb phases provide additional dislocation damping effects and interface damping effects by inducing multiple types of dislocations near the multi-directional phase interfaces. These findings provide insights into the role of second-phase shape effect in damping properties and offer valuable guidance for designing ultra-high damping alloys. © 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

AB - Shape memory alloys (SMAs) are well-suited for vibration and noise reduction due to their outstanding mechanical and damping properties. However, their damping capacity is limited due to low-temperature stabilized thermoelastic martensite and constrained twin migration. This work designs nanoscale Nb phases to enhance the damping capacity and maintain a wide working temperature range of NiTiHf-based SMAs. The NiTiHf/Nb alloys containing spherical Nb phases demonstrate a 125 % improvement in internal friction (IF) and remain stable up to 400 K. Alloys with spherical Nb phases exhibit relatively high intrinsic IF, which is mainly attibuted to the high migration ability of martensitic twin boundaries. High-resolution transmission electron microscopy images and IF spectra suggest spherical Nb phases provide additional dislocation damping effects and interface damping effects by inducing multiple types of dislocations near the multi-directional phase interfaces. These findings provide insights into the role of second-phase shape effect in damping properties and offer valuable guidance for designing ultra-high damping alloys. © 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

KW - Damping

KW - High-temperature shape memory alloys

KW - Morphology effect

KW - Nanoscale Nb phase

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U2 - 10.1016/j.jmst.2025.02.023

DO - 10.1016/j.jmst.2025.02.023

M3 - RGC 21 - Publication in refereed journal

SN - 1005-0302

VL - 236

SP - 310

EP - 316

JO - Journal of Materials Science & Technology

JF - Journal of Materials Science & Technology

ER -

Improving the damping capacity of NiTiHf alloys with nanoscale spherical Nb phases

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Research Keywords

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