Strain rate effects on deformation and martensitic transformation in NiTi alloys fabricated by additive manufacturing under quasi-static tension

Pengyue Gao; Jianzhou Huang; Zhen Zhang; Dongdong He; Qisheng Feng; Zhichao Yu; Rulin Zhang; Xueliang Kang; Guangyao Chen; Caijuan Shi; Yang Ren; Huiping Ren; Chonghe Li

doi:10.1016/j.jmrt.2025.10.203

Strain rate effects on deformation and martensitic transformation in NiTi alloys fabricated by additive manufacturing under quasi-static tension

Pengyue Gao
, Jianzhou Huang
, Zhen Zhang
, Dongdong He
, Qisheng Feng
, Zhichao Yu
, Rulin Zhang^*
, Xueliang Kang
, Guangyao Chen
, Caijuan Shi^*
, Yang Ren
, Huiping Ren
, Chonghe Li^*

^*Corresponding author for this work

Department of Physics

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

1 Citation (Scopus)

3 Downloads (CityUHK Scholars)

Abstract

Laser Powder Bed Fusion (LPBF) has emerged as a promising technique for fabricating NiTi shape memory alloy (SMA) components, providing potential personalized customization in medical implants. In this study, in-situ synchrotron-based high-energy X-ray diffraction was employed to investigate the deformation behavior and stress-induced martensitic transformation (SIMT) of LPBF-fabricated polycrystalline NiTi under quasi-static uniaxial tension at varying strain rates. The results indicate that the printed NiTi alloy demonstrated a texture characterized by the coexistence of ⟨001⟩ and ⟨110⟩ austenitic orientations. The transformation behavior was highly dependent on both the strain rate. Notably, the (110)_A planes showed a marked sensitivity to changes in lattice strain and the evolution of applied stress, whereas the (200)A planes exhibited a more stable response. Furthermore, an increased strain rate led to a more rapid rise in dislocation density. © 2025. Published by Elsevier B.V.

Original language	English
Pages (from-to)	5278-5286
Number of pages	9
Journal	Journal of Materials Research and Technology
Volume	39
Online published	24 Oct 2025
DOIs	https://doi.org/10.1016/j.jmrt.2025.10.203
Publication status	Published - Nov 2025

Funding

The authors wish to thank the National Natural Science Foundation of China (No.12305374, 52104305), Shanghai Municipal Science and Technology Commission (25CL2901503), and China Scholarship Council (CSC No.201706890046, 202406890027) for their support. The methodology support of high energy synchrotron X-ray scattering by National Key Basic Research Program of China (2020YFA0406101). Thanks to the anonymous referee of this paper for their constructive suggestions.

Research Keywords

Laser powder bed fusion
Martensitic phase transformation
NiTi
Synchrotron diffraction

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Gao, P., Huang, J., Zhang, Z., He, D., Feng, Q., Yu, Z., Zhang, R., Kang, X., Chen, G., Shi, C., Ren, Y., Ren, H., & Li, C. (2025). Strain rate effects on deformation and martensitic transformation in NiTi alloys fabricated by additive manufacturing under quasi-static tension. Journal of Materials Research and Technology, 39, 5278-5286. https://doi.org/10.1016/j.jmrt.2025.10.203

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title = "Strain rate effects on deformation and martensitic transformation in NiTi alloys fabricated by additive manufacturing under quasi-static tension",

abstract = "Laser Powder Bed Fusion (LPBF) has emerged as a promising technique for fabricating NiTi shape memory alloy (SMA) components, providing potential personalized customization in medical implants. In this study, in-situ synchrotron-based high-energy X-ray diffraction was employed to investigate the deformation behavior and stress-induced martensitic transformation (SIMT) of LPBF-fabricated polycrystalline NiTi under quasi-static uniaxial tension at varying strain rates. The results indicate that the printed NiTi alloy demonstrated a texture characterized by the coexistence of ⟨001⟩ and ⟨110⟩ austenitic orientations. The transformation behavior was highly dependent on both the strain rate. Notably, the (110)A planes showed a marked sensitivity to changes in lattice strain and the evolution of applied stress, whereas the (200)A planes exhibited a more stable response. Furthermore, an increased strain rate led to a more rapid rise in dislocation density. {\textcopyright} 2025. Published by Elsevier B.V.",

keywords = "Laser powder bed fusion, Martensitic phase transformation, NiTi, Synchrotron diffraction",

author = "Pengyue Gao and Jianzhou Huang and Zhen Zhang and Dongdong He and Qisheng Feng and Zhichao Yu and Rulin Zhang and Xueliang Kang and Guangyao Chen and Caijuan Shi and Yang Ren and Huiping Ren and Chonghe Li",

year = "2025",

month = nov,

doi = "10.1016/j.jmrt.2025.10.203",

language = "English",

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Gao, P, Huang, J, Zhang, Z, He, D, Feng, Q, Yu, Z, Zhang, R, Kang, X, Chen, G, Shi, C, Ren, Y, Ren, H & Li, C 2025, 'Strain rate effects on deformation and martensitic transformation in NiTi alloys fabricated by additive manufacturing under quasi-static tension', Journal of Materials Research and Technology, vol. 39, pp. 5278-5286. https://doi.org/10.1016/j.jmrt.2025.10.203

Strain rate effects on deformation and martensitic transformation in NiTi alloys fabricated by additive manufacturing under quasi-static tension. / Gao, Pengyue; Huang, Jianzhou; Zhang, Zhen et al.
In: Journal of Materials Research and Technology, Vol. 39, 11.2025, p. 5278-5286.

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

TY - JOUR

T1 - Strain rate effects on deformation and martensitic transformation in NiTi alloys fabricated by additive manufacturing under quasi-static tension

AU - Gao, Pengyue

AU - Huang, Jianzhou

AU - Zhang, Zhen

AU - He, Dongdong

AU - Feng, Qisheng

AU - Yu, Zhichao

AU - Zhang, Rulin

AU - Kang, Xueliang

AU - Chen, Guangyao

AU - Shi, Caijuan

AU - Ren, Yang

AU - Ren, Huiping

AU - Li, Chonghe

PY - 2025/11

Y1 - 2025/11

N2 - Laser Powder Bed Fusion (LPBF) has emerged as a promising technique for fabricating NiTi shape memory alloy (SMA) components, providing potential personalized customization in medical implants. In this study, in-situ synchrotron-based high-energy X-ray diffraction was employed to investigate the deformation behavior and stress-induced martensitic transformation (SIMT) of LPBF-fabricated polycrystalline NiTi under quasi-static uniaxial tension at varying strain rates. The results indicate that the printed NiTi alloy demonstrated a texture characterized by the coexistence of ⟨001⟩ and ⟨110⟩ austenitic orientations. The transformation behavior was highly dependent on both the strain rate. Notably, the (110)A planes showed a marked sensitivity to changes in lattice strain and the evolution of applied stress, whereas the (200)A planes exhibited a more stable response. Furthermore, an increased strain rate led to a more rapid rise in dislocation density. © 2025. Published by Elsevier B.V.

AB - Laser Powder Bed Fusion (LPBF) has emerged as a promising technique for fabricating NiTi shape memory alloy (SMA) components, providing potential personalized customization in medical implants. In this study, in-situ synchrotron-based high-energy X-ray diffraction was employed to investigate the deformation behavior and stress-induced martensitic transformation (SIMT) of LPBF-fabricated polycrystalline NiTi under quasi-static uniaxial tension at varying strain rates. The results indicate that the printed NiTi alloy demonstrated a texture characterized by the coexistence of ⟨001⟩ and ⟨110⟩ austenitic orientations. The transformation behavior was highly dependent on both the strain rate. Notably, the (110)A planes showed a marked sensitivity to changes in lattice strain and the evolution of applied stress, whereas the (200)A planes exhibited a more stable response. Furthermore, an increased strain rate led to a more rapid rise in dislocation density. © 2025. Published by Elsevier B.V.

KW - Laser powder bed fusion

KW - Martensitic phase transformation

KW - NiTi

KW - Synchrotron diffraction

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UR - https://www.scopus.com/pages/publications/105020977276#tab=impact

U2 - 10.1016/j.jmrt.2025.10.203

DO - 10.1016/j.jmrt.2025.10.203

M3 - RGC 21 - Publication in refereed journal

SN - 2238-7854

VL - 39

SP - 5278

EP - 5286

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

Strain rate effects on deformation and martensitic transformation in NiTi alloys fabricated by additive manufacturing under quasi-static tension

Abstract

Funding

Research Keywords

Publisher's Copyright Statement

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