Strain glass state in Ni50.3Ti29.7Hf20 high-temperature shape memory alloy

Longjia Li; Zhongsheng Yang; Kengfeng Xu; Dingcong Cui; Lei Wang; Zhijun Wang; Junjie Li; Jincheng Wang; Feng He

doi:10.1016/j.scriptamat.2024.116449

Strain glass state in Ni_50.3Ti_29.7Hf₂₀ high-temperature shape memory alloy

Longjia Li, Zhongsheng Yang, Kengfeng Xu, Dingcong Cui, Lei Wang, Zhijun Wang, Junjie Li, Jincheng Wang, Feng He

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

Abstract

NiTiHf alloy is one of the most promising candidates for high-temperature shape-memory actuators. Although the phase transition behavior of NiTiHf is well understood, there are still new revelations. Here, we for the first time report the strain glass state in a NiTiHf alloy. Our results demonstrate that the H-phase precursor generated during rapid cooling suppresses the normal martensitic phase transition of NiTiHf, leading to the strain glass state. Moreover, we successfully controlled the strain glass transition via changing the cooling rate. These new findings make the NiTiHf system promising for high-temperature superelastic materials.

Original language	English
Article number	116449
Journal	Scripta Materialia
Volume	257
DOIs	https://doi.org/10.1016/j.scriptamat.2024.116449
State	Published - 1 Mar 2025

Keywords

Martensitic transformation
Precipitation
Shape memory alloys
Strain glass

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10.1016/j.scriptamat.2024.116449

Cite this

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title = "Strain glass state in Ni50.3Ti29.7Hf20 high-temperature shape memory alloy",

abstract = "NiTiHf alloy is one of the most promising candidates for high-temperature shape-memory actuators. Although the phase transition behavior of NiTiHf is well understood, there are still new revelations. Here, we for the first time report the strain glass state in a NiTiHf alloy. Our results demonstrate that the H-phase precursor generated during rapid cooling suppresses the normal martensitic phase transition of NiTiHf, leading to the strain glass state. Moreover, we successfully controlled the strain glass transition via changing the cooling rate. These new findings make the NiTiHf system promising for high-temperature superelastic materials.",

keywords = "Martensitic transformation, Precipitation, Shape memory alloys, Strain glass",

author = "Longjia Li and Zhongsheng Yang and Kengfeng Xu and Dingcong Cui and Lei Wang and Zhijun Wang and Junjie Li and Jincheng Wang and Feng He",

note = "Publisher Copyright: {\textcopyright} 2024 Acta Materialia Inc.",

year = "2025",

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doi = "10.1016/j.scriptamat.2024.116449",

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TY - JOUR

T1 - Strain glass state in Ni50.3Ti29.7Hf20 high-temperature shape memory alloy

AU - Li, Longjia

AU - Yang, Zhongsheng

AU - Xu, Kengfeng

AU - Cui, Dingcong

AU - Wang, Lei

AU - Wang, Zhijun

AU - Li, Junjie

AU - Wang, Jincheng

AU - He, Feng

PY - 2025/3/1

Y1 - 2025/3/1

N2 - NiTiHf alloy is one of the most promising candidates for high-temperature shape-memory actuators. Although the phase transition behavior of NiTiHf is well understood, there are still new revelations. Here, we for the first time report the strain glass state in a NiTiHf alloy. Our results demonstrate that the H-phase precursor generated during rapid cooling suppresses the normal martensitic phase transition of NiTiHf, leading to the strain glass state. Moreover, we successfully controlled the strain glass transition via changing the cooling rate. These new findings make the NiTiHf system promising for high-temperature superelastic materials.

AB - NiTiHf alloy is one of the most promising candidates for high-temperature shape-memory actuators. Although the phase transition behavior of NiTiHf is well understood, there are still new revelations. Here, we for the first time report the strain glass state in a NiTiHf alloy. Our results demonstrate that the H-phase precursor generated during rapid cooling suppresses the normal martensitic phase transition of NiTiHf, leading to the strain glass state. Moreover, we successfully controlled the strain glass transition via changing the cooling rate. These new findings make the NiTiHf system promising for high-temperature superelastic materials.

KW - Martensitic transformation

KW - Precipitation

KW - Shape memory alloys

KW - Strain glass

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U2 - 10.1016/j.scriptamat.2024.116449

DO - 10.1016/j.scriptamat.2024.116449

M3 - 文章

AN - SCOPUS:85208600541

SN - 1359-6462

VL - 257

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 116449

ER -

Strain glass state in Ni_50.3Ti_29.7Hf₂₀ high-temperature shape memory alloy

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Keywords

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