Martensitic transformation and shape memory effects in Co-V-Al alloys at high temperatures

Hengxing Jiang; Shuiyuan Yang; Cuiping Wang; Yanqing Zhang; Xiao Xu; Yuechao Chen; Toshihiro Omori; Ryosuke Kainuma; Xingjun Liu

doi:10.1016/j.jallcom.2019.01.216

Martensitic transformation and shape memory effects in Co-V-Al alloys at high temperatures

Hengxing Jiang, Shuiyuan Yang, Cuiping Wang, Yanqing Zhang, Xiao Xu, Yuechao Chen, Toshihiro Omori, Ryosuke Kainuma, Xingjun Liu

ENG - Metallurgy

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

3 Citations (Scopus)

Abstract

Martensitic transformation in Co-V-Al ternary systems was investigated by means of the structural and thermal analysis in single phase martensite alloys. The martensite phase presents a non-modulated L1₀ structure transformed from a B2 parent phase. With the increase of V content, martensitic transformation temperatures exceeding 100 °C and occurring at approximately 200–300 °C. A two-step shape memory effect occurring at different temperature ranges was found for the first time in Co₆₀V₃₀Al₁₀ alloys, and considerable recoverable strains reaching up to 3.0% were observed. This study shows that Co-V-Al alloys have potential as new candidates for high-temperature shape memory alloys operating in a large temperature range.

Original language	English
Pages (from-to)	648-654
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	786
DOIs	https://doi.org/10.1016/j.jallcom.2019.01.216
Publication status	Published - 2019 May 25

Keywords

High-temperature shape memory alloys (HTSMA)
Martensite stabilization
Martensitic transformation
Thermal analysis

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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Martensitic transformation and shape memory effects in Co-V-Al alloys at high temperatures. / Jiang, Hengxing; Yang, Shuiyuan; Wang, Cuiping; Zhang, Yanqing; Xu, Xiao; Chen, Yuechao; Omori, Toshihiro ; Kainuma, Ryosuke; Liu, Xingjun.

In: Journal of Alloys and Compounds, Vol. 786, 25.05.2019, p. 648-654.

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

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title = "Martensitic transformation and shape memory effects in Co-V-Al alloys at high temperatures",

abstract = "Martensitic transformation in Co-V-Al ternary systems was investigated by means of the structural and thermal analysis in single phase martensite alloys. The martensite phase presents a non-modulated L10 structure transformed from a B2 parent phase. With the increase of V content, martensitic transformation temperatures exceeding 100 °C and occurring at approximately 200–300 °C. A two-step shape memory effect occurring at different temperature ranges was found for the first time in Co60V30Al10 alloys, and considerable recoverable strains reaching up to 3.0% were observed. This study shows that Co-V-Al alloys have potential as new candidates for high-temperature shape memory alloys operating in a large temperature range.",

keywords = "High-temperature shape memory alloys (HTSMA), Martensite stabilization, Martensitic transformation, Thermal analysis",

author = "Hengxing Jiang and Shuiyuan Yang and Cuiping Wang and Yanqing Zhang and Xiao Xu and Yuechao Chen and Toshihiro Omori and Ryosuke Kainuma and Xingjun Liu",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grant No. 51571168 , Grant No. 51831007 ) .",

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AU - Jiang, Hengxing

AU - Yang, Shuiyuan

AU - Wang, Cuiping

AU - Zhang, Yanqing

AU - Xu, Xiao

AU - Chen, Yuechao

AU - Omori, Toshihiro

AU - Kainuma, Ryosuke

AU - Liu, Xingjun

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grant No. 51571168 , Grant No. 51831007 ) .

PY - 2019/5/25

Y1 - 2019/5/25

N2 - Martensitic transformation in Co-V-Al ternary systems was investigated by means of the structural and thermal analysis in single phase martensite alloys. The martensite phase presents a non-modulated L10 structure transformed from a B2 parent phase. With the increase of V content, martensitic transformation temperatures exceeding 100 °C and occurring at approximately 200–300 °C. A two-step shape memory effect occurring at different temperature ranges was found for the first time in Co60V30Al10 alloys, and considerable recoverable strains reaching up to 3.0% were observed. This study shows that Co-V-Al alloys have potential as new candidates for high-temperature shape memory alloys operating in a large temperature range.

AB - Martensitic transformation in Co-V-Al ternary systems was investigated by means of the structural and thermal analysis in single phase martensite alloys. The martensite phase presents a non-modulated L10 structure transformed from a B2 parent phase. With the increase of V content, martensitic transformation temperatures exceeding 100 °C and occurring at approximately 200–300 °C. A two-step shape memory effect occurring at different temperature ranges was found for the first time in Co60V30Al10 alloys, and considerable recoverable strains reaching up to 3.0% were observed. This study shows that Co-V-Al alloys have potential as new candidates for high-temperature shape memory alloys operating in a large temperature range.

KW - High-temperature shape memory alloys (HTSMA)

KW - Martensite stabilization

KW - Martensitic transformation

KW - Thermal analysis

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