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Tailoring Nitinol for elastocaloric application

delete2025-10-01
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PRE
AI
A
Agata Czernuszewicz *
A
Alan R. Pelton
M
Matthew Carl
J
Julie Slaughter
DOI:10.1557/s43579-025-00855-1delete
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摘要

摘要

En 中文
This study focuses on tailoring commercial Nitinol, the most commonly used elastocaloric material, for near-room-temperature cooling applications. Short heat treatments near 500 degrees C were used to fine-tune the material's transition temperature, resulting in austenite finish temperatures ranging from 6.0 to 25.5 degrees C and altered superelastic and elastocaloric properties. Plateau stresses decreased while temperature changes rose from 21.5 degrees C up to 27.9 degrees C at 6% strain. Significant variability in the Nitinol response when testing below its austenite finish temperature was observed. The effect of mechanical cycling on transition temperatures was also evaluated, demonstrating an increase for all the samples.
Keyword:
Shape memory
Phase transformation
Elastic properties
Efficiency
Energy generation

期刊

MRS Communications 封面图
MRS Communications
IF:
2.3
论文数:
240
被引数:
2.8K

机构

S
Stanford University
学者数:
9.6W
论文数: 8.2W
被引数: 17.0W
A
Ames National Laboratory
学者数:
1.3K
论文数: 905
被引数: 3.0K
U
united states department of energy (doe)
学者数:
11.3W
论文数: 9.6W
被引数: 246
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