Shape Memory Effect of a Nd-doped Polycrystalline NiAl Alloy

The shape memory behavior of polycrystalline NiAl-Nd alloy is investigated. It is found that the microalloying element Nd refines the grains of NiAl alloy, which decreases the martensitic transformation temperature in comparison with the binary NiAl alloy with the same Ni content. A stress-induced p...

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Bibliographic Details
Published in:Scripta materialia 1998-02, Vol.38 (6), p.969-974
Main Authors: Xie, C.Y, Hsu (Xu Zuyao), T.Y, Chung, C.Y
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Martensitic transformations
Materials science
Metals. Metallurgy
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
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Summary:The shape memory behavior of polycrystalline NiAl-Nd alloy is investigated. It is found that the microalloying element Nd refines the grains of NiAl alloy, which decreases the martensitic transformation temperature in comparison with the binary NiAl alloy with the same Ni content. A stress-induced phase transformation, 7M - 3R, occurs during yielding in NiAl-Nd alloy. A completely recoverable strain of 3.3 percent is obtained in NiAl-Nd alloy. (AIAA)
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(97)00555-1