Results 151 to 160 of about 3,689,671 (208)

Surface oxidation of NiTi shape memory alloy

Biomaterials, 2002
Mechanically polished NiTi alloy (50 at% Ni) was subjected to heat treatment in air in the temperature range 300-800 degrees C and characterised by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy. Thermogravimetry measurements were carried out to investigate the kinetics of oxidation. The results
G S, Firstov, R G, Vitchev, H, Kumar, B, Blanpain, J, Van Humbeeck   +4 more
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Cast NiTi Shape‐Memory Alloys

Advanced Engineering Materials, 2004
The purpose of this study is to build a fundamental understanding of the relationship between the structure and properties of cast nickel‐titanium (NiTi). The structure of the cast material will be analyzed at various scales and will be related to the properties of the cast material such as transformation temperatures, stress‐strain behavior, and ...
Alicia M. Ortega, Carl P. Frick, Jeffrey Tyber, Ken Gall, Hans J. Maier   +4 more
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High Voltage Anodisation of a NiTi Shape Memory Alloy

ECS Meeting Abstracts, 2006
Abstract not Available.
Kawakita, J., Hassel, A., Stratmann, M.
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Drilling of NiTi Shape Memory Alloys

Materialwissenschaft und Werkstofftechnik, 2004
AbstractThe machinability of NiTi based shape memory alloys has been examined by conducting drilling experiments. For this reason the cutting parameters cutting speed and feed were varied within a wide range. The machining process was evaluated in terms of tool wear, cutting forces and machining quality.
K. Weinert, V. Petzoldt, D. Kötter, M. Buschka   +3 more
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NiTi-Ta shape memory alloys

SPIE Proceedings, 1998
This paper studies the effect of Ta addition on the martensitic transformation characteristics and the X-ray visibility of NiTi shape memory alloys. It was found that: (1) The transformation temperatures of the Ti 49 Ni 51 binary alloy increase drastically by an addition of 0 -- 4at%Ta, but only slightly when the concentration exceeds 4at%.
Jianlu Ma, F. Yang, J. I. Subirana, Zhongjie J. Pu, Kuang-Hsi Wu   +4 more
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Analysis of a NiTi Shape Memory Alloy

Materials Science Forum, 2015
This work demonstrates particularly the basic properties of shape memory alloys and gives a brief review about their basic crystallographic processes. The attributes of shape memory alloys will be presented through the NiTi alloys. The crystallographic principles of three unique properties were investigated and the functional mechanism described.
László Kálmán, István Mészáros
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The triple-shape memory effect in NiTi shape memory alloys

Smart Materials and Structures, 2012
We report two approaches to realize the triple-shape memory effect (SME), i.e., returning to the original shape from the temporary shape through one intermediate shape in a gradual/step-by-step heating induced recovery, in NiTi shape memory alloys (SMAs).
Tang, Cheng, Huang, Wei Min, Wang, Chang Chun, Purnawali, Hendra   +3 more
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Thermomechanical Models for NiTi Shape Memory Alloys and Their Applications

ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 2010
Optimal design of SMA structures must be based on a deep knowledge of the material properties. As the SMA structures increase in complexity (stents, textiles, microdevices), modeling becomes increasingly involved. Macroscopic models of shape memory alloys are being developed with the ultimate aim to effectively simulate thermomechanical response of a ...
Sedlak, Petr, Frost, Miroslav, Ben Zineb, Tarak, Sittner, Petr   +3 more
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Thermal processing of polycrystalline NiTi shape memory alloys

Materials Science and Engineering: A, 2004
ABSTRACTThe objective of this study is to examine the effect of heat treatment on polycrystalline Ti-50.9 at.%Ni subsequent to hot-rolling. In particular we examine microstructure, transformation temperatures and mechanical behavior of deformation processed NiTi.
Carl P. Frick, Alicia M. Ortega, Jeff Tyber, Ken Gall, Hans J. Maier, A. El.M., Yinong Liu   +6 more
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Some aspects of the properties of NiTi shape memory alloy

Journal of Alloys and Compounds, 1997
The damping capacity, tensile behaviour and the transformation characteristics of a NiTi shape memory alloy rolled sheet as a function of annealing conditions have been studied.
Yong Liu, Luc Delaey
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