Results 181 to 190 of about 16,535 (242)
Advances in Dealloying of Ti and Ti-Based Alloys for Biomedical Applications. [PDF]
Materials (Basel)Tiwari K, Raj D, Rizzi P, Scaglione F.
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Multimodal Evaluation of Three NiTi Rotary Systems: Clinical Simulation, Mechanical Testing, and Finite Element Analysis. [PDF]
Dent J (Basel)Aparicio JA +8 more
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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 +4 more
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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 +4 more
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Metallurgical and Materials Transactions A, 2003
This work focuses on the stress-induced transformation in solutionized and overaged single-crystal NiTi alloys. The potential role of detwinning on the recoverable strains was investigated both theoretically and also with temperature-cycling experiments. The detwinning is the growth of one variant within a martensite in expense of the other.
Huseyin Sehitoglu +7 more
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This work focuses on the stress-induced transformation in solutionized and overaged single-crystal NiTi alloys. The potential role of detwinning on the recoverable strains was investigated both theoretically and also with temperature-cycling experiments. The detwinning is the growth of one variant within a martensite in expense of the other.
Huseyin Sehitoglu +7 more
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Journal de Physique IV (Proceedings), 2004
Large changes in hysteresis are reported as a function of applied stress under thermal cycling experiments in NiTi single crystals. In the low Ni alloy the thermal hysteresis expanded with increasing stress while in the high Ni alloy the thermal hysteresis contracted with increasing stress.
H. Sehitoglu +3 more
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Large changes in hysteresis are reported as a function of applied stress under thermal cycling experiments in NiTi single crystals. In the low Ni alloy the thermal hysteresis expanded with increasing stress while in the high Ni alloy the thermal hysteresis contracted with increasing stress.
H. Sehitoglu +3 more
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Surface and Interface Analysis, 1990
Abstract In this study, the oxidation of the surface of a 50/50 (at.%) NiTi alloy was studied by XPS, AES and SEM. Samples of the NiTi alloy were oxidized at 23°C and high temperatures at an oxygen pressure of 10 −4 Torr and in atmosphere. At 10 −4
C.‐M. Chan, S. Trigwell, T. Duerig
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Abstract In this study, the oxidation of the surface of a 50/50 (at.%) NiTi alloy was studied by XPS, AES and SEM. Samples of the NiTi alloy were oxidized at 23°C and high temperatures at an oxygen pressure of 10 −4 Torr and in atmosphere. At 10 −4
C.‐M. Chan, S. Trigwell, T. Duerig
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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 +4 more
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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 +4 more
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Transformation cycling in NiTi alloys
Journal of Physics F: Metal Physics, 1984NiTi alloys with different transition temperature sets Ms, TR and Af are considered here to be affected by cycling between the martensite and the parent phase. In alloys with a starting temperature Ms higher than 50 degrees C, Ms can shift on cycling below the critical temperature TR at which a transition to the rhombohedral (R) phase appears.
G Airoldi, G Bellini, C Di Francesco
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Corrosion behaviour of NiTi alloy
Electrochimica Acta, 2009Abstract In the present work, the corrosion behaviour of NiTi in Hanks’ solution at 37 °C was assessed by the use of electrochemical methods. Pure titanium and pure nickel were included in the study in order to understand the contribution of each alloying element.
N. Figueira +3 more
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