Deformation Behavior of TiNi Shape Memory Alloys. Cyclic Characteristics under Constant Temperature and Constant Stress.
نویسندگان
چکیده
منابع مشابه
Deformation Properties of TiNi Shape Memory Alloy
In order to describe the deformation properties due to the martensitic transformation and the R-phase transformation of TiNi shape memory alloy, a thermomechanical constitutive equation considering the volume fractions of induced phases associated with both transformations is developed. The proposed constitutive equation expresses well the properties of the shape memory effect, pseudoelasticity...
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Phase transformation tensor Q in the constitutive equation pmposed by Tanaka has been evaluated by employing experimental data of TiNi alloys in a constrained recovery process. It demonstrates that the absolute value of Q for the consmined recovery process is typically about 0.6 0.7 x103 MPa, which is much smaller than that for the stress induced martensitic transformation (typically 2.5 3.5 x1...
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The growth of TiNi thin films by ion beam sputter deposition using a Kaufmann type ion source is described. Argon ions are used to sputter separate Ti and Ni targets to deposit nearequiatomic TiNi thin films. Typically, ion energies and current densities of 1500 eV and 1 mA cm respectively are used, with an argon overpressure of around 0.05 mtorr, to achieve deposition rates of order 1 μm hr. T...
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ژورنال
عنوان ژورنال: Journal of the Society of Materials Science, Japan
سال: 1991
ISSN: 1880-7488,0514-5163
DOI: 10.2472/jsms.40.1276