Mechanical and Thermomechanical Properties of the Ti50Pd40Ni10 Alloy with a High-Temperature Shape-Memory Effect Studied on a Workpiece in the Form of a Bar in the Annealed State

—Complex studies of the properties of the Ti 50 Pd 40 Ni 10 alloy (at %) with a high-temperature shape memory effect have been performed using specimens prepared from a 5.86-mm bar in the initial annealed state. Information on the temperatures of phase transformations and mechanical and thermomechan...

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Bibliographic Details
Published in:Physics of metals and metallography 2019-10, Vol.120 (10), p.1001-1005
Main Authors: Popov, N. N., Presnyakov, D. V., Lar’kin, V. F., Suvorova, E. B., Kostyleva, A. A.
Format: Article
Language:English
Subjects:
Annealing
Chemistry and Materials Science
Heat resistant alloys
Heat treating
Heat treatment
High temperature
Martensitic transformations
Materials Science
Metallic Materials
Nuclear engineering
Nuclear safety
Phase transitions
Safety devices
Shape effects
Shape memory alloys
Strength and Plasticity
Thermomechanical properties
Titanium base alloys
Workpieces
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Summary:—Complex studies of the properties of the Ti 50 Pd 40 Ni 10 alloy (at %) with a high-temperature shape memory effect have been performed using specimens prepared from a 5.86-mm bar in the initial annealed state. Information on the temperatures of phase transformations and mechanical and thermomechanical characteristics of the alloy have been obtained. The maximum values of the shape-memory effect and of the degree of shape recovery were 1.5 and 21%, respectively. This is insufficient to create workable safety devices at this stage. The thermomechanical characteristics determined in this study are comparable with the data we obtained earlier on samples cut out from a 2.04-mm-thick strip. In spite of the rather low values of the thermomechanical characteristics obtained at the first stage of research, this alloy is a promising material, and if obtaining optimum values of working characteristics by varying manufacturing conditions and regimes of heat treatment and deformation, it can be used to create working elements of various safety devices for objects of nuclear power engineering.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X19100107