Mechanical and Thermomechanical Properties of Ti50Pd50 High Temperature Shape Memory Alloy

被引：0
作者：
Popov, N. N. [1 ]
Presnyakov, D. V. [1 ]
Larkin, V. F. [1 ]
Grishin, E. N. [1 ]
Glukhareva, S. V. [1 ]
Kostyleva, A. A. [1 ]
机构：
[1] Russian Fed Nucl Ctr, All Russian Res Inst Expt Phys, Sarov 607188, Russia
来源：
INORGANIC MATERIALS-APPLIED RESEARCH | 2023年 / 14卷 / 01期
关键词：
effect of annealing; strain induced conditions; Ti50Pd50; alloy; high-temperature shape memory effect; stripe; elemental analysis; local phase analysis; microstructure; grain size; microhardness; differential thermal analysis; mechanical properties; thermomechanical properties; RU;
D O I：
10.1134/S2075113323010306
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The properties of Ti50Pd50 high-temperature shape memory alloy were studied comprehensively on samples made from a strip with thickness of 4.14 mm in the initial state and after various annealing modes and deformation induced conditions. The data on elemental and local phase composition, the structure, themicrohardness, the temperatures of phase transformations, and the mechanical and thermomechanical properties were obtained. We found that the best average shape memory values epsilon(SME) = 2.5% and eta(SME) = 0.29 were obtained for alloy samples after annealing (730 degrees C, 1 min -> quenching in water -> annealing at 400 degrees C, 1 h -> cooling with furnace) upon heating to a temperature of T = 650 degrees C (stable end of SME manifestation) after preliminary induced tensile deformation at T-D = (540-530)degrees C (after heating to T = 620 degrees C) at a rate of approximate to 1.2x 10(-3) s(-1) for the same total induced strain epsilon(tot )= 10%. In this case, the temperatures of start and finish of the main form recovery are & Acy;(s SME) = 568 degrees & Scy; and & Acy;(f SME) = 579 degrees & Scy;. These shape recovery temperatures areacceptable for an alloy used for safety devices. The size of the shape memory effect and the degree of its recovery, however, are insufficient to create safety devices, for example, a cutting type, in which the temperature-sensitive elements will have a plate shape
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页码：96 / 103
页数：8
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