N. N. Popov, D. V. Presnyakov, E. N. Grishin, T. I. Sysoeva, T. A. Morozova, S. V. Glukhareva, A. A. Kostyleva
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引用次数: 0
摘要
摘要 对具有高温形状记忆效应的 Ni50Ti47.5Hf2.5 合金的初始状态和真空高温退火后的 2.34 毫米厚带材样品的性能进行了全面研究。获得了有关元素和相组成以及结构状态的数据。报告了对合金相变温度以及机械和热机械特性的研究结果。通过退火和选择应变诱导条件，确定了形状恢复温度 As SME = 137°C 和 Af SME = 150°C。这些值对于制造所需的减压装置是可以接受的。最大 εSME 和 ηSME 值分别为 3.4% 和 43%。对于为核电站制造高效减压装置来说，这些数值并不算大。通过优化热敏元件的几何形状，可以在这种装置中获得所需的位移值。
Mechanical and Thermomechanical Characteristics of the Ni50Ti47.5Hf2.5 Alloy with a High-Temperature Shape Memory Effect
Abstract
The properties of the Ni50Ti47.5Hf2.5 alloy with a high-temperature shape memory effect have been comprehensively studied on samples made from a 2.34-mm-thick strip in the initial state and after high-temperature annealing in vacuum. Data on the elemental and phase compositions and structural state have been obtained. The results of investigations of the phase transformation temperatures and the mechanical and thermomechanical characteristics of the alloy are reported. Using annealing and selecting the strain-inducing conditions, the shape recovery temperatures AsSME = 137°C and AfSME = 150°C have been determined. These values are acceptable for creating the required depressurization device. The maximum εSME and ηSME values have been found to be 3.4 and 43%, respectively. These are not very large values for creating an efficient depressurization device for nuclear power plants. The desired displacement values in such a device can be obtained by optimizing the geometry of a thermosensitive element.
期刊介绍：
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.
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