Internal stresses and hardness of alloys based on the V-Nb-Ta-Ti system irradiated with helium ions

IF 0.4 4区 物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY
I. A. Ivanov, B. S. Amanzhulov, V. V. Uglov, S. V. Zlotski, A. M. Temir, M. V. Koloberdin, M. V. Zdorovets, A. D. Sapar, Y. O. Ungarbayev, Ke Jin
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Abstract

The changes in internal stresses and mechanical properties of V‑Nb-Ta-Ti alloys manufactured by arc melting after irradiation with He2+ ions (40 keV) to a fluence of 2 ⋅ 1017 cm−2 are studied. The irradiation of V, VNb, and VNbTa alloys is shown to decrease the compressive macrostresses in the pre-peak region and increase them for V and VNbTa in the peak region of helium implantation. The irradiation of a VNbTaTi high-entropy alloy increases the compressive macrostresses by 44% and 50% in the two regions, respectively. The dislocation density is observed to increase significantly. The elastic modulus of VNbTa and VNbTaTi was stable, but decreased for V and VNb. The degree of hardening is the highest for V and VNb (99% and 52%, respectively) and the lowest—for VNbTa and VNbTaTi (29% and 45%, respectively). The influence of macrostresses and dislocation density on the hardness of V‑Nb-Ta-Ti alloys irradiated with He is established. VNbTaTi shows a higher radiation resistance compared to that of V, VNb, and VNbTa.

Abstract Image

氦离子辐照V-Nb-Ta-Ti体系合金的内应力和硬度
研究了He2+离子(40 keV)在2⋅1017 cm−2辐照下弧熔制备的V‑Nb-Ta-Ti合金内应力和力学性能的变化。V、VNb和VNbTa合金的辐照降低了峰前区的压缩宏观应力,增加了氦注入峰区V和VNbTa的压缩宏观应力。VNbTaTi高熵合金辐照后,两个区域的宏观压应力分别提高了44%和50%。观察到位错密度显著增加。VNbTa和VNbTaTi的弹性模量稳定,V和VNb的弹性模量下降。V和VNb的硬化程度最高(分别为99%和52%),VNbTa和VNbTaTi的硬化程度最低(分别为29%和45%)。建立了宏观应力和位错密度对He辐照V - Nb-Ta-Ti合金硬度的影响。与V、VNb和VNbTa相比,vnbti具有更高的耐辐射性能。
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来源期刊
Russian Physics Journal
Russian Physics Journal PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.00
自引率
50.00%
发文量
208
审稿时长
3-6 weeks
期刊介绍: Russian Physics Journal covers the broad spectrum of specialized research in applied physics, with emphasis on work with practical applications in solid-state physics, optics, and magnetism. Particularly interesting results are reported in connection with: electroluminescence and crystal phospors; semiconductors; phase transformations in solids; superconductivity; properties of thin films; and magnetomechanical phenomena.
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