Effect of Cyclic Heating on the Properties of PEO Coatings on an UFG Ti–18Zr–15Nb Alloy

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING

Russian Metallurgy (Metally) Pub Date : 2025-03-24 DOI:10.1134/S0036029525700338

L. I. Zaynullina, I. Z. Sharipov, D. V. Gunderov, R. G. Farrakhov, E. V. Parfenov

引用次数: 0

Abstract—The temperature dependence of the Ti–18Zr–15Nb alloy dilation in an ultrafine-grained (UFG) state formed by equal-channel angular pressing (ECAP), which is coated using plasma-electrolytic oxidation (PEO), is investigated. The stability of the formed PEO coatings to heating and cooling has also been determined. The results demonstrate that a sharp increase in the thermal expansion coefficient (TEC) at 350°C indicates the presence of a phase transformation. During tests, a porous coating on the Ti–18Zr–15Nb alloy is retained, but cracks become larger and longer.

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循环加热对UFG Ti-18Zr-15Nb合金PEO涂层性能的影响

摘要：研究了等离子体电解氧化（PEO）包覆Ti-18Zr-15Nb合金在等通道角挤压（ECAP）形成超细晶（UFG）状态下膨胀的温度依赖性。制备的PEO涂层对加热和冷却的稳定性也进行了测试。结果表明，在350℃时，热膨胀系数（TEC）的急剧增加表明相变的存在。在试验过程中，Ti-18Zr-15Nb合金表面保留了多孔涂层，但裂纹变大变长。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

0.70

自引率

25.00%

发文量

140

期刊介绍： Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.