单晶镍基超级合金在 750°C 高温盐腐蚀过程中的结构变化

IF 0.6 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metal Science and Heat Treatment Pub Date : 2024-10-14 DOI:10.1007/s11041-024-01047-9

D. A. Movenko, A. V. Zavodov, A. B. Laptev, A. O. Loschinina

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引用次数: 0

摘要

在 750°C 的 Na2SO4 + NaCl 溶液中测试了 VZhM4 单晶镍基超级合金的耐高温盐诱导腐蚀性。计算了合金在 600 - 1000°C 温度范围内与氧和硫相互作用过程中形成的相的平衡组成。使用扫描和透射电子显微镜研究了高温盐腐蚀过程中合金表层结构和成分的变化。所获得的结果被用于编制 5 个和 20 个测试周期后在合金上形成的腐蚀层的结构图。确定了腐蚀产物中主要相的定量组成。对 Re、Ta 和 Ru 的扩散进行了定性评估。

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Changing the Structure of a Single-Crystal Ni-Based Superalloy During Its High-Temperature Salt Corrosion at 750°C

The VZhM4 single-crystal Ni-based superalloy was tested for high-temperature salt-induced corrosion resistance in Na₂SO₄ + NaCl at 750°C. The equilibrium composition of phases formed during the interaction of the alloy with oxygen and sulfur across the temperature range of 600 – 1000°C were calculated. Changes in the structure and composition of the surface layer of the alloy during high-temperature salt corrosion were studied using scanning and transmission electron microscopy. The results obtained were used to compile structural diagrams for the corrosion layer formed on the alloy after 5 and 20 test cycles. The quantitative composition of the main phases in the corrosion products was determined. A qualitative assessment of Re, Ta, and Ru diffusion was performed.

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来源期刊

Metal Science and Heat Treatment 工程技术-冶金工程

CiteScore

1.20

自引率

16.70%

发文量

102

审稿时长

4-8 weeks

期刊介绍： Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering. Topics covered include: New structural, high temperature, tool and precision steels; Cold-resistant, corrosion-resistant and radiation-resistant steels; Steels with rapid decline of induced properties; Alloys with shape memory effect; Bulk-amorphyzable metal alloys; Microcrystalline alloys; Nano materials and foam materials for medical use.