Investigation of Cu segregation in cast Ti-5Cu alloys

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-09-25 DOI:10.1016/j.matlet.2025.139468

Jin-Tao Zou , Yong-Dong He , Xu Yue

引用次数: 0

Abstract

To investigate the compositional segregation behavior of Cu during the solidification of Ti-5Cu alloy and its influence on microstructural evolution under thermal deformation, this study employed ICP-OES and SEM-EDS techniques to analyze the compositional distribution in the initial, intermediate, and final solidification zones of the as-cast ingot. The macro- and micro-scale distribution characteristics of Cu were revealed. Results show that Cu segregation occurs in the ingot, with significant enrichment along grain boundaries. In addition, the Ti₂Cu precipitates are dispersed along grain boundaries, effectively hindering grain growth. These findings provide critical theoretical guidance for optimizing homogenization treatments and hot-working parameters of Ti-Cu alloy ingots.

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铸态Ti-5Cu合金中Cu偏析的研究

为了研究Ti-5Cu合金凝固过程中Cu的成分偏析行为及其对热变形下显微组织演变的影响，采用ICP-OES和SEM-EDS技术分析了铸态铸锭初、中、终凝固区的成分分布。揭示了铜在宏观和微观尺度上的分布特征。结果表明：铜在铸锭中发生偏析，沿晶界富集明显；此外，Ti2Cu析出物沿晶界分散，有效地阻碍了晶粒的生长。这些研究结果为优化Ti-Cu合金锭的均匀化处理和热加工参数提供了重要的理论指导。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive