Tailoring phase evolution and properties in Graphene/CuAlMn composites via post-process heat treatment

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2025-09-10 DOI:10.1016/j.matchar.2025.115556

Dongxuan Li , Xiaosong Jiang , Hongliang Sun , Rui Shu , Jing Li , Zixuan Wu , Liu Yang

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引用次数: 0

Abstract

CuAlMn alloys possess excellent damping capacity and are promising for vibration and noise reduction applications. To optimize their properties, the effects of two heat treatment routes on 0.25 wt% graphene-reinforced CuAlMn composites were systematically investigated. Microstructural and property analyses revealed that precipitation behavior was highly temperature-dependent and directly influenced mechanical and damping properties. Aging at 300 °C (Process I) yielded peak hardness (285 HV) and tensile strength (514 MPa) through enhanced martensitic ordering, while higher aging temperatures in Process II promoted γ₂ phase precipitation, leading to increased hardness (291 HV) but severe ductility loss. Damping capacity showed a non-monotonic response: low-temperature aging suppressed interface mobility, whereas γ₁′ martensite formation partially compensated, and extensive precipitation at 450 °C caused a 69 % reduction in damping. These results highlight the critical role of tailored heat treatment in balancing strength and damping in CuAlMn composites.

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通过后处理热处理调整石墨烯/CuAlMn复合材料的相演化和性能

CuAlMn合金具有优异的阻尼性能，在减振降噪方面具有广阔的应用前景。为了优化其性能，系统研究了两种热处理方式对0.25 wt%石墨烯增强CuAlMn复合材料的影响。显微组织和性能分析表明，沉淀行为高度依赖于温度，并直接影响力学和阻尼性能。在300°C时效（工艺I）时，通过增强马氏体有序性，获得了峰值硬度（285 HV）和抗拉强度（514 MPa）；而在工艺II中，较高的时效温度促进了γ - 2相的析出，导致硬度（291 HV）增加，但塑性损失严重。阻尼能力表现出非单调响应：低温时效抑制了界面迁移率，而γ - 1′马氏体的形成部分补偿了界面迁移率，450°C的广泛沉淀使界面阻尼降低了69%。这些结果强调了定制热处理在平衡CuAlMn复合材料强度和阻尼方面的关键作用。

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.