熔铸法制备CuSn10Pb10/42CrMoS4双金属液压缸体

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

Materials Letters Pub Date : 2025-06-30 DOI:10.1016/j.matlet.2025.139002

L.X. Qi , H.Y. Han , L.X. Yang , C.J. Li , Y. Wang , L.A. Jiang , X.G. Li

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引用次数: 0

摘要

本研究提出了一种热梯度工程策略，通过钢子结构设计和多级冷却调节来控制CuSn10Pb10/42CrMoS4双金属缸体的组织和性能。带有锥形孔、热凸台和液体收集器的结构与三级冷却过程（慢速：辐射/对流→中等：1.6°C/s→快速：6°C/s）相结合，将缺陷限制在半径52 mm的2mm区域内，从而符合双重工业规范。三阶段冷却控制Pb相的演化，缓慢冷却促进Sn/Pb偏析，中等冷却促进枝晶Cu生长，快速冷却抑制Pb聚集成不连续球体。所制备的气缸体抗剪强度为126 MPa，抗拉强度为263 MPa，性能优越。

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Fabrication of CuSn10Pb10/42CrMoS4 bimetal hydraulic cylinder block by fusion casting

This study develops a thermal gradient engineering strategy to control microstructure and properties in CuSn10Pb10/42CrMoS4 bimetal cylinder blocks via steel substructure design and multi-stage cooling regulation. Structure with the tapered hole, thermal boss and liquid collector were coupled with a three-stage cooling process (slow: radiative/convective → moderate: 1.6 °C/s → rapid: 6 °C/s) to confine defects to a 2 mm zone at 52 mm radius, enabling compliance with dual industrial specifications. Three-stage cooling governed Pb phase evolution, where slow cooling promoted Sn/Pb segregation, moderate cooling enabled dendritic Cu growth, and rapid cooling suppressed Pb aggregation into discontinuous spheroids. The fabricated cylinder block exhibited superior performance with shear strength 126 MPa and tensile strength 263 MPa.

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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