摘要：高强高导高耐热铜合金作为现代高新技术用关键材料之一,已被广泛应用于轨道交通、电子通信和导航控制等众多领域。本文以服役温度超过300℃的Cu-Ag、Cu-Ni-Si、Cu-Cr-Zr、Cu-Al_(2)O_(3)和Cu-Cr-Nb等高强高导高耐热铜合金为对象,概述了它们的合金设计原则、制备特点和相关物理特性,分析了它们开发应用中所存在的问题,并对它们的发展趋势进行了讨论和展望。

摘要：设计了一种无砷的HAl77-2-Re耐腐蚀铝黄铜。利用失重法、电化学测试、X射线衍射分析、扫描电镜与能谱分析等手段研究了这种稀土铝黄铜在NaCl(3.5%)溶液中的耐腐蚀性能及其腐蚀行为。结果表明:在稀土铝黄铜的腐蚀过程中,稀土参与了表面腐蚀产物膜的形成,增大了极化电阻,抑制了腐蚀的进行,提高了合金的耐腐蚀性能;与含砷铝黄铜相比,表现出了较好的耐腐蚀性能。

摘要：Cu−Fe alloys with different Fe contents were prepared by vacuum hot *** hot rolling and aging treatment,the effects of Fe content on microstructure,mechanical properties and electrical conductivity of Cu−Fe alloys were *** results show that,when w(Fe)<60%,the dynamic recrystallization extent of both Cu phase and Fe phase *** w(Fe)≥60%,Cu phase is uniformly distributed into the Fe phase and the deformation of alloy is more *** the increase of the Fe content,the tensile strength of Cu−5wt.%Fe alloy increases from 305 MPa to 736 MPa of Cu−70wt.%Fe alloy,the elongation decreases from 23%to 17%and the electrical conductivity decreases from 31%IACS to 19%*** results provide a guidance for the composition and processing design of Cu−Fe alloys.

摘要：Copper matrix composites(CMCs)offer promising applications by combining the functional characteristics of copper with composite *** the rapid advancement in aerospace,microelectronics,and intelligent terminal engineering,the demand for CMCs with superior mechanical and electrical properties has become increasingly *** paper reviews the design principles,preparation methods,microstructures and properties of some typical *** existing form of composite phases in the Cu matrix and their effects on microstructure evolution and comprehensive properties are *** underlying mechanisms governing these enhancements are *** results provide a systematic understanding of the relationship between reinforcement phases and properties,offering insights for the future development of CMCs aimed to achieve much better comprehensive *** paper concludes by outlining the development trends and future outlook for the application of CMCs.