金属间化合物及其应用

主要介绍金属间化合物发展过程,讨论了该材料的特点、制造方法及应用情况.     

Advanced Cold Rolled Steels for Automotive Applications

Advanced high‐strength steels offer a great potential for the further development of automobile bodies‐in‐white due to their combined mechanical properties of high formability and strength. They represent the first choice in material selection for strength and crash‐relevant parts with challenging geometries. The intensive development of multiphase steels by ThyssenKrupp Steel has led to hot dip galvanizing concepts with an outstanding forming potential. Hot rolled, hot dip galvanized complex‐phase steels are currently produced in addition to cold rolled dual phase (DP) and retained austenite (RA) or transformation induced plasticity (TRIP) steels. New continuously annealed grades of steel are being developed with tensile strength levels of up to 1000 MPa in combination with sufficient ductility for the high demands of structural automobile components. These steels make use of the classic advantages of microalloying as well as the principles of DP steels and RA / TRIP steels. Further improvement of properties will be reached by the new class of high manganese alloyed steels.     

稀土在铜及其合金中的作用和应用

稀土是一种十分活泼的金属,它与铜及其合金作用后可以显著改善组织结构和提高综合性能.介绍了稀土在铜及其合金中的作用和应用.     

先进的中厚板控制冷却技术的应用

介绍了目前世界上较为先进的中厚板控制冷却技术的特点及其在中厚板品种开发申的应用情况。     

微波电子器件用铜及其合金的应用开发

叙述了国内微波电子器件用先进铜的需求、科研和生产以及性能指标的概况。介绍了几个主要国家的标准，特别是氧含量的指标。指出我国标准与国外比较尚有较大差距。作者着重指出真空电子与微电子在先进铜应用上的差异，并提出几点结论和建议。     

先进艾萨炉在铜冶炼中的应用

介绍了艾萨炉在云南铜业股份有限公司的引进过程，应用实践表明，该技术引进是成功的，实现了增产、节能和排放达标，经济效益和社会效益显著。     

先进工艺控制在铜冶炼中的应用

本文涉及先进工艺控制(APC)在炼铜工艺中的应用。对应用先进工艺控制的许多关键问题,如控制模型,工艺过程动力学和时间延迟,仪表使用和取样进行了讨论。然后介绍了APC应用的一般方法,并介绍2个实例研究,以验证应用APC的效益及效率。     

铜合金线材的应用及其生产工艺

阐述了铜合金线材的品种、主要用途和发展趋势。铜合金线材中的黄铜线、青铜线和锌白铜线的需求量年增长速度均超过10％。最后阐述了在一般中小企业可生产铜合金线材的生产工艺及其一些缺陷的解决措施。     

超高纯铜的制备方法和应用

简要介绍了超高纯铜(UHPC)的几种精炼方法，以及它在工业方面的应用。并对超高纯铜的研究开发趋势及应用前景进行了展望。     

电解铜的 PFD 技术评析

介绍了PFD技术的原理、流程、进液方式,以及与常规电解工艺相比的优缺点,提出了使铜电解生产在高电流密度下顺利进行的一些措施。     

阴极铜剥片装置的优化改造

针对阴极剥片机组核心区域剥片装置故障高的问题 , 结合生产操作 , 以及实际检修过程 , 从设备的角度分析剥片装置故障率高的主要原因 , 根据原因提出设备改进方案 , 降低剥片装置故障率,保证剥片机组稳定运行,并且通过改进检修方式,减少故障检修时间,降低检修劳动强度。     

阴极铜剥片装置的优化改造

针对阴极剥片机组核心区域剥片装置故障高的问题,结合生产操作,以及实际检修过程,从设备的角度分析剥片装置故障率高的主要原因,根据原因提出设备改进方案,降低剥片装置故障率,保证剥片机组稳定运行,并且通过改进检修方式,减少故障检修时间,降低检修劳动强度。     

大极板高纯阴极铜动态喷洗技术的研究与应用

分析了阴极铜的洗涤难点,介绍了大极板电铜机组在研制开发中,应用动态喷洗技术,提高阴极铜洗涤质量的研究工作及其实效。     

Applications of X-Ray Characterization for Advanced Materials in the Electronics Industry

Nanometer thick films, quantum dots, and quantum wires are the basis of the modern electronic industry. X-ray diffraction techniques play an increasingly important role as basic characterization tools for determining detailed structural information of ultrathin film such as the evolution of strain relaxation, defect formation, film/substrate interfacial properties, and the effects of the reduced dimensionality and structural correlations to electrical properties. Materials of technological interest are SiGe and strained Si; artificial substrates such as silicon on insulator; high- and low-κ dielectric materials, which will substitute SiO₂; materials for interconnects; new materials for memory storage; micro-electro-mechanical systems (MEMS); and photovaltaics. An overview of the major X-ray scattering applications of interest to this industry will be presented in this article.     

Role of Niobium in Advanced High Strength Steels for Automotive Applications

Two major drivers for the use of newer steels in the automotive industry is fuel efficiency and increased safety performance.Fuel efficiency is mainly a function of weight of steel parts,which in turn,is controlled by gauge and design.Safety is determined by the energy absorbing capacity of the steel used to make the part.All of these factors are incentives for the U.S.automakers to use Advanced High Strength Steels (AHSS) to replace the conventional steels used to manufacture automotive parts in the past.AHSS is a general term used to describe various families of steels.The most common AHSS is the dual-phase steel that consists of a ferrite-martensite microstructure.These steels are characterized by high strength,good ductility,low tensile to yield strength ratio and high bake-hardenability.Another class of AHSS is the multi-phase steel which have a complex microstructure consisting of various phase constituents and a high yield to tensile strength ratio.Transformation Induced Plasticity (TRIP) steels is the latest class of AHSS steels finding interest among the U.S.automakers.These steels consist of a ferrite-bainite microstructure with significant amount of retained austenite phase and show the highest combination of strength and elongation,so far,among the AHSS in use.High level of energy absorbing capacity combined with a sustained level of high n value up to the limit of uniform elongation as well as high bake hardenability make these steels particularly attractive for safety critical parts and parts needing complex forming.Finally,martensitic steels with very high strengths are also in use for certain parts.The role of Niobium in all of the above families of advanced steels for the automotive industry will be discussed in this paper.     

单晶连铸技术的发展及其在单晶铜生产中的应用

介绍了热型连铸技术的原理、优点、关键技术和工艺参数。重点介绍了热型连铸技术在单晶铜生产中的应用，提出了该技术存在的问题及今后的改进方向和发展趋势。     

铜电解天车悬挂连接装置的试验及制造

铜电解天车专用吊具的悬挂连接装置是关键、重要部件,文中对铜电解专用吊具两种形式的悬挂连接装置的设计、实验、制造进行了比较,通过疲劳实验结果确定采用一种可靠的形式.     

汽车用高强度钢的高应变速率

0 前言 通过Split Hopkinson Bar(SHB:张力和压缩试验系统)试验,研究200～100000s-1范围内高应变速率材料的机械性能. 高应变速率是先进的高强度钢(AHSS)的重要特性之一,这是因为高强度钢大多用于易冲撞部位.Ispat Inland公司已经着手一项使一组AHSS钢产生高应变值的研究项目,其中包括双相钢和TRIP钢.由于对钢的高应变速率试验缺乏经验,而且没有标准的试验方法和可行的试验步骤,为此研究出了试验方法及其数据处理过程.本文对两种主要试验方法--伺服液压试验系统和Split Hopkinson Bar进行了比较,提供数据整理和曲线调整的过程,最后研讨了所试验的AHSS钢的高应变速率性能.