17-4PH沉淀硬化不锈钢氮离子注入及其复合改性的研究

采用N+注入，N-C-O共渗结合N+注入的表面复合改性方法，探索强化17－4PH钢表面的有效途径，该方法赋予基体表面一定深度的改性范围与低摩擦系数，因而强化效果达到最佳。同时还探索了不同时效温度下，基体心部硬度变化的规律。     

轴承钢GCr15的恒温相变超塑性

研究了ＧＣｒ１５钢在Ａｃ１相变点附近的恒温超塑性特性与变形温度的关系。结果表明，与一些材料一样，该钢也存在恒温相变超塑性现象。当初始应变速率为２．５×１０＾－４ｓ＾－１时，经预调质处理的ＧＣｒ１５钢试样，在７４８℃进行超塑性拉伸试验获得最大延伸率达８００％，流动应力为２４ＭＰａ。与已有的同类研究结果相比，其延伸率提高了２００％以上。     

一种并行工程信息集成框架的构建

本文针对现有的并行工程信息集成框架对并行工程只提供消极支持的问题展开讨论，通过技术域，支撑域，管理域三个域的建立与分析，特别是对ＣＦ积极支持方法进行探讨，提出一种推拉式的建模思想，实现对并行设计的监督和控制。并依此思想建立了一个ＣＥ信息集成框架。     

热处理对Ti-Al-Sn-Zr-Mo-Si-X系合金性能的影响

研究了热处理对3种Ti-Al-Sn-zr-Mo-Si-X（X为ⅤB，ⅥB族一种或几种元素）系合金（A、B、C）室温拉伸性能的影响，对优化合金的热处理制度及优选热处理制度下3种合金的疲劳裂纹扩展行为也进行了探讨。结果表明，优选热处理制度下A、C合金的裂纹扩展速率差别不大，B合金560℃时效处理后，裂纹扩展速率比540℃时效处理的小。在相同热处理制度下，比较3种合金裂纹扩展速率的结果表明，IgΔK在1．2～1．5范围内B合金的抗疲劳裂纹扩展性能较优。     

Multidisciplinary optimization of gas-quenching process

Distortion as a result of the quenching process is predominantly due to the thermal gradient and phase transformations within the component. Compared with traditional liquid quenching, the thermal boundary conditions during gas quenching are relatively simple to control. By adjusting the gas-quenching furnace pressure, the flow speed, or the spray nozzle configuration, the heat-transfer coefficients can be designed in terms of both the component geometry and the quenching time. The purpose of this research is to apply the optimization methodology to design the gas-quenching process. The design objective is to minimize the distortion caused by quenching. Constraints on the average surface hardness, and its distribution and residual stress are imposed. The heat-transfer coefficients are used as design variables. DEFORM-HT is used to predict material response during quenching. The response surface method is used to obtain the analytical models of the objective function and constraints in terms of the design variables. Once the response surfaces of the objective and constraints are obtained, they are used to search for the optimum heat-transfer coefficients. This process is then used instead of the finite-element analysis. A one-gear blank case study is used to demonstrate the optimization scheme.     

TA2／A3爆炸复合界面微观断裂机制的SEM原位研究SCIEI

借助ＳＥＭ对ＴＡ２／Ａ３爆炸复合界面（包括细小波状界面，中波界面及具有再入射流熔块的大波界面）的微观断裂机制进行了动态研究。结果表明，爆炸复合界面微观断裂机制是：微裂纹在波头夹杂或再入射流熔块内及熔块和基体界面处萌生，并在裂尖应力场作用下沿与外载垂直方向扩展。同时，沿ＴＡ２／Ａ３界面产生微裂纹并在外载作用下，相互连接而扩展。     

铝合金熔体旋转喷吹除气净化过程模拟

采用计算机模拟方法对铝合金熔体旋转喷吹除气净化过程的温度场以及流场进行分析。结果表明,在转杆内部放置一个导气管,可以显著降低气体温度,从而可以有效地解决旋转喷头由于熔剂因高温变软而堵塞的问题;旋转速度和进气流量对铝合金熔体旋转喷吹除气净化效果具有重要影响,应该根据具体情况选择合适的工艺参数。熔池为方形结构时,气体主要从对角处出去,而远离对角处的体积分数却显著降低,甚至可能发生吸气。     

Improved corrosion protection of aluminum alloys by electrodeposited silanes

Organofunctional silanes recently have emerged as outstanding, environmentally friendly corrosion protectors for metal substrates, compared with conventional chromate treatments. A simple immersion technique is typically used to coat the metal surface with silane films. However, the thickness and uniformity of the films are uncontrolled in this process. This paper proposes a new deposition technique for the silane films on the metal surface, i.e., by electrodeposition. Hydrolyzed silanes are water-soluble, ionized molecules, so they can be deposited on metals by electrodeposition. Various combinations of silane mixtures were tested at different voltages, pH values, bath concentrations, and exposure times on panels of alloy aluminum and mirror-polished ferro-plate. The surface structure was characterized by scanning electron microscopy (SEM) and ellipsometry. The resistance of the film to corrosion was investigated by direct current (DC) polarization and electrochemical impedance spectroscopy (EIS) techniques. Electrodeposition results in a more organized and uniform film with fewer pores, compared with immersed or dipped films. This paper was presented at the 2nd International Surface Engineering Congress sponsored by ASM International, on September 15–17, 2003, in Indianapolis, Indiana, and appears on pp. 320–26 of the Proceedings.     

等误差直线逼近非圆曲线节点计算新方法

传统的等误差直线逼近法从被逼曲线的端点开始计算节点.文章在此基础上提出一种非圆曲线节点计算新方法,以被逼曲线曲率半径最小点开始,按等误差法求取节点,再根据曲线规律对节点重新进行排序,输出节点坐标值.用该种方法逼近曲线,在逼近误差等于等误差法逼近误差的条件下,节点数少于等误差法求得的节点数,文中用C语言编写新方法求取节点程序,并与传统方法进行比较,最后用曲线方程进行验证,结论正确,具有实际意义.     

基于模糊多目标决策的供应链合作伙伴选择

采用梯形模糊数将定性的多目标准则合理量化，根据逼近理想点排序方法（TOPSIS）思想，依据各方案与理想解的贴近度大小对合作伙伴进行排序，从而得到最优合作伙伴。最后通过算例表明，该方法简单、有效。