As,Sb,Sn对30CrMnSiA钢力学性能的影响

在３０ＣｒＭｎＳｉＡ钢中加入不同量的Ａｓ，Ｓｂ，Ｓｎ元素，研究了这些元素单独存在及复合存在时对钢的强度，塑性，冲击韧度及韧脆转变温度的影响规律，并用扫描电镜及俄歇能谱分析了Ａｓ，Ｓｂ，Ｓｎ导致晶界脆化的机理。     

低能量氦氖激光血管内照射疗法治疗脑梗塞疗效的初步分析

观察了低能量氦氖激光血管内照射疗法治疗脑梗塞临床效果。共分两组，第一组为治疗组，第二组为对照组，经过严格匹配比较及分析讨论，认为该治疗手段是有效的，值得临床推广应用。     

三自由度并联平台机构运动性质研究

针对目前国际上广泛研究的３－ＲＰＳ平台机构的运动性质作出分析、讨论了基面上一在转副共面或共面汇交等不同情况下的运动性质，以及该类机构在不面位形下运动性质的变化，从理论上深入地讨论了反螺旋力线矢与允许运动的关系。     

小角X光散射法测定环型聚苯乙烯无扰分子尺寸

本文采用小角Ｘ光散射技术测定了环型聚苯乙烯在θ溶剂中无扰分子尺寸；得到了分子尺寸与分子量关系的数学表达式，分析了链刚性对分子尺寸的影响，并将实验结果与相应的线型聚苯乙烯进行了对比。     

Effect of heat treatment on microstructure and properties of hot-extruded nickel-aluminum bronze

The effect of heat treatment on the microstructure and properties of a hot-extruded nickel-aluminum bronze was investigated. Experimental materials were heat treated through different processes, including quenching, normalizing, aging and annealing, and their microstructure, corrosion resistance and mechanical properties were characterized. It is found that quenching causes all β phase transformed into β phase, however, normalizing causes β phase transformed into β α and κ phases. When the quenched sample is aged, fine phase is precipitated from the as-quenched microstructure of β＇ phase. Annealing causes the transformation of β into a and κ phases. The results of mechanical property tests show that quenching, normalizing and aging improve the tensile strength and hardness of the experimental material, with a corresponding fall in elongation. Annealing raises the elongation but reduces the tensile strength and hardness. Furthermore, corrosion resistance of nickel-aluminum bronze ranks from worse to better in the following order： aged, quenched, normalized, hot-extruded and annealed. However, with the exposure time of corrosion test increasing, the difference of average corrosion rate between those nickel-aluminum bronzes tums small.