SA-213T91/G102异种钢接头的焊材选用

对三种焊条焊接的SA－213T91与G102异种接头的组织与性能进行了对比性试验研究，认为对于电站锅炉中的这类接头焊接，采用R417作为焊材较为理想。     

金属纳米丝力学行为研究进展

纳米尺度下结构力学行为因为表面效应和尺寸效应而与宏观尺度下结构力学行为有着本质的不同，分子动力学方法因其能通过原子运动理解结构变形细节而在纳米结构力学行为模型中得到广泛应用，本文综述了近期在纳米丝结构力学研究方面的进展，包括自由弛豫态，应力应变关系，表面效应和尺寸效应，应变率效应等。     

时效对Mn-Cu-Al三元合金的内耗、杨氏模量和力学性能的影响

测量了Mn-Cu-Al三元合金(含56-60wt-％Mn,0-3.59wt-％Al)在-150—150℃的声频内耗,发现当试样在调幅线的温度范围内进行时效时,内耗随着时效时间的增加而增加,并在特定的时间内达到极大值.时效温度越高,达到极大值的时间越短.在时效一定的时间后出现马氏体相变峰和孪晶界面弛豫峰.相变峰随着时效时间的增加而向高温移动;弛豫峰则出现在15℃左右(频率约1kHz),测得其激活能是0.56eV. 在调幅线内时效使合金的硬度、强度及脆性墙加,Al元素有增加合金的强度而降低其内耗的作用.实验结果表明,在450℃时效2—3h,可得到合金的内耗和强度的最佳综合指标. 根据内耗、模量、金相检验和X射线分析的结果,认为调幅分解后产生的富Mn区是合金发生相变和高内耗的来源,也是合金的强度增加和韧性降低的原因.     

水系锌离子电池无枝晶锌金属负极研究进展

水系锌离子电池由于具有较高的能量密度、成本低廉、安全性高和环境友好等优势,因此在智能硬件、小型电动车、大规模储能等领域具有广阔的应用前景。然而,锌金属负极存在的枝晶问题导致电池循环寿命缩短,严重制约了其实际应用。通过分析锌负极的沉积/溶解过程及其可能出现锌枝晶的路径,从人工界面层构筑、基底结构设计及电解液优化三个方面综述了无枝晶锌金属负极的近期研究进展,系统阐述了其主要设计策略及作用机制。最后,对锌金属负极未来发展方向进行了展望。     

用XML表示和发布图文混合信息

可扩展标识语言XML以其合理的数据组织结构和可扩展的特性,广泛适合于表示各类复杂的数据形式。利用XML表示和发布图文混合信息具有很重要的实际价值。基于实例介绍了使用XML表示和发布图文混合信息内容的方法和过程。     

GM（1,1）在航道驳岸沉降监测中的应用

在施工建设中,实时准确地观测、分析和预报建筑物的沉降变形对最后施工的成功与否有着很大的影响。在变形监测中经常遇到数据信息不完备的情况,而灰色系统理论则是用来解决此问题的有效方法。建立了灰色预测模型,并将其应用于苏南运河整治工程中新建驳岸的沉降监测分析和预测中,预测效果较好。     

The Progress of a Microbeam Facility in the Institute of Plasma Physics

The progress of a microbeam facility in the institute of Plasma Physics was discussed in this paper.This kind of equipment can supply single-particle beam which may be implanted into cells in micrometer-radius and measured by a new outstanding detector among global microbeam systems.Measurements by some plain targets showed that the highest current after the accelerator tube can be larger than 20μA ,the H2^ current before the second bending magnet is near 0.9μA ,the current after the second bending magnet is near 0.8μA,and the current of the beam line(after a 2-mm diameter aperture)is near 0.25nA which is enough for the single-particle microbeam experiment.It took scientists 3 months to do their microbeam experiment after setting up the qccelerator beam line and get the microbeam from this equipment.Two pre0collimators were installed between the 2-mm diameter aperture and the collimator to survey the beam.Tracks on the CR39 film ectched in the solution of NaOH showed that the beam can go through the collimator including a 10μm diameter aperture and the 3.5μm thick vacuum sealing film(Mylar).A new method,which is called optimization of the beam quality,was put forward in this paper,in order to get smaller diameter of beam-spot in microbeam system.     

The Influence of Magnetic Permeability on the Configuration of magnetic Field in Helimak Device

The Helimak of USA is a plasma physics experimental device designed and built by CASIPP.Its configuration of magnetic field is of very importance during the operation of this device.In this paper,the influence of magnetic permeability on configuration of magnetic field will be discussed due to the effect of weld metal in the vacuum vessel of Helimak,and some conclusion is useful for some engineering designs of the fusion experimental device.