Al-Ti-B晶粒细化剂的组织与细化效果

以较为常见的8011铝合金为研究对象,分析了Al-Ti-B中间合金对其组织及性能的作用机理,结果表明:Al-Ti-B对合金组织具有细化作用,同时对其性能也有一定的影响,最后对试验结果进行了分析与总结。     

超宽谱钛宝石飞秒激光器的研究进展

超宽谱钛宝石飞秒激光器的出现是近年来飞秒激光技术的重要进展之一.文章对近年来国际上出现的几种主要的钛宝石超宽谱飞秒激光器的原理、结构及优缺点进行了介绍,给出了其发展趋势.     

铸造铝合金的晶粒细化与太硼添加剂

对铝合金熔体中Ｔｉ细化晶粒的４种方法进行了分析，提出钛棚添加剂可以替代传统的ＡＩ－Ｔｉ中间合金，成为铝合金Ｔｉ元素的主要添加形式，并给出了在ＺＬ２０１和ＺＬ１０１Ａ合金中使用钛棚添加剂的生产试验数据及熔化操作要点。     

Fracture Behavior of TiNi Based Shape Memory Alloy Cold-rolled Tube

The microstructures and interracial characteristics of matrices at the inwalls and the out-walls of the cold-rolled tube with different amounts of deformation were investigated by the scanning electronic microscope （SEM）, the optical microscope （OM）, and the transmission electronic microscope （TEM） techniques. It was observed that as the amount of deformation increases, the flaws nucleate at the out-walls of the cold rolled tube, the stress-induced martensites change from （111 ） type Ⅰ twins to （011） type Ⅱ twins and then to （100） compound twins, nanocrystals and bulk amorphisation happen, the high density dislocation causes stress concentration at the out-walls of the Ti50Ni50 cold-rolled tube, and then precipitates its fracture, and the Ti2Ni particles strengthen the grain boundaries and curb the dislocation movements during plastic deformation. The inhomogeneity level of the grains in the Ti50Ni50 alloy plays an important role on the fracture of the Ti50Ni50 cold rolled tube.     

A380的材料及工艺选择

介绍A380飞机的材料及工艺的选择原则,强调了减重、成本、性能及维修上的综合平衡。     

Effects of Mo on the Microstructure and Hydrogen Sorption Properties of Ti-Mo Getters

The effects of Mo on the microstructure evolution, porosity and hydrogen sorption properties of Ti-Mo getters are investigated in this work. The results show that the addition of Mo prolongs the densification process of Ti-Mo getters and results in a significant amount of sintered pores. With the Mo content increasing, the porosity of getters firstly increases reaching the maximum value as it at- tains about 7.5wt.%, and then drops. At the room temperature, the hydrogen sorption property of getters increases progressively with the Mo content increasing, but the tendency is not very clear before its content lies below 2.5wt.%. When the Mo content achieves about 7.5wt.%, the hydrogen sorption property proves to be the best. The discussion is made about the above mentioned phenomena inclusive of hydrogen sorption properties of getters under different activation conditions (from 500-750 ℃).     

Synthesis of TiNi/Ti2Ni Composite Particles in Molten Salts

A new process of synthesizing TiNi/Ti2Ni composite particles, high temperature molten salts method, is introduced. This method uses molten salts as a reaction medium that does not take part in the chemical reaction and can be easily dissolved in rinsing water. According this method, the composite particles were prepared in molten salts at 700 ℃-900 ℃. By means of differential scanning calorimetry （DSC）, the reversible martensific transformation of TiNi particles in these composite particles was contemned.     

钛及其合金电化学氧化工艺研究

本文研究了用电化学氧化方法在钛及其合金表面形成耐摩擦粘结及抗接触腐蚀氧化膜的工艺;分析讨论了电解液组成及工艺参数对氧化膜性能的影响。