Microstructure refinement of a dual phase titanium alloy by severe room temperature compression

Microstructure refinement of a dual phase titanium alloy, Ti-3AI-4.5V-5Mo, by severe room temperature compression was investigated. Nanocrystalline grains were observed in the sample with 75% reduction, in which the grain sizes of a phase and β phase were approximately 50 and 100 nm. Conversely, the average thicknesses of a phase and β phase in as-received microstructure were measured to be 0.7 and 0.5 μm, respectively. TEM and XRD methods were used to analyze the microstructure and texture changes after severe deformation. Microstructure refinement was deduced to the complex interaction among slip dislocations in the a phase, the complex interaction among slip dislocations and martensites in the β phases. In addition, the interaction between the a phase and the β phase also contributed to the microstructure refinement.

X射线荧光光谱分析方法测定锰硅合金中钛的质量分数

将一定粒度的粉末试样压制成片状试料后,用VXQ-150A X射线荧光光谱仪进行测试分析,在真空介质中,试片经激发源产生的X射线的X光管照射后,发射出元素组成的特征谱线,分光晶体按照布拉格衍射定律将特征谱线分解成所需要的分析线,分析线的积分强度与含量成正比。