EBSD技术及其在钛合金织构分析中的研究进展

Research Progress of EBSD Technology and Its Research in Texture Analysis of Titanium Alloys

电子背散射衍射(EBSD)技术是分析多晶体显微结构及组织的先进方法,其织构分析兼具XRD和TEM的优点,近年来受到了广泛的关注。钛合金具有比强度高、密度小、耐腐蚀性好等突出优点,被广泛应用于航空航天、生物医用等领域。钛合金在变形时往往产生相变和形变织构,影响各项性能,且由于钛合金存在多晶型转变,织构情况也更加复杂。概述了EBSD的工作原理和衍射花样信息,介绍了EBSD检测试样的制备,总结了该技术在不同类型钛合金织构研究中的应用和研究进展。

Electron backscatter diffraction(EBSD) is an advanced method for analyzing the microstructure of polycrystals. Its texture analysis has the advantages of both XRD and TEM, which has attracted wide attention in recent years.Ti alloys have the excellent characteristics of high specific strength, low density and corrosion resistance, which are widely used in aerospace, biomedicine, etc. The phase transformation and deformation texture often occur during deformation and heat treatment, which affects the performance of titanium alloys. And for the polycrystalline transformation, the texture of the alloy is more complex. The operational principle and diffraction pattern information of EBSD were outlined. The preparation of EBSD testing sample was introduced. The application and research progress of the technology used in different types of titanium alloy texture were summarized.