论文标题
量化氧对近α钛合金微型机械性能的影响
Quantifying the effect of oxygen on micro-mechanical properties of a near-alpha titanium alloy
论文作者
论文摘要
原子探针断层扫描（APT），电子探针微分析（EPMA）和纳米吸引力被用来表征由钛合金时代834制造的服务机喷射发动机压缩盘上富含氧气的层。氧气量和与机械性能通过NanoineNosententation Lestud进行的变化相关。通过相关硬度映射，EPMA和电子反向散射衍射（EBSD）探索了氧浓度，微结构，晶体取向和硬度之间的关系。已经研究了微观结构对氧气入口的作用，并使用APT直接在纳米级上直接观察到沿电势/β界面的氧气进入。
Atom probe tomography (APT), electron probe microanalysis (EPMA) and nanoindentation were used to characterise the oxygen-rich layer on an in-service jet engine compressor disc, manufactured from the titanium alloy TIMETAL 834. Oxygen ingress was quantified and related to changes in mechanical properties through nanoindentation studies. The relationship between oxygen concentration, microstructure, crystal orientation and hardness has been explored through correlative hardness mapping, EPMA and electron backscatter diffraction (EBSD). The role of microstructure on oxygen ingress has been studied and oxygen ingress along a potential alpha/ beta interface was directly observed on the nanoscale using APT.
