Exploration of Room Temperature Deformation of Ti407, Using Ti64 as a Datum

研究背景对低成本航空旅行的需求正在快速增长。到2035年，预计将需要增加38，050架飞机，价值超过3.63万亿英镑，以满足全球需求。为了应对航空旅行的大幅增长对环境和社会的影响，必须开发更安静、更省油的喷气发动机。钛合金因其高比强度和良好的耐腐蚀性而被用于许多关键的喷气发动机应用中。如果工程师们有能够更好地预测这类重要材料的变形和失效行为的软件工具，那么喷气发动机性能的显著提高就可以实现。然而，理解钛合金的变形和失效并不是微不足道的，因为微观结构，晶体学织构和由此产生的力学性能是各向异性和非均匀的。目的和目的本项目将探索钛的室温变形合金，目的是开发能够预测变形和失效的软件工具。该项目将利用原位微机械测试和先进的显微镜技术探索钛合金的屈服和失效。从这些实验中产生的数据将用于通知先进的晶体尺度有限元模拟，捕捉微观尺度的变形和故障。模拟和实验之间的差异将被调查，使预测能力的进一步完善。潜在的应用和效益作为该项目的一部分进行的研究是直接适用于航空航天工业，特别是喷气发动机部件的设计和寿命延长。通过提供分析钛合金变形和失效的发生和传播所需的理解和软件，这项研究有可能显着提高喷气发动机的性能。

Context of researchDemand for low cost air travel is increasing at a rapid pace. By 2035 it is expected that 38,050 additional aircraft, valued at more than £3.63 trillion, will be required to address global demand. To tackle the environmental and societal impact of this substantial increase in air travel, jet engines must be developed that are quieter and more fuel-efficient.Titanium alloys are used in many critical jet engine applications due to their high specific strength and good resistance to corrosion. Significant gains in jet engine performance could be realised if engineers had software tools capable of better predicting the deformation and failure behaviour of this important class of materials.However, understanding deformation and failure in titanium alloys is nontrivial, as microstructure, crystallographic texture and the resultant mechanical properties are both anisotropic and heterogeneous.Aims and objectivesThis project will explore room temperature deformation of titanium alloys with the aim of developing software tools capable of predicting deformation and failure. The project will explore yield and failure in titanium alloys using in situ micro-mechanical testing and advanced microscopy techniques. Data generated from these experiments will be used to inform advanced crystal scale finite element simulations that capture deformation and failure at the microscopic scale. Differences between the simulations and experiments will be investigated to enable further refinement of the predictive capability.Potential applications and benefitsThe research conducted as part of this project is directly applicable to the aerospace industry, in particular the design and life-extension of jet engine components. By providing the understanding and software required to analyse the onset and propagation of deformation and failure in titanium alloys, this research has the potential to significantly improve the performance of jet engines.