精品文档---下载后可任意编辑LSPSF 法流变重力成形的试验讨论的开题报告Title: Experimental Study on LSPSF Method for Rheological Gravity FormingIntroduction:The LSPSF (Large Strain Path-dependent Shear Flow) method is a new forming technique for metallic alloys, which combines the advantages of traditional forming methods and has unique features, such as excellent material utilization, low forming pressures, and high accuracy. The LSPSF method is particularly suitable for the forming of complex-shaped workpieces from difficult-to-form materials such as titanium alloys.In this study, we will investigate the LSPSF method coupled with gravity forming, which combines the gravitational force and the viscous flow of the metal to achieve forming. The objective of this study is to explore the effects of process parameters such as forming pressure, deformation temperature, and gravity field intensity on the formability of titanium alloy using the LSPSF method.Methodology:1. Material: Commercially pure titanium (CP Ti) will be used in the study.2. Experimental setup: The forming equipment will consist of a cylindrical die and a punch-mounted on a hydraulic press. The die will be heated by an induction heating system, and a gravity field will be created by natural gravity.3. Experiment design: The forming process will follow the LSPSF method by imposing a large shear strain to the material through the combination of punch motion and the natural gravity force. A full factorial design of experiments will be used to investigate the influence of process parameters such as forming pressure, deformation temperature, and gravity field intensity on the formability of the titanium alloy.4. Evaluation of results: The formed samples will be evaluated using X-ray diffraction analysis, scanning electron microscopy, and mechanical testing to determine the microstructure, surface quality, and mechanical properties.精品文档---下载后可任意编辑Expected Outcome:The LSPSF coupled with gravity forming method may provide a new and efficient way of processing titanium alloys. By optimizing the process parameters, we expect to achieve high-quality components with reduced forming pressure and improved material utilization. The experimental results may also provide insights into the deformation mechanisms of titanium alloys during LSPSF forming.Conclusion:The proposed study aims to investigate the LSPSF method coupled with gravity forming for titanium alloy forming. This study will provide a systematic evaluation of the effects of process parameters on the formability of titanium alloy components, laying the foundation for the optimization of the LSPSF forming process. The outcomes of this research may lead to the development of new and efficient processing techniques for titanium alloys.
