GAO Jitian, LI Qingsong, ZHANG Bo, et al. Analysis of microstructure and mechanical properties of super-size titanium alloy blades manufactured by 3D printing forming. [J]. 50(3):18-23(2020)
DOI:
GAO Jitian, LI Qingsong, ZHANG Bo, et al. Analysis of microstructure and mechanical properties of super-size titanium alloy blades manufactured by 3D printing forming. [J]. 50(3):18-23(2020) DOI: 10.7512/j.issn.1001-2303.2020.03.03.
Analysis of microstructure and mechanical properties of super-size titanium alloy blades manufactured by 3D printing forming
3D printing is a new material forming process in recent years,which is so attractive due to its high efficiency and materials saving. However so far there is a big challenge on how to control the microstructure meeting the requirements of mechanical properties, especially under the complex loading for the super-size parts. The selection of parameters in process has a remarkable impact on the final performance of the product. This paper prepared a super-size TC4 titanium alloy blades with a length of 1 450 mm by 3D printing process. The chemical composition was analyzed and the microstructure was observed. Furthermore,the correspon-ding mechanical properties were carried out. It was discussed for the microstructure to affect the properties. The results showed that the large diameter of the light spot and the improper heat treatments were used in the molding process, which made the microstructure o f the blade unevenly and resulted in the mechanical properties decreasing for the blade. In addition,the anisotropy of the mechanical properties existed in the 3D printed blade. This research is of great significance in promoting 3D printing to engineering application.
关键词
3D打印钛合金超大尺寸叶片力学性能
Keywords
3D printingtitanium alloysuper-size blademicrostructure and mechanical