Project 81: Remanufacturing Technology of 3D printed Ti64 Alloy via Laser Welding
Contact Information
Asso. Prof. Chen Shen
Email: cshen486@sjtu.edu.cn
Project Description and Objectives
Due to limited chamber size of 3D printing machine, selected laser melting (SLM) is always considered inappropriate for manufacturing large sized part. While in aircraft manufacturing, the need of high accuracy part production by SLM technique is quite large, especially for certain large sized parts in the aircraft envelope. To breakthrough this bottleneck problem, laser welding is considered a promising method that is capable of connecting SLM produced parts together with high accuracy and low distortion. In the present project, laser welding technique is used to connect SLM produced 2.5 mm thick Ti64 alloy plates. Research objectives include: (1) achieving defect-free (especially pore-free) laser welding joint in the SLM made Ti64 plates; (2) Characterizing the microstructure of laser welded SLM produced Ti64 alloy, and its microstructural deforming feature; (3) Testing the tensile property of the laser welded joint and investigating the tensile property evolution via adjusting the laser welding parameters.
Eligibility Requirements
Microstructure Engineering background, better with experience or at least interest in additive manufacturing and welding technology.
Main Tasks
Laser welding experiments; Microstructure characterization including optimal microscopy and scanning electron microscopy; Tensile testing.
Website
School: http://smse.sjtu.edu.cn