Nondestructive Testing of Defects in Additive Manufacturing Titanium Alloy Products

Speaker:
yang, ping hua; China

Authors:
Gao, X.X.; AECC Beijing Institute of Aeronautical Materials; China
Liang, J.; AECC Beijing Institute of Aeronautical Materials; China
Shi, Y.W.; AECC Beijing Institute of Aeronautical Materials; China
Xu, N.; AECC Beijing Institute of Aeronautical Materials; China
Yang, P.H.; AECC Beijing Institute of Aeronautical Materials; China

ID: ECNDT-0431-2018
Session: Additive Manufacturing – ultrasound
Room: H1
Date: 2018-06-12
Time: 09:20 - 09:40

Laser additive manufacturing (LAM) TC11 titanium alloy formed by direct deposition method was experimentally investigated. Relationship between microstructures and ultrasonic testing results was developed, and characteristics of defects were determined on the basis of metallography and NDT results. Detection capability of different NDT methods were analyzed, as well. The results show that gas pore is one of the main defect types in LAM products. The optimum detection direction for ultrasonic testing is deposition direction. Quantitative results of defects by ultrasonic testing are greater than their real size. Detection capability of radiographic testing is affected by thickness of specimens greatly. The study results are of great reference value to research of NDT method for LAM products.