Effects of L-PBF Scanning Strategy and Sloping Angle on the Process Properties of TC11 Titanium Alloy

Abstract

TC11 titanium alloy is widely used in aerospace. To investigate the production of TC11 titanium alloy parts of high quality and performance, this paper adopts the Laser powder bed fusion (L-PBF) technique to prepare TC11 alloy specimens. We analyze in detail the effects of scanning strategy and forming angle on the forming quality and performance of TC11 alloy through a combination of theory and experiment. The results show that the upper surface quality of the strip-scanned molded parts is the highest, and the upper surface quality is better than that of the side surface under different scanning strategies. The fusion channel lap and surface adhesion powder were the main factors affecting the surface roughness. With increases in the forming angle, the surface roughness of the overhanging surface gradually decreases and the hardness gradually increases. The surface quality and hardness of the specimen are optimal when the forming angle is 90°. The research results provide the theoretical basis and technical support for L-PBF forming of TC11 titanium alloy parts.

The Contribution of the Pore Size of Titanium DC (Direct Current) Sputtered Condensation Polymer Materials to Electromagnetic Interruption and Thermal Properties

“…Equation (5) shows the change in the data of "Cb" due to titanium sputtering technique by subtracting the data of "Cb" of "untreated sample" from the data of "Cb" of the titanium sputtering specimens. Equation (6) shows the change in Cr data by titanium sputter process by subtracting the data "Cr" of the untreated specimens from the data "Cr" of the titanium sputtered specimens.…”

“…There are various studies on laser treatment for mechanical stress, the atomic layer deposition of chlorine-containing titanium-zinc oxide nanofilms, 3D-printed titanium lattice structure, titanium alloys, titanium surface modification, porous titanium, and antibacterial applications [1][2][3][4][5][6][7][8][9][10][11][12].…”

Complementary Methods for the Assessment of the Porosity of Laser Additive-Manufactured Titanium Alloy

“…The technology of additive manufacturing (AM) and, in particular, metal laser powderbed fusion (L-PBF) [1,2], also known as selective laser melting (SLM) [3] or selective electron beam melting (S/EBM) [4], has grown from the prototyping phase, today becoming an option for the production of functional or very complex parts due to its multiple advantages, including flexibility in making components, as compared to subtractive manufacturing [5,6]. The realization of complex components (integrating formerly separate parts) by AM benefits from 3D technology in which the model designed in CAD has, as a result, minimal errors [7].…”

“…The quality and performance of the products obtained by AM by means of the L-PBF method have been intensively studied, establishing that the parameters set in AM for the Ti64 method would have a major impact. In [12,13], the effects of layer thickness, preheating temperature, scanning method, phase structure, and phase transition temperature are studied, and [6] studies the surface morphology. More, reference [14] is focused on the distribution of residual stresses.…”