Study of Arc-wire and Laser-wire processes for the realization of Ti-6Al-4V alloy parts

Achraf Ayed ,Guénolé Bras ,Pierre Michaud ,Yannick Balcaen ,Henri Bernard ,Joël Alexis

doi:10.1051/matecconf/202032103002

Abstract

Arc-wire or laser-wire additive manufacturing seems promising because it allows large parts to be produced with significant deposition rates (ten times higher than powder bed additive manufacturing), for a lower investment cost. These additive manufacturing techniques are also very interesting for the construction or the repair of parts. A versatile 3D printing device using a Wire Arc Additive Manufacturing (WAAM) station or laser device Wire Laser Additive Manufacturing (WLAM) for melting a filler wire is developed to repair and build large titanium parts. The final objectives of the study are to optimize the process parameters to control the dimensional stability, the metallurgical and mechanical properties of the produced parts. In this paper, an experimental study is carried out to determine the first order process parameter ranges (synergic law, laser power, wire feed speed, travel speed) appropriate for these two techniques, for repair or construction parts on Ti-6 Al-4V.

Highlights

Additive Manufacturing (AM) often called 3D printing is a promising way to produce near-net shape metal parts with complex geometries and is nowadays among the most studied processes
It is quite different for the deposit obtained by Wire Laser Additive Manufacturing (WLAM) process
The operating areas of the Wire Arc Additive Manufacturing (WAAM)-CMT and WLAM processes were studied and determined to produce single Ti-6Al-4V titanium alloy deposits. This area appears to be more extensive for the WAAM process

Summary

Introduction

Additive Manufacturing (AM) often called 3D printing is a promising way to produce near-net shape metal parts with complex geometries and is nowadays among the most studied processes. Whatever the additive layer manufacturing technologies used (powder-bed, powder-feed, wire-feed, or other processes), it is always based on an input model in the form of a three-dimensional CAD model, sliced into thin layers, which will be constructed by superimposing layers by the machine or robot to create the desired final part [7]. Complementary in the aerospace industry, wire-based additive manufacturing techniques have received much less attention than powder-bed techniques despite the increasing demand for these technologies, thanks to their significant potential, for the construction of large pieces. The operating ranges of the WAAM and WLAM processes are defined first, the impact of the first order process parameters (most influential parameters [8]) on the geometry of single seams of Ti-6Al-4V deposits is studied

Objectives

Results

Conclusion