Powder based laser material deposition on edges

2020 ◽  
Vol 32 (3) ◽  
pp. 032001
Author(s):  
Marie-Noemi Bold ◽  
Stefanie Linnenbrink ◽  
Norbert Pirch ◽  
Andrés Gasser ◽  
Jana Mund ◽  
...  
Keyword(s):  
Laser Material ◽  
Material Deposition

Particle velocity measurement in powder gas jets of coaxial powder nozzles for laser material deposition

2021 ◽  
Vol 33 (1) ◽  
pp. 012019
Author(s):  
Jonathan Schaible ◽  
Luis Andrea Hau ◽  
David Weber ◽  
Thomas Schopphoven ◽  
Constantin Häfner ◽  
...  
Keyword(s):  
Particle Velocity ◽  
Velocity Measurement ◽  
Laser Material ◽  
Gas Jets ◽  
Material Deposition ◽  
Particle Velocity Measurement

scholarly journals Investigation of High-Depostition-Rate Additive Manufacturing of Ti-6Al-4V via Laser Material Deposition

2021 ◽  
Author(s):  
Rebar Hama-Saleh ◽  
Kerim Yildirim ◽  
Susanne Hemes ◽  
Andreas Weisheit ◽  
Constantin Leon Häfner
Keyword(s):  
Additive Manufacturing ◽  
Hot Forging ◽  
Scanning Speed ◽  
Inert Atmosphere ◽  
High Deposition Rate ◽  
Beam Diameter ◽  
Deposition Rates ◽  
Laser Material ◽  
Aerospace Applications ◽  
Material Deposition

Ti-6Al-4V is the most prominent titanium alloy widely used e.g. for aerospace applications. Conventionally, many Ti-6Al-4V aerospace components are produced by a multi-stage hot forging process followed by subsequent machining which often generates a high amount of scrap. Additive manufacturing (AM), such as powder-based laser material deposition (p-LMD), enables parts to be made with geometric freedom and near-net-shape, but so far lacks high deposition rates. The present study proposes high-deposition-rate laser material deposition manufacturing using a large laser beam diameter and increased scanning speed to achieve deposition rates up to 5 kg/h. As Ti-6Al-4V is prone to oxygen pick-up, the process was performed in an inert atmosphere. We determined suitable process windows for tracks without fusion defects and low porosity and investigated microstructure and hardness.

Study of process window development for high deposition-rate laser material deposition by using mixed processing parameters

2015 ◽  
Vol 27 (3) ◽  
pp. 032008 ◽  
Author(s):  
Chongliang Zhong ◽  
Andres Gasser ◽  
Jochen Kittel ◽  
Thomas Schopphoven ◽  
Norbert Pirch ◽  
...  
Keyword(s):  
Deposition Rate ◽  
Processing Parameters ◽  
Process Window ◽  
High Deposition Rate ◽  
Laser Material ◽  
Material Deposition

Modeling of the geometry built-up by coaxial laser material deposition process

2013 ◽  
Vol 70 (5-8) ◽  
pp. 843-851 ◽  
Author(s):  
I. Tabernero ◽  
A. Lamikiz ◽  
E. Ukar ◽  
S. Martínez ◽  
A. Celaya
Keyword(s):  
Deposition Process ◽  
Laser Material ◽  
Material Deposition

scholarly journals Extreme High-Speed Laser Material Deposition (EHLA) of AISI 4340 Steel

Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 778 ◽  
Author(s):  
Tianci Li ◽  
Lele Zhang ◽  
Gregor Gilles Pierre Bultel ◽  
Thomas Schopphoven ◽  
Andres Gasser ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
Thermal Evolution ◽  
Laser Material ◽  
Aisi 4340 Steel ◽  
Material Deposition ◽  
Static Mechanical ◽  
Static Mechanical Properties ◽  
Conventional Laser ◽  
Aisi 4340

A variant of conventional laser material deposition (LMD), extreme high-speed laser material deposition (German acronym: EHLA) is characterized by elevated process speeds of up to 200 m/min, increased cooling rates, and a significantly reduced heat affected zone. This study focuses on the feasibility of using EHLA to apply material onto Fe-based substrate materials with AISI 4340 as a filler material. We studied how three different build-up strategies—consisting of one, three, and five consecutive deposited layers and hence, different thermal evolutions of the build-up volume—influence the metallurgical characteristics such as microstructure, porosity, hardness, and static mechanical properties. We propose a thermo-metallurgical scheme to help understand the effects of the build-up strategy and the thermal evolution on the microstructure and hardness. The tensile strength of the build-up volume was determined and is higher than the ones of forged AISI 4340 material.

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