scholarly journals Finite Element Analysis of Interaction of Laser Beam with Material in Laser Metal Powder Bed Fusion Process

Materials ◽  
2018 ◽  
Vol 11 (5) ◽  
pp. 765 ◽  
Author(s):  
Guang Fu ◽  
David Zhang ◽  
Allen He ◽  
Zhongfa Mao ◽  
Kaifei Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Laser Beam ◽  
Metal Powder ◽  
Fusion Process ◽  
Powder Bed Fusion ◽  
Element Analysis ◽  
Powder Bed

scholarly journals Carbon Particle In-Situ Alloying of the Case-Hardening Steel 16MnCr5 in Laser Powder Bed Fusion

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 896
Author(s):  
Matthias Schmitt ◽  
Albin Gottwalt ◽  
Jakob Winkler ◽  
Thomas Tobie ◽  
Georg Schlick ◽  
...  
Keyword(s):  
Laser Beam ◽  
Mechanical Strength ◽  
Carbon Content ◽  
Metal Powder ◽  
Case Hardening ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Carbon Particles ◽  
Case Hardening Steel

The carbon content of steel affects many of its essential properties, e.g., hardness and mechanical strength. In the powder bed fusion process of metals using a laser beam (PBF-LB/M), usually, pre-alloyed metal powder is solidified layer-by-layer using a laser beam to create parts. A reduction of the carbon content in steels is observed during this process. This study examines adding carbon particles to the metal powder and in situ alloying in the PBF-LB/M process as a countermeasure. Suitable carbon particles are selected and their effect on the particle size distribution and homogeneity of the mixtures is analysed. The workability in PBF-LB is then shown. This is followed by an evaluation of the resulting mechanical properties (hardness and mechanical strength) and microstructure in the as-built state and the state after heat treatment. Furthermore, potential use cases like multi-material or functionally graded parts are discussed.

Finite Element Analysis of Laser Welding Induced Alignment Distortion During Pigtail of Pump Lasers

2003 ◽  
Author(s):  
M. Labudovic ◽  
M. Cook
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Laser Beam ◽  
Laser Welding ◽  
Beam Energy ◽  
Element Model ◽  
Element Analysis ◽  
3D Finite Element ◽  
Energy Delivery ◽  
Pump Lasers

Laser Welding Induced Alignment Distortion (WIAD) during pigtailing of pump lasers has been numerically modeled and studied experimentally. The results demonstrate that the WIAD can be minimized by properly controlling the laser beam energy delivery. A 3D finite element model has been developed for effectively predicting the WIAD.

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