scholarly journals Numerical Estimation of the Geometry of the Deposited Layers during Direct Laser Deposition of Multi-Pass Walls

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1972
Author(s):  
Ilya Udin ◽  
Ekaterina Valdaytseva ◽  
Nikita Kislov
Keyword(s):  
Laser Radiation ◽  
Mechanical Engineering ◽  
Complex Geometry ◽  
Calculated Data ◽  
Laser Deposition ◽  
Laser Radiation Intensity ◽  
Calculation Algorithm ◽  
Direct Laser Deposition ◽  
Bead Formation ◽  
Direct Laser

Direct laser deposition (DLD) is a promising additive technology that allows for the rapid and cheap production of metal parts of complex geometry in various sectors of mechanical engineering. Thick-walled metal structures occupy a significant part in mechanical engineering. The purpose of this study was to develop and test an algorithm for predicting the geometry of deposited multi-pass walls. To achieve this goal, the main interrelated processes involved in the formation of a multi-pass wall were described—the process of laser radiation propagation, the process of heat transfer and the process of bead formation. To construct the calculation algorithm, five characteristic types of beads are identified. For these five types, the features of the bead formation and the features of the laser radiation intensity distribution are described. The calculated data were verified. A good match of the calculated data with the geometry of the deposited walls from AISI321 steel, Inconel718 and Ti-6Al-4V alloys was obtained.

Direct Laser Deposition with Transversal Oscillating of Laser Radiation

2018 ◽  
Author(s):  
G.A. Turichin ◽  
E.V. Zemlyakov ◽  
M.V. Kuznetsov ◽  
K.D. Babkin ◽  
A.I. Kurakin ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Laser Deposition ◽  
Direct Laser Deposition ◽  
Direct Laser

scholarly journals Influence of Laser Radiation Transversal Oscillation on a Quality Formation at the Direct Laser Deposition

2018 ◽  
Vol 1109 ◽  
pp. 012052
Author(s):  
A. Kurakin ◽  
V. Murzin ◽  
V. Karpov ◽  
M. Kuznetsov ◽  
E. Zemlyakov ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Laser Deposition ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Quality Formation

scholarly journals A versatile model for the prediction of complex geometry in 3D direct laser deposition

2016 ◽  
Vol 307 ◽  
pp. 292-300 ◽  
Author(s):  
O. Nenadl ◽  
W. Kuipers ◽  
N. Koelewijn ◽  
V. Ocelík ◽  
J.Th.M. De Hosson
Keyword(s):  
Complex Geometry ◽  
Laser Deposition ◽  
Direct Laser Deposition ◽  
Direct Laser

Structure and Phase Composition of Ti-6Al-4V Samples Produced by Direct Laser Deposition

2019 ◽  
Vol 822 ◽  
pp. 467-472
Author(s):  
S.A. Shalnova ◽  
Galina Panova ◽  
Nadine Buczak
Keyword(s):  
Titanium Alloy ◽  
Phase Composition ◽  
Laser Radiation ◽  
Phase Analysis ◽  
Laser Deposition ◽  
X Ray ◽  
Direct Laser Deposition ◽  
Β Phase ◽  
Direct Laser

In this article has carried out X-ray phase analysis of the samples obtained using direct laser deposition. Two groups of samples were studied: the first one was obtained with oscillation of laser radiation, the second one – without. The investigations have shown that in the process of direct laser deposition, the α+β phase is formed from a Ti-6Al-4V titanium alloy with oscillation of laser radiation.

A high strength low alloy steel fabricated by direct laser deposition

Vacuum ◽  
2019 ◽  
Vol 161 ◽  
pp. 225-231 ◽  
Author(s):  
Qiang Wang ◽  
Song Zhang ◽  
Chunhua Zhang ◽  
Jianqiang Wang ◽  
M. Babar Shahzad ◽  
...  
Keyword(s):  
Alloy Steel ◽  
High Strength ◽  
Laser Deposition ◽  
Low Alloy Steel ◽  
Direct Laser Deposition ◽  
Direct Laser

Self-Sufficient Modeling of Single Track Deposition of Ti–6Al–4V With the Prediction of Capture Efficiency

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Christopher Katinas ◽  
Shunyu Liu ◽  
Yung C. Shin
Keyword(s):  
Molten Pool ◽  
Deposition Process ◽  
Capture Efficiency ◽  
Laser Deposition ◽  
Single Track ◽  
Profile Error ◽  
Track Geometry ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Traditional Manufacturing

Understanding the capture efficiency of powder during direct laser deposition (DLD) is critical when determining the overall manufacturing costs of additive manufacturing (AM) for comparison to traditional manufacturing methods. By developing a tool to predict the capture efficiency of a particular deposition process, parameter optimization can be achieved without the need to perform a costly and extensive experimental study. The focus of this work is to model the deposition process and acquire the final track geometry and temperature field of a single track deposition of Ti–6Al–4V powder on a Ti–6Al–4V substrate for a four-nozzle powder delivery system during direct laser deposition with a LENS™ system without the need for capture efficiency assumptions by using physical powder flow and laser irradiation profiles to predict capture efficiency. The model was able to predict the track height and width within 2 μm and 31 μm, respectively, or 3.3% error from experimentation. A maximum of 36 μm profile error was observed in the molten pool, and corresponds to errors of 11% and 4% in molten pool depth and width, respectively. Based on experimentation, the capture efficiency of a single track deposition of Ti–6Al–4V was found to be 12.0%, while that from simulation was calculated to be 11.7%, a 2.5% deviation.

Determining the Optimal Mode of the Inconel 718 Alloy Deposition at a Direct Laser Deposition Plant

2021 ◽  
Vol 1037 ◽  
pp. 3-12
Author(s):  
Maxim Oleynik ◽  
Alexander I. Khaimovich ◽  
Andrey V. Balaykin
Keyword(s):  
Tensile Strength ◽  
Energy Density ◽  
Target Function ◽  
Laser Deposition ◽  
Steep Ascent ◽  
Inconel 718 Alloy ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Optimal Mode ◽  
Deposition Mode

The paper describes determining the optimal direct laser deposition mode when processing the results of a two-factor experiment by the steep ascent method. The dependence of the ultimate tensile strength on the volumetric energy density and the lateral pitch was chosen as the target function.

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