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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Application of the Box-Behnken Design in the Optimization of Laser Powder Bed Fusion of H13 Tool Steel

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Author(s):
Adriel P. Oliveira ; Gustavo Figueira ; Reginaldo T. Coelho [3] ; Claudemiro Bolfarini ; Piter Gargarella
Total Authors: 5
Document type: Journal article
Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 26, 2023-09-25.
Abstract

Parameter optimization is an important step in the laser powder bed fusion (L-PBF), since process defects greatly impact the mechanical properties of the final parts, especially in components that undergo cyclic loading, such as molds and dies. The present study used the H13 tool steel to show that it is possible to perform a good parameter optimization quickly and with relatively few samples. The Box-Behnken experiment design model was used along with the application of the response surface methodology. Laser power, scan speed, and hatch spacing were used as independent variables, and density and porosity were chosen as the response. Power and speed most influenced the responses, but the interaction between power and speed, and power and hatch also had a significant influence. New optimized samples showed lowest porosity, confirming the effectiveness of the model. Density can be used during parameter optimization without impairing the optimization quality. (AU)

FAPESP's process: 17/27031-4 - Effect of process parameters on the metallurgical characteristics of additive-manufactured alloys
Grantee:Piter Gargarella
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 16/11309-0 - The study, development and application of a hybrid process: Additive Manufacturing (AM) plus High Speed Machining/Grinding (HSM/G)
Grantee:Reginaldo Teixeira Coelho
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/15659-1 - Selective laser melting of H13 tool steel
Grantee:Adriel Pugliesi de Oliveira
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)