Optimizing LPBF-parameters by Box-Behnken design for printing crack-free and dense high-boron alloyed stainless steel parts

Martins Freitas, Brenda Juliet; Yuuki Koga, Guilherme; Arneitz, Siegfried; Bolfarini, Claudemiro; de Traglia Amancio-Filho, Sergio

doi:10.1016/j.addlet.2024.100206

Additive Manufacturing Letters

2024

DOI: 10.1016/j.addlet.2024.100206

|View full text |Cite

Optimizing LPBF-parameters by Box-Behnken design for printing crack-free and dense high-boron alloyed stainless steel parts

Brenda Juliet Martins Freitas,

Guilherme Yuuki Koga,

Siegfried Arneitz

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 5 publications

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Exploring the efficiency of powder reusing as a sustainable approach for powder bed additive manufacturing of 316L stainless steel

Jandaghi,

Moverare

2024

Materials & Design

View full text Add to dashboard Cite

Exploring the efficiency of powder reusing as a sustainable approach for powder bed additive manufacturing of 316L stainless steel

Jandaghi,

Moverare

2024

Materials & Design

View full text Add to dashboard Cite

An approach to process parameter optimisation for beta titanium alloys

Rudolph,

Dicks,

Becker

2024

MATEC Web Conf.

View full text Add to dashboard Cite

This study examined the influence of process parameters on porosity and mechanical properties in Laser Powder Bed Fusion (LPBF) of Beta 21S (Ti–15Mo–3Nb–3Al–0.2Si) and Ti5553 (Ti-5Al-5V-5Mo-3Cr) titanium alloys, with Ti64 (Ti-6Al-4V) as the reference material. Using the volumetric energy density – a function of laser power, scan speed, hatch spacing, and layer thickness – to inform the design space, a means to achieve optimal process parameters which minimise porosity content was explored. By employing a constrained design space and response surface methodology, windows of process parameters were identified. Regression models developed for predicting porosity achieved R-squared values of 0.822 for Ti64, 0.859 for Beta 21S, and 0.788 for Ti5553, indicating strong data fit. The model for Ti64 was validated against five literature sources, with four predictions falling within confidence bands and showing an error range of 0.07 to 0.48%. For Beta 21S and Ti5553, the combined error range for validation samples was 0.24 to 0.45%. Optimal volumetric energy density parameters were suggested to maximise relative density. Vickers hardness was assessed and compared favourably to existing literature. Significant variation was found amongst hardness data, suggesting that LPBF parameters influence mechanical performance. Further investigation is recommended to understand the effects of thermal history on the observed hardness behaviour.

show abstract

Factorial-experimental investigation of LPBF regimes for VZh159 nickel superalloy grain structure and structural strength optimization

Kyarimov,

Statnik,

Sadykova

et al. 2024

Front. Mater.

View full text Add to dashboard Cite

This study investigates the optimization of Laser Powder Bed Fusion (LPBF) process parameters to enhance the mechanical properties of the Russian Ni superalloy VZh159 (a close analogue of IN718) material that is commonly used in critical aerospace applications, and the corresponding studies of the grain structure within and near the melt pool formed by a single laser scan line. Through a factorial experimental approach, the influence of laser power and scanning speed on the tensile strength, yield strength, and ductility was determined. Metallurgically sound samples (based on hydrostatic weighing data and microscopy, with practically no pores detected) were obtained with nine combinations of power and scanning speed, showing significant variation in the tensile strength (in the 1,040–1,220 MPa range) and yield strength (in the 560–1,100 MPa range), which correlated with the cross-sectional area of the single scan line (for example, the depth of the melt pool varied in the range 410–530 µm), while the average grain size (deduced from Electron Backscatter Diffraction (EBSD) images) remained statistically unchanged. Key findings indicate that the optimal LPBF parameters are a laser power of 250 W, a scanning speed of 600 mm/s, and a hatch distance of 0.12 mm, which together yield the best combination of high tensile strength and ductility. This study provides new insights into the effects of LPBF parameters on the microstructure, particularly the formation of the γ′ strengthening phase and its correlation with mechanical performance. The research addresses a critical gap in understanding the relationship between LPBF processing conditions and the resulting microstructural and mechanical properties, offering potential improvements in manufacturing efficiency and material performance.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Optimizing LPBF-parameters by Box-Behnken design for printing crack-free and dense high-boron alloyed stainless steel parts

Cited by 5 publications

References 34 publications

Exploring the efficiency of powder reusing as a sustainable approach for powder bed additive manufacturing of 316L stainless steel

Exploring the efficiency of powder reusing as a sustainable approach for powder bed additive manufacturing of 316L stainless steel

An approach to process parameter optimisation for beta titanium alloys

Factorial-experimental investigation of LPBF regimes for VZh159 nickel superalloy grain structure and structural strength optimization

Contact Info

Product

Resources

About