Effect of process parameters on micro hardness, bulk hardness and porosity of LENSTM deposited SS 316L alloy

Sarma, I. Kartikeya; Srinivas, V.; Subbu, S. Kanmani

doi:10.1016/j.matpr.2021.02.268

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…During the deposition of AISI 316L thin walls, Majumdar et al [24] observed that porosity decreased with increasing travel speed and was almost independent from laser power. On the contrary, Kartikeya Sarma et al [26] in the deposition of AISI 316L cylinder (Φ10 × 25 mm 3 ) showed that the porosity was mainly influenced by laser power but the effect of travel speed and powder mass flow rate was less significative. Savitha et al [27] highlighted that the porosity was significantly influenced by the interaction between laser power and travel speed.…”

Section: Introductionmentioning

confidence: 94%

Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition

Salmi,

Piscopo,

Atzeni

et al. 2024

Preprint

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Laser-Powder Directed Energy Deposition (DED-LB/Powder) is an additive manufacturing process that is gaining popularity in the manufacturing industry due to its numerous advantages, particularly in repairing operations. However, its application is often limited to case studies due to some critical issues that need to be addressed, such as the degree of internal porosity. This paper investigates the effect of the most relevant process parameters of the DED-LB/Powder process on the level and distribution of porosity. Results indicate that, among the process parameters examined, porosity is less affected by travel speed and more influenced by powder mass flow rate and laser power. Additionally, a three-dimensional finite element transient model was introduced, which was able to predict the development and location of lack-of-fusion pores along the building direction.

show abstract

Section: Introductionmentioning

confidence: 94%

Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition

Salmi,

Piscopo,

Atzeni

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…During the deposition of AISI 316L single-track thin wall, Majumdar et al [26] observed that porosity decreased with increasing travel speed and was almost independent from laser power. On the contrary, Kartikeya Sarma et al [28], for the deposition of AISI 316L cylinder (Φ10 × 25 mm 3 ), showed that the porosity was mainly influenced by laser power, but the effects of travel speed and powder mass flow rate were less significant. Savitha et al [29] highlighted that the porosity was significantly influenced by the interaction between laser power and travel speed.…”

Section: Introductionmentioning

confidence: 96%

Evaluation of Porosity in AISI 316L Samples Processed by Laser Powder Directed Energy Deposition

Salmi,

Piscopo,

Pilagatti

et al. 2024

JMMP

View full text Add to dashboard Cite

Directed energy deposition-laser beam/powder (DED-LB/Powder) is an additive manufacturing process that is gaining popularity in the manufacturing industry due to its numerous advantages, particularly in repairing operations. However, its application is often limited to case studies due to some critical issues that need to be addressed, such as the degree of internal porosity. This paper investigates the effect of the most relevant process parameters of the DED-LB/Powder process on the level and distribution of porosity. Results indicate that, among the process parameters examined, porosity is less affected by travel speed and more influenced by powder mass flow rate and laser power. Additionally, a three-dimensional finite element transient model was introduced, which was able to predict the development and location of lack-of-fusion pores along the building direction.

show abstract

Structure and properties of Si ₃ N ₄ -based diamond/MoS ₂ -TiN composite films

Lu,

Zhang,

Bai

et al. 2024

Fullerenes, Nanotubes and Carbon Nanostructures

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Effect of process parameters on micro hardness, bulk hardness and porosity of LENSTM deposited SS 316L alloy

Cited by 3 publications

References 15 publications

Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition

Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition

Evaluation of Porosity in AISI 316L Samples Processed by Laser Powder Directed Energy Deposition

Structure and properties of Si ₃ N ₄ -based diamond/MoS ₂ -TiN composite films

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Effect of process parameters on micro hardness, bulk hardness and porosity of LENSTM deposited SS 316L alloy

Cited by 3 publications

References 15 publications

Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition

Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition

Evaluation of Porosity in AISI 316L Samples Processed by Laser Powder Directed Energy Deposition

Structure and properties of Si 3 N 4 -based diamond/MoS 2 -TiN composite films

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Structure and properties of Si ₃ N ₄ -based diamond/MoS ₂ -TiN composite films