Disk Laser Assisted Surface Heat Treatments Of AlSi10Mg Parts Produced By Selective Laser Melting (SLM)

Rautio, Timo; Mäkikangas, Jarmo; Mustakangas, Aappo; Mäntyjärvi, Kari

doi:10.1016/j.promfg.2019.08.014

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…Teng et al [20] combined the conventional grinding process and Magnetic Abrasive Finishing (MAF) to minimise surface roughness and enhance the surface quality of the SLMed AlSi10Mg part, and the results showed it to be bene cial. A similar response was identi ed when using disk laser-aided heat treatments combined with glass bead blasting during surface quality analysis SLMed AlSi10Mg [21]. It was also identi ed during the chemical polishing of this same material in another investigation that surface nishes largely improved by around 80% [22].…”

Section: Introductionsupporting

confidence: 63%

Multi-response Optimisation of Wire-EDM for SLMed AlSi10Mg using Taguchi-Grey Relational Theory

Ranganathan,

et al. 2024

Preprint

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The present research effort strives to optimise the multi-response during Wire Electrical Discharge Machining (Wire-EDM) of SLMed AlSi10Mg, applying Taguchi integrated Grey Relational Analysis (GRA). Selective Laser Melting (SLM) represents one of the best-known and most practicable Additive Manufacturing (AM) methods that have the prospective to serve as a replacement for many traditional production processes. Extremely intricate metallic support structures built up during SLM need more attention since they are too difficult to remove by hand. Therefore, post-processing adopting the Wire-EDM precision machining technique is performed in this study to assess the machinability of the SLMed AlSi10Mg as-built part. The multi-response optimisation used here seeks to achieve maximum material removal rate and lowest surface roughness while considering four important influencing elements (pulse On time, pulse Off time, servo voltage, and wire feed rate) at four distinct levels. Taguchi integrated Grey Relational Analysis (GRA) revealed that a pulse On time of 118 µs (Level 3), a pulse Off time of 44 µs (Level 1), a servo voltage of 60 V (Level 4), and a wire feed rate of 7 m/s (Level 4) are suggested to achieve optimal machining of SLMed AlSi10Mg. Furthermore, the derived optimisation results were diligently verified using a confirmatory experiment, and a 38.57% improvement in multi-response characteristics was found when compared to the initial Wire-EDM parameter settings. The methodology suggested in this work offers a standard approach that has the potential to be implemented for the rapid and precise prediction and optimisation of surface roughness while achieving better material removal during Wire-EDM of SLMed AlSi10Mg.

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Section: Introductionsupporting

confidence: 63%

Multi-response Optimisation of Wire-EDM for SLMed AlSi10Mg using Taguchi-Grey Relational Theory

Ranganathan,

et al. 2024

Preprint

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“…AlSi10Mg [5][6][7][8] as an aluminium-silicon alloy is used in the field of material forming because of its good castability and corrosion resistance. In recent years, researchers in the field of civil aviation widely used SLM technology [9][10][11] for its complex shape, and relevant research shows that the mechanical properties of SLM-forming alloys [12][13][14][15] are better than those of the traditional casting products [16]. At the same time, in terms of wear resistance, the most commonly used surface texture technology is laser surface texture, which can greatly improve friction performance [17,18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Spherical WC Content on the Microstructure and Properties of SiCp Aluminium Composite Material

Feng,

Li,

Wang

et al. 2023

Coatings

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In this paper, SiCp aluminium matrix composites were used as the matrix, and AlSi10Mg powder, which has a relatively similar coefficient of thermal expansion to that of the matrix, was used to prepare laser cladding Al-based coatings. The results show that the optimal process parameters are P = 4400 W, Vf = 11.3 g·min−1, and VS = 1800 mm·min−1, and, although the hardness of the coatings is lower than the hardness of the substrate, it reduces the generation of defects such as cracks and porosity. With the increase in WC reinforced phase and the hardness of the coatings, wear resistance increases, the granular cytocrysts are transformed into rod-like cytocrysts, and at the same time generate the dendritic crystals, and the undergo grain refining and generate the new phases such as Al4C3, Al4SiC4. There is no obvious defect in AlSi10Mg + 40%WC coatings, the macro morphology of the coatings is good, there is no spalling in the friction wear morphology, and the wear resistance is excellent, but there are obvious cracks and obvious spalling in the coatings of AlSi10Mg + 60%WC. Compared to the matrix hardness of 171.61 HV, the hardness of the 20%WC cladding layer increased by a factor of 1.06, while the hardness of the 40%WC cladding layer increased by a factor of 1.65 and that of the 60%WC cladding layer increased by a factor of 1.8. In terms of wear, compared to a substrate wear amount of 9.36 mg, the wear for the 20%WC cladding layer was reduced to 6.13 mg (34.5% less than the substrate), for the 40%WC cladding layer it was reduced to 4.58 mg (51.06% less than the substrate), and for the 60%WC cladding layer it was reduced to 7.35 mg (21.47% less than the substrate). The quality of the coatings decreases although the hardness is higher than that of AlSi10Mg + 40%WC. The comprehensive performance of AlSi10Mg + 40%WC coatings is optimal.

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“…Laser heat treatment (LHT) is one of these, as shown by Zhang et al in [6] where they focused on the LHT of alloy 800H and it's effect on microstructure and properties. The surface roughness of LPBF manufactured AlSi10Mg parts could also be improved utilizing LHT [7]. There are also several studies that have focused spesifically on the 316L material and on improving it's properties with the aid of laser processing.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Life and Surface Quality of Laser Powder Bed Fusion Manufactured 316L Parts by Laser Heat Treatment

Rautio

Hirvimäki

Mäkikangas

et al. 2022

2022 7th International Conference on Business and Industrial Research (ICBIR)

Self Cite

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Laser heat treatment (LHT) with two sets of energy inputs was applied to laser powder bed fusion (LPBF) manufactured 316L parts and its effects were studied in this research. LHT processed structures were compared to the as built material in terms of microstructural analysis, hardness measurements and mechanical testing, surface roughness and fatigue life. The results show that the LHT can be used to enhance the material properties of LPBF manufactured 316L parts in several ways. With the higher energy density, the surface roughness could be nearly halved while the fatigue strength was simultaneously doubled with no meaningful recorded loss in hardness or ultimate tensile strength. Microstructural evolution at the surface due to the LHT resulted in a mixture of coarse columnar dendrite and cellular grain structure. According to the findings of this work, LHT appears as an attractive tool for enhancing the properties of LBPF 316L.

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Disk Laser Assisted Surface Heat Treatments Of AlSi10Mg Parts Produced By Selective Laser Melting (SLM)

Cited by 8 publications

References 6 publications

Multi-response Optimisation of Wire-EDM for SLMed AlSi10Mg using Taguchi-Grey Relational Theory

Multi-response Optimisation of Wire-EDM for SLMed AlSi10Mg using Taguchi-Grey Relational Theory

Effect of Spherical WC Content on the Microstructure and Properties of SiCp Aluminium Composite Material

Fatigue Life and Surface Quality of Laser Powder Bed Fusion Manufactured 316L Parts by Laser Heat Treatment

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