Friction welding of Al–12Si parts produced by selective laser melting

Prashanth, Konda Gokuldoss; Damodaram, R.; Scudino, Sergio; Wang, Zhi; Rao, K. Prasad; Eckert, J.

doi:10.1016/j.matdes.2014.01.026

Cited by 125 publications

(73 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The microstructure of the 316L sample fabricated by selective laser melting is shown in Figure 5. It displays a fine cellular/dendritic structure, similar to most of the samples prepared by SLM during to the fast cooling rates observed during the process [14][15][16][17][18][19]. This also explains the microstructural differences between the SLM prepared and conventionally cast/powder metallurgical microstructures.…”

Section: Resultssupporting

confidence: 55%

Characterization of 316L Steel Cellular Dodecahedron Structures Produced by Selective Laser Melting

et al. 2016

View full text Add to dashboard Cite

Abstract:The compression behavior of different 316L steel cellular dodecahedron structures with different density values were studied. The 316L steel structures produced using the selective laser melting process has four different geometries: single unit cells with and without the addition of base plates beneath and on top, and sandwich structures with multiple unit cells with different unit cell sizes. The relation between the relative compressive strength and the relative density was compared using different Gibson-Ashby models and with other published reports. The different aspects of the deformation and the mechanical properties were evaluated and the deformation at distinct loading levels was recorded. Finite element method (FEM) simulations were carried out with the defined structures and the mechanical testing results were compared. The calculated theory, simulation estimation, and the observed experimental results are in good agreement.

show abstract

Section: Resultssupporting

confidence: 55%

Characterization of 316L Steel Cellular Dodecahedron Structures Produced by Selective Laser Melting

et al. 2016

View full text Add to dashboard Cite

show abstract

“…A hatch style rotation of 73°has been employed for all the samples. The laser power and laser scan speeds were varied to have a constant energy density of 55 J/mm 3 in the first set of experiments, and in the other case the laser scan speed was kept constant at 1455 mm/s and the laser power was varied from 320 to 80 W. A detailed information about the fabrication of Al-12Si SLM specimens is reported elsewhere [15,16]. The density of the samples was measured by the Archimedes principle, and optical microscopy (OM) images along the cross section of the tensile bars [17][18][19] were taken using a Zeiss Axioskope 40.…”

Section: Methodsmentioning

confidence: 99%

Is the energy density a reliable parameter for materials synthesis by selective laser melting?

Prashanth

Scudino

Maity

et al. 2017

Materials Research Letters

Self Cite

322

104

View full text Add to dashboard Cite

The effective fabrication of materials using selective laser melting depends on the process parameters. Here, we analyse the suitability of the energy density to represent the energy transferred to the powder bed, which is effectively used to melt the particles and to produce the bulk specimens. By properly varying laser power and speed in order to process the powder at constant energy density, we show that the equation currently used to calculate the energy density gives only an approximate estimation and that hatch parameters and material properties should be considered to correctly evaluate the energy density. IMPACT STATEMENTAl-12Si SLM samples were fabricated at constant energy density. The laser power and laser scan speed combination variation was used to demonstrate the significant changes needed with energy density equation. ARTICLE HISTORY

show abstract

“…In the present melt, the Si from Al-12Si contributes to form a supersaturated solid solution of Al. 51 However, having a similar amount of free residual Si in both the TNMC SLM and Al-12Si SLM samples and considering the formation of the Al 6 MoTi phase, it can be postulated that the melt becomes deficient in Ti due to the diffusion of some Ti into Al. Also, it is believed that during the laser melting process, mixing of the melt takes place due to the convection phenomena.…”

Section: B Mechanical and Tribological Propertiesmentioning

confidence: 99%

Processing of Al–12Si–TNM composites by selective laser melting and evaluation of compressive and wear properties

et al. 2015

View full text Add to dashboard Cite

Al-12Si (80 vol%)-Ti 52.4 Al 42.2 Nb 4.4 Mo 0.9 B 0.06 (at.%) (TNM) composites were successfully produced by the selective laser melting (SLM). Detailed structural and microstructural analysis shows the formation of the Al 6 MoTi intermetallic phase due to the reaction of the TNM reinforcement with the Al-12Si matrix during SLM. Compression tests reveal that the composites exhibit significantly improved properties (;140 and ;160 MPa higher yield and ultimate compressive strengths, respectively) compared with the Al-12Si matrix. However, the samples break at ;6% total strain under compression, thus showing a reduced plasticity of the composites. Sliding wear tests were carried out for both the Al-12Si matrix and the Al-12Si-TNM composites. The composites perform better under sliding wear conditions and the wear rate increases with increasing loads. At high loads, the wear takes place at three different rates and the wear rate decreases with increasing experiment duration.

show abstract

Friction welding of Al–12Si parts produced by selective laser melting

Cited by 125 publications

References 21 publications

Characterization of 316L Steel Cellular Dodecahedron Structures Produced by Selective Laser Melting

Characterization of 316L Steel Cellular Dodecahedron Structures Produced by Selective Laser Melting

Is the energy density a reliable parameter for materials synthesis by selective laser melting?

Processing of Al–12Si–TNM composites by selective laser melting and evaluation of compressive and wear properties

Contact Info

Product

Resources

About