Production of high strength Al85Nd8Ni5Co2 alloy by selective laser melting

Prashanth, K.G.; Shahabi, H. Shakur; Attar, Hooyar; Srivastava, V. C.; Ellendt, N.; Uhlenwinkel, Volker; Eckert, J.; Scudino, Sergio

doi:10.1016/j.addma.2015.01.001

Cited by 112 publications

(76 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The coefficients C ij of the C matrix for an orthotropic material are obtained by inverting the S matrix. The number of independent coefficients in the constitutive matrix for an orthotropic material is nine, the elastic constants required to describe the material are; the Young's moduli of a layer along axis 1, 2 and 3 respectively E 1 , E 2 , E 3 ; the shear moduli G 12 , G 13 , G 23 and the Poisson's ratios ν 12 , ν 13 , ν 23 . Also, the relation E i ν ji = E j ν ij (no sum on i and j) for i, j = 1, 2, 3 and i = j holds for orthotropic materials.…”

Section: Constitutive Relation Of Materialsmentioning

confidence: 99%

“…Further, deposition strategy influences the mesostructure and its effect on the fatigue life of the parts was investigated. A new aluminum based alloy for higher strength and thermal stability was prepared by selective laser melting (SLM) discussed and also the microstructural characteristics were investigated [23]. The wear properties of titanium based composite materials produced by SLM were characterized by Attar et al [24].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical Characterization of Additively Manufactured Parts by FE Modeling of Mesostructure

Somireddy

Czekanski

2017

JMMP

View full text Add to dashboard Cite

Abstract:In the present study, the mesostructure of a fused deposition modeling (FDM) processed part is considered for the investigation of its mechanical behavior. The layers of FDM printed part behave as a unidirectional fiber reinforced laminae, which are treated as an orthotropic material. The finite element (FE) procedure to find elastic moduli of a layer of the FDM processed part is presented. The mesostructure of the part that would be obtained from the process is replicated in FE models in order to find stiffness matrix of a layer. Two distinctive architectures of mesostructure are considered in the study to predict the mechanical behavior of the parts. Also, influences of layer thickness, road shape and air gap on the elastic properties of a material are investigated. Further, the parts fabricated with FDM process are treated as laminate structures. From the numerical results, it is seen that the elastic moduli are governed by mesostructures. Our laminate results are validated with experimental to demonstrate the use of classical laminate theory (CLT) for FDM parts. The elastic moduli (E 1 , E 2 , G 12 , ν 12 ) of a layer used in the analysis are calculated from FE simulations. This study establishes relationship between mesostructure and macro mechanical properties of the part.

show abstract

Section: Constitutive Relation Of Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Additively Manufactured Parts by FE Modeling of Mesostructure

Somireddy

Czekanski

2017

JMMP

View full text Add to dashboard Cite

show abstract

“…A straight line stripe-like pattern with a stripe width of 5 mm was used as the scanning strategy, with a distance of 0.012 mm between the hatches (refer to [11] for the schematics of a stripe-like pattern with rotation between two layers). The hatches have a 73 • rotation between two layers and the melting process was carried out under an argon atmosphere to avoid any possible oxygen contamination during the process [12]. The amount of oxygen is kept below 200 ppm during the entire melting process and the atmosphere of the building chamber was set to an overpressure of 10-15 mbar.…”

Section: Methodsmentioning

confidence: 99%

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

“…Compared to the XRD patterns of the initial cast rod and the GAP, the SLM samples exhibit broad diffraction peaks. The peak broadening can be a result of the presence of internal stresses in the material and/or a fine grained microstructure [12,13,15]. …”

Section: Bulk Slm Samplesmentioning

confidence: 99%

“…Selective Laser Melting (SLM), an additive manufacturing technique developed in the 1980s [12,13], offers the possibility to produce parts with intricate shapes and near net design [14,15] along with high cooling rates resulting in parts with superior properties [15]. Hence, SLM has attracted the attention of both scientific community and industries, where there is a strong demand for the production of novel materials, alloy development and production of near-net shaped materials.…”

Section: Introductionmentioning

confidence: 99%

Selective Laser Melting of Ti-45Nb Alloy

Schwab

Prashanth

Löber

et al. 2015

Metals

View full text Add to dashboard Cite

Ti-45Nb is one of the potential alloys that can be applied for biomedical applications as implants due to its low Young's modulus. Ti-45Nb (wt.%) gas atomized powders were used to produce bulk samples by selective laser melting with three different parameter sets (energy inputs). A β-phase microstructure consisting of elliptical grains with an enriched edge of titanium was observed by scanning electron microscopy and X-ray diffraction studies. The mechanical properties of these samples were evaluated using hardness and compression tests, which suggested that the strength of the samples increases with increasing energy input within the range considered.

show abstract

Production of high strength Al85Nd8Ni5Co2 alloy by selective laser melting

Cited by 112 publications

References 22 publications

Mechanical Characterization of Additively Manufactured Parts by FE Modeling of Mesostructure

Mechanical Characterization of Additively Manufactured Parts by FE Modeling of Mesostructure

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

Selective Laser Melting of Ti-45Nb Alloy

Contact Info

Product

Resources

About