Process parameters influence on mechanical properties of AlSi10Mg by SLM

Praneeth, Jammula; Venkatesh, Sriram; Krishna, L Sivarama

doi:10.1016/j.matpr.2022.12.222

Cited by 18 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, the printing parameters were selected as follows: a laser power of 350 W, scanning speed of 1850 mm/s, hatch spacing of 130 μm, and layer thickness of 30 μm, as shown in Table 1 . The authors took the standard process package of pure AlSi10Mg processed by SLM 125HL (laser power of 350 W, scanning speed of 1650 mm/s, hatch spacing of 130 μm, and layer thickness of 30 μm) and the literature as a reference [ 9 , 10 , 11 , 12 ]. A multidirectional meander scan strategy was used in which the rotation angle between neighboring layers was 67° to reduce the residual stress and improve the crack-growth resistance, as shown in Figure 3 a. Cubic samples with the dimensions 8 mm × 8 mm × 8 mm were prepared for the Vickers-hardness and wear-resistance tests.…”

Section: Methodsmentioning

confidence: 99%

Influence of Ni Contents on Microstructure and Mechanical Performance of AlSi10Mg Alloy by Selective Laser Melting

Hui

Zhang

et al. 2023

Materials

View full text Add to dashboard Cite

To improve the tensile strength and wear resistance of AlSi10Mg alloys, a novel in situ synthesis method of selective laser melting (SLM) was used to fabricate the Ni-reinforced AlSi10Mg samples. The eutectic Si networks formed around the α-Al crystals by diffusion and transportation via Marangoni convection in the SLM process. Moreover, the XRD and TEM results verified that the Al3Ni nanoparticles were created by the in situ reaction of the Ni and aluminum matrix in the Ni/AlSi10Mg samples. Therefore, the microstructure of the Ni-containing alloys was constituted by the α-Al + Si network + Al3Ni phases. The dislocations accumulated at the continuous Si network boundaries and cannot transmit across the dislocation walls inside the Si network. SEM results revealed that the continuity and size of eutectic Si networks can be tailored by adjusting the Ni contents. Furthermore, the Al matrix also benefited from the Al3Ni nanoparticles against the dislocation movement due to their excellent interfacial bonding. The 3Ni-AlSi10Mg sample exhibited high mechanical properties due to the continuous Si networks and Al3Ni nanoparticles. The tensile strength, elongation, Vickers hardness, friction coefficient, and wear volumes of the 3Ni-AlSi10Mg samples were 401.15 ± 7.97 MPa, 6.23 ± 0.252%, 144.06 ± 0.81 HV, 0.608, 0.11 mm3, respectively, which outperformed the pure AlSi10Mg samples (372.05 ± 1.64 MPa, 5.84 ± 0.269%, 123.22 ± 1.18 HV, 0.66, and 0.135 mm3).

show abstract

Section: Methodsmentioning

confidence: 99%

Influence of Ni Contents on Microstructure and Mechanical Performance of AlSi10Mg Alloy by Selective Laser Melting

Hui

Zhang

et al. 2023

Materials

View full text Add to dashboard Cite

show abstract

“…This approach effectively reduced the number of experiments while ensuring a comprehensive consideration of various factors. The Taguchi method [23] is a widely utilized design of experiments (DOE) method that can be used for parameter design and optimization. This study performed design optimization using a Taguchi experimental design to examine the thermal effects of input variables on the thermal structural deformation of a TMM.…”

Section: Evaluation Procedures and Analysis Of Datamentioning

confidence: 99%

Study on the Thermal Characteristics of a Turning and Milling Machine Using Taguchi-FEM with ANOVA-Driven Search

Wu,

Hsieh,

Kuo

et al. 2024

Preprint

View full text Add to dashboard Cite

Turning and milling machines (TMMs) have diverse and complex heat sources, which pose challenges to understanding and accurately predicting their thermal behavior. This study established a transient 3D thermal model of the TMM using the Finite Element Method (FEM) to predict the temporal evolution of temperature and deformation fields. The FEM predictions were then compared with the experimental results from five machining scenarios for model validation, demonstrating accurate prediction of temperature and deformation with average errors of 0.9% and 5.59 μm, respectively. A comprehensive procedure was proposed to explore the thermal characteristics of TMMs and identify thermally critical components. This study employed a Taguchi-FEM approach along with sensitivity analysis to evaluate the significant contributing boundary conditions of TMMs to tool center point (TCP) deformation in the X, Y, and Z directions. An ANOVA-driven search was further proposed to identify thermal key points significantly impacting TCP deformation across directions and time intervals. Integrating both methods facilitated the identification of the TMM thermal critical regions. The spindle TCP’s thermal critical regions were most significantly influenced by the spindle component, followed by the milling cutter shaft component and then the right side of the base bed. Similarly, for the sub-spindle TCP, the highest impact came from the sub-spindle components, followed by the right side of the base bed and the milling cutter shaft components. The proposed procedure identified the significant regions for assisting evaluation in TMMs and reduced the number of required temperature monitoring points while optimizing their placements to minimize measurement costs.

show abstract

“…where P is the laser power, V s is the scanning speed, h d is the hatch distance, and L T is the layer thickness. At low layer thickness, a VED of about 50 J/mm 3 leads to high density, good surface roughness and mechanical performance [52,53]. At high layer thickness, typically chosen for high productivity, the employment of a high laser power corresponds to the selection of lower hatch distance resulting in a comparable VED [54].…”

Section: Fabricationmentioning

confidence: 99%

Additive Manufacturing for Lightweighting Satellite Platform

et al. 2023

View full text Add to dashboard Cite

Lightweight structures with an internal lattice infill and a closed shell have received a lot of attention in the last 20 years for satellites, due to their improved stiffness, buckling strength, multifunctional design, and energy absorption. The geometrical freedom typical of Additive Manufacturing allows lighter, stiffer, and more effective structures to be designed for aerospace applications. The Laser Powder Bed Fusion technology, in particular, enables the fabrication of metal parts with complex geometries, altering the way the mechanical components are designed and manufactured. This study proposed a method to re-design the original satellite structures consisting of walls and ribs with an enclosed lattice design. The proposed new structures must comply with restricted requirements in terms of mechanical properties, dimensional accuracy, and weight. The most challenging is the first frequency request which the original satellite design, based on traditional fabrication, does not satisfy. To overcome this problem a particular framework was developed for locally thickening the critical zones of the lattice. The use of the new design permitted complying with the dynamic behavior and to obtain a weight saving maintaining the mechanical properties. The Additive Manufacturing fabrication of this primary structure demonstrated the feasibility of this new technology to satisfy challenging requests in the aerospace field.

show abstract

Process parameters influence on mechanical properties of AlSi10Mg by SLM

Cited by 18 publications

References 26 publications

Influence of Ni Contents on Microstructure and Mechanical Performance of AlSi10Mg Alloy by Selective Laser Melting

Influence of Ni Contents on Microstructure and Mechanical Performance of AlSi10Mg Alloy by Selective Laser Melting

Study on the Thermal Characteristics of a Turning and Milling Machine Using Taguchi-FEM with ANOVA-Driven Search

Additive Manufacturing for Lightweighting Satellite Platform

Contact Info

Product

Resources

About