Selective laser melting 3D printing of Ni-based superalloy: understanding thermodynamic mechanisms

Xia, Mujian; Gu, Dongdong; Yu, Guangying; Dai, Donghua; Chen, Hongyu; Shi, Qimin

doi:10.1007/s11434-016-1098-7

Cited by 105 publications

(22 citation statements)

References 45 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the field of metal additive manufacturing, an analysis has been performed on processes using powder, whether powder injected, powder deposited in layers, or processes using wire [22,[33][34][35].…”

Section: Analysis Of the Environmentmentioning

confidence: 99%

Additive Manufacturing Technologies: An Overview about 3D Printing Methods and Future Prospects

et al. 2019

View full text Add to dashboard Cite

The use of conventional manufacturing methods is mainly limited by the size of the production run and the geometrical complexity of the component, and as a result we are occasionally forced to use processes and tools that increase the final cost of the element being produced. Additive manufacturing techniques provide major competitive advantages due to the fact that they adapt to the geometrical complexity and customised design of the part to be manufactured. The following may also be achieved according to field of application: lighter weight products, multimaterial products, ergonomic products, efficient short production runs, fewer assembly errors and, therefore, lower associated costs, lower tool investment costs, a combination of different manufacturing processes, an optimised use of materials, and a more sustainable manufacturing process. Additive manufacturing is seen as being one of the major revolutionary industrial processes of the next few years. Additive manufacturing has several alternatives ranging from simple RepRap machines to complex fused metal deposition systems. This paper will expand upon the structural design of the machines, their history, classification, the alternatives existing today, materials used and their characteristics, the technology limitations, and also the prospects that are opening up for different technologies both in the professional field of innovation and the academic field of research. It is important to say that the choice of technology is directly dependent on the particular application being planned: first the application and then the technology.

show abstract

Section: Analysis Of the Environmentmentioning

confidence: 99%

Additive Manufacturing Technologies: An Overview about 3D Printing Methods and Future Prospects

et al. 2019

View full text Add to dashboard Cite

show abstract

“…FEM simulations have been performed to examine the impacts of laser optical penetration depth and Linear Energy Density (LED) heat transfer and melt pool size alteration [ 69 , 70 , 71 , 72 ]. In SLM, LED is expressed as the ratio of laser power to scan speed (

), which governs the temperature distribution and melt pool dimension [ 73 ].…”

Section: Numerical Simulation Of Slmmentioning

confidence: 99%

An Overview of Additive Manufacturing Technologies—A Review to Technical Synthesis in Numerical Study of Selective Laser Melting

et al. 2020

View full text Add to dashboard Cite

Additive Manufacturing (AM) processes enable their deployment in broad applications from aerospace to art, design, and architecture. Part quality and performance are the main concerns during AM processes execution that the achievement of adequate characteristics can be guaranteed, considering a wide range of influencing factors, such as process parameters, material, environment, measurement, and operators training. Investigating the effects of not only the influential AM processes variables but also their interactions and coupled impacts are essential to process optimization which requires huge efforts to be made. Therefore, numerical simulation can be an effective tool that facilities the evaluation of the AM processes principles. Selective Laser Melting (SLM) is a widespread Powder Bed Fusion (PBF) AM process that due to its superior advantages, such as capability to print complex and highly customized components, which leads to an increasing attention paid by industries and academia. Temperature distribution and melt pool dynamics have paramount importance to be well simulated and correlated by part quality in terms of surface finish, induced residual stress and microstructure evolution during SLM. Summarizing numerical simulations of SLM in this survey is pointed out as one important research perspective as well as exploring the contribution of adopted approaches and practices. This review survey has been organized to give an overview of AM processes such as extrusion, photopolymerization, material jetting, laminated object manufacturing, and powder bed fusion. And in particular is targeted to discuss the conducted numerical simulation of SLM to illustrate a uniform picture of existing nonproprietary approaches to predict the heat transfer, melt pool behavior, microstructure and residual stresses analysis.

show abstract

“…Shoot location and metallurgical structure were shown in Figure 2. As could be seen from the figure, each layer could be easily observed and refine grains distributed evenly and densely, which accounted for high density of the base material [34][35][36][37] .…”

Section: Materials and Experiments Proceduresmentioning

confidence: 99%

Microstructure and Properties of 3D Printed Inconel 718 Joint Brazed with BNi-2 Amorphous Filler Metal

et al. 2018

View full text Add to dashboard Cite

Three dimensional (3D) printing technology has been widely used in metal manufacturing industry. This study focused on the vacuum brazing of 3D printed Inconel 718 superalloy with BNi-2 amorphous filler metal. Interfacial microstructure and element distribution revealed excellent wettability and spreadability of the filler metal as well as favorable brazability of the base material. Brazed joint could be divided into two distinct zones: isothermally solidified zone (ISZ) consisting of γ-Ni solid solution and diffusion-affected zone (DAZ) consisting of a large amount of precipitates besides γ-Ni solid solution. Microhardness reached peak values in DAZ. Although borides filled the gaps of base material's grains to restrict grain boundary sliding and restrain the expansion of gaps, but its high hardness and brittleness would cause DAZ turn into weaker region when external loads were very large. The complete diffusion of B indicated the completion of isothermally solidified process. Precipitate CrB 2 with high hardness and brittleness was the key point of reducing the joint strength. Shear strength of the brazed joint was up to 802 MPa, and fracture morphology presented a mixed ductile-brittle fracture.

show abstract

Selective laser melting 3D printing of Ni-based superalloy: understanding thermodynamic mechanisms

Cited by 105 publications

References 45 publications

Additive Manufacturing Technologies: An Overview about 3D Printing Methods and Future Prospects

Additive Manufacturing Technologies: An Overview about 3D Printing Methods and Future Prospects

An Overview of Additive Manufacturing Technologies—A Review to Technical Synthesis in Numerical Study of Selective Laser Melting

Microstructure and Properties of 3D Printed Inconel 718 Joint Brazed with BNi-2 Amorphous Filler Metal

Contact Info

Product

Resources

About