Influence of Powder Characteristics on Processability of AlSi12 Alloy Fabricated by Selective Laser Melting

Baitimerov, R.M.; Lykov, P. A.; Жеребцов, Д. А.; Radionova, L. V.; Shultc, Alexey; Prashanth, Konda Gokuldoss

doi:10.3390/ma11050742

Cited by 112 publications

(55 citation statements)

References 52 publications

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“…Yang et al reported their results on Cu-12.5Zn-2.9Si silicon brass alloy, in which Si is helpful to form the cellular structure by precipitation of the κ-Cu7Si phase [ 144 ]. Such a fine microstructure is ascribed to the high cooling rate during SLM and will be explained in detail below [ 129 , 145 , 146 ]. The microstructure of SLM Al-Si alloys changes significantly with the Si content.…”

Section: Microstructurementioning

confidence: 99%

Selective Laser Melting of Aluminum and Its Alloys

et al. 2020

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The laser-based powder bed fusion (LBPF) process or commonly known as selective laser melting (SLM) has made significant progress since its inception. Initially, conventional materials like 316L, Ti6Al4V, and IN-718 were fabricated using the SLM process. However, it was inevitable to explore the possible fabrication of the second most popular structural material after Fe-based alloys/steel, the Al-based alloys by SLM. Al-based alloys exhibit some inherent difficulties due to the following factors: the presence of surface oxide layer, solidification cracking during melt cooling, high reflectivity from the surface, the high thermal conductivity of the metal, poor flowability of the powder, low melting temperature, etc. Researchers have overcome these difficulties to successfully fabricate the different Al-based alloys by SLM. However, there exists no review dealing with the fabrication of different Al-based alloys by SLM, their fabrication issues, microstructure, and their correlation with properties in detail. Hence, the present review attempts to introduce the SLM process followed by a detailed discussion about the processing parameters that form the core of the alloy development process. This is followed by the current research status on the processing of Al-based alloys and microstructure evaluation (including defects, internal stresses, etc.), which are dealt with on the basis of individual Al-based series. The mechanical properties of these alloys are discussed in detail followed by the other important properties like tribological properties, fatigue properties, etc. Lastly, an outlook is given at the end of this review.

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Section: Microstructurementioning

confidence: 99%

Selective Laser Melting of Aluminum and Its Alloys

et al. 2020

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“…These areas of research have not so far received attention and require further research to clarify what the limits of achievable microstructures, mechanical properties, and physical properties are. The effects of the characteristics of the powder material [ 41 ] and build direction [ 42 , 43 ] on the AM process and the properties of the resulting materials need to be thoroughly investigated as well.…”

Section: Materials For Ammentioning

confidence: 99%

Frontiers of Additively Manufactured Metallic Materials

Zadpoor

2018

Materials

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Additive manufacturing (AM) (=3D printing) has emerged during the last few years as a powerful technological platform for fabrication of functional parts with unique complex geometries and superior functionalities that are next to impossible to achieve using conventional manufacturing techniques. Due to their importance in industrial applications and the maturity of the applicable AM techniques, metallic materials are at the forefront of the developments in AM. In this editorial, which has been written as a preamble to the special issue “Perspectives on Additively Manufactured Metallic Materials”, I will highlight some of the frontiers of research on AM of metallic materials to help readers better understand the cutting edge of research in this area. Some of these topics are addressed in the articles appearing in this special issue, while others constitute worthy avenues for future research.

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“…Among many AM‐based techniques, powder bed fusion methods such as selective laser melting (SLM) and electron beam melting (EBM) are the most popular choices for fabrication of metallic materials . SLM covers a wide range of metallic compositions including Al‐/Fe‐/Ti‐/Ni‐/Co‐/Cu‐based alloys and more, which has increased its popularity and demand for manufacturing metal‐based materials, outperforming the EBM . A systematic optimization of process parameters such as laser power, hatch style, scan speed, layer thickness and hatch distance during the SLM results in near‐dense products with superior mechanical and functional (magnetic/electrochemical/electronic) properties …”

Section: Introductionmentioning

confidence: 99%

Competition between densification and microstructure of functionalmaterials by Selective Laser Melting

Singh

Ummethala

Hameed³

et al. 2020

Mat Design & Process Comms

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Functional materials like bulk metallic glasses (BMGs) and magnetocaloric materials (MCMs) are multi‐component alloys, possessing a unique combination of structural and functional properties. However, the complexity involved in manufacturing these materials limits their fabrication to rather simple shapes that are incapable of achieving full functionality. Laser‐based powder bed fusion (LPBF) or Selective Laser Melting (SLM) is an additive manufacturing (AM) technique that enables the fabrication of BMGs and MCGs in the form of complex shapes. However, high heating and cooling rates in SLM preclude complete amorphous phase formation (in BMGs) at higher energy densities that are essential for achieving a high relative density with minimal defects/pores. The optimization of process parameters and precursor powder characteristics have been the subject of intense research. The optimization is a must requirement to achieve the balance between high densification with no crystalline phase formation. The present review elaborates on the challenges concerning the SLM of BMGs and MCMs and addresses the current progress. The lack of sufficient studies on the SLM of MCMs presents several research opportunities. A summary of important outcomes and future prospects are discussed.

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Influence of Powder Characteristics on Processability of AlSi12 Alloy Fabricated by Selective Laser Melting

Cited by 112 publications

References 52 publications

Selective Laser Melting of Aluminum and Its Alloys

Selective Laser Melting of Aluminum and Its Alloys

Frontiers of Additively Manufactured Metallic Materials

Competition between densification and microstructure of functionalmaterials by Selective Laser Melting

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