Accelerated Corrosion Analysis of AlSi10Mg Alloy Manufactured by Selective Laser Melting (SLM)

Lancea, Camil; Chicoș, Lucia Antoneta; Zaharia, Sebastian Marian; Pop, Mihai Alin; Semenescu, Augustin; Florea, Bogdan; Chivu, Oana Roxana

doi:10.37358/rc.18.4.6240

Cited by 4 publications

(3 citation statements)

References 12 publications

(27 reference statements)

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“…For the SLMed AlSi10Mg alloy, isolated silicon particles can gather inside the melt pool borders. [86][87][88] It is well-recognised that silicon is cathodic with respect to the aluminium matrix, which may lead to the formation of micro-galvanic couples, resulting in localised corrosion phenomena. 89,90 Meanwhile, the corrosion rate of Al-Si alloys was verified to increase with increasing silicon content in a 0.5 M NaCl solution at 25°C.…”

Section: Molten Pool Boundaries (Mpbs)mentioning

confidence: 99%

Corrosion of metallic materials fabricated by selective laser melting

Kong

2019

npj Mater Degrad

172

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Additive manufacturing is an emerging technology that challenges traditional manufacturing methods. However, the corrosion behaviour of additively manufactured parts must be considered if additive techniques are to find widespread application. In this paper, we review relationships between the unique microstructures and the corresponding corrosion behaviour of several metallic alloys fabricated by selective laser melting, one of the most popular powder-bed additive technologies for metals and alloys. Common issues related to corrosion in selective laser melted parts, such as pores, molten pool boundaries, surface roughness and anisotropy, are discussed. Widely printed alloys, including Ti-based, Al-based and Fe-based alloys, are selected to illustrate these relationships, and the corrosion properties of alloys produced by selective laser melting are summarised and compared to their conventionally processed counterparts.

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Section: Molten Pool Boundaries (Mpbs)mentioning

confidence: 99%

Corrosion of metallic materials fabricated by selective laser melting

Kong

2019

npj Mater Degrad

172

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“…Other properties of the SLM-fabricated metals and alloys such as tribological properties [ 205 , 206 , 207 , 208 , 209 , 210 , 211 , 212 , 213 , 214 , 215 , 216 , 217 , 218 , 219 ], fatigue properties [ 122 , 209 , 210 , 211 , 212 , 213 , 214 , 215 ], thermal conductivity [ 112 , 136 , 214 , 215 ], weldability [ 112 , 216 , 217 , 218 , 219 , 220 ], and corrosion [ 221 , 222 , 223 , 224 , 225 , 226 ] have also been studied recently.…”

Section: Other Propertiesmentioning

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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“…The faster cooling and solidification rate of large MPs in the more stable and compact passive layer sample, limited the coarsening of aluminum dendrites and Si precipitates in the MP regions, leading to a reduction of potential difference between Al and Si phases in that region, provoking less susceptibility of the alloy to both pitting and selective corrosion attacks [45]. In particular, as a non-equilibrium region, selective penetrating has been noted for SLM AlSi10Mg alloy, since isolated silicon particles can gather inside the melt pool borders [88,89].…”

Section: Corrosion Resistance Of Cast Aluminum Alloys Obtained By Addmentioning

confidence: 99%

Corrosion of Cast Aluminum Alloys: A Review

Labari

Biezma

Rivero

2020

Metals

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Research on corrosion resistance of cast aluminum alloys is reviewed in this article. The effect of the main microstructural features of cast aluminum alloys such as secondary dendrite arm spacing (SDAS), eutectic silicon morphology, grain size, macrosegregation, microsegregation, and intermetallic compounds is discussed. Moreover, the corrosion resistance of cast aluminum alloys obtained by modern manufacturing processes such as semi-solid and additive manufacturing are analyzed. Finally, the protective effects provided by different coatings on the aluminum cast alloys—such as anodized, plasma electrolytic oxidation (PEO), and laser—is reviewed. Some conclusions and future guidelines for future works are proposed.

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Accelerated Corrosion Analysis of AlSi10Mg Alloy Manufactured by Selective Laser Melting (SLM)

Cited by 4 publications

References 12 publications

Corrosion of metallic materials fabricated by selective laser melting

Corrosion of metallic materials fabricated by selective laser melting

Selective Laser Melting of Aluminum and Its Alloys

Corrosion of Cast Aluminum Alloys: A Review

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