Distinction of corrosion resistance of selective laser melted Al-12Si alloy on different planes

Chen, Yang; Gu, Xinhui; Dai, Nianwei; Qin, Peng; Zhang, Lai-Chang

doi:10.1016/j.jallcom.2018.03.062

Cited by 87 publications

(56 citation statements)

References 36 publications

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“…Lately, Fathi et al studied the corrosion behavior of AlSi10Mg alloy processed by direct metal laser sintering in aerated 3.5 wt% NaCl solution, more similar to seawater environment, in comparison with A360.1 die‐cast alloy. It was found that the AM material exhibits higher corrosion resistance than the die‐cast alloy mainly because of the extra fine microstructure with homogeneously distributed Si particles and the absence of Fe and Cu containing intermetallic particles, which were instead present in the die‐cast alloy, in agreement with Leon et al The key role of Si particles on corrosion mechanism was also demonstrated for the additive manufactured AlSi12 alloy . Furthermore, it was confirmed that surface finishing affects the material behavior, even though the opposite trend was reported in comparison with previous findings .…”

Section: Introductionsupporting

confidence: 79%

Effect of the T6 heat treatment on corrosion behavior of additive manufactured and gravity cast AlSi10Mg alloy

Girelli

Tocci

Conte

et al. 2019

Materials & Corrosion

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Section: Introductionsupporting

confidence: 79%

Effect of the T6 heat treatment on corrosion behavior of additive manufactured and gravity cast AlSi10Mg alloy

Girelli

Tocci

Conte

et al. 2019

Materials & Corrosion

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“…The morphologies of oxide films are dependent on their thickness (usually increase in roughness associated with increasing the thickness) and the topographies of the underlying substrates. Similar memory effects were observed between the microstructures of oxide films and Ti substrates, which is attributed to the distinct growth rates of oxides on the different phases in metallic materials . The anodic oxidation treated Ti and Ti alloys demonstrate a lot of improved properties compared with the untreated counterparts, with respect to both compositions and microstructures.…”

Section: Conventional Technologies For Surface Modificationsupporting

confidence: 58%

Surface Modification of Titanium and Titanium Alloys: Technologies, Developments, and Future Interests

2020

Self Cite

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Thanks to a considerable number of fascinating properties, titanium (Ti) and Ti alloys play important roles in a variety of industrial sectors. However, Ti and Ti alloys could not satisfy all industrial requirements; the degradation of Ti and Ti alloys always commences on their surfaces in service, which declines the performances of Ti workpieces. Therefore, with aim to further improve their mechanical, corrosion and biological properties, surface modification is often required for Ti and Ti alloys. This article reviews the technologies and recent developments of surface-modification methods with respect to Ti and Ti alloys, including mechanical, physical, chemical, and biochemical technologies. Conventional methods have limited improvement in the properties and/or restriction on the geometry of workpieces. Therefore, many advanced surfacemodification technologies have emerged in recent decades. New methods make Ti and Ti alloys have better performance and extended applications. With requirement of high surface properties in future. Understanding the mechanism in various surface-modification methods, combining the advantages of current technologies and developing new coating materials with high performance are required urgently. As such, incorporation of different surface-modification technologies with high-performance modified layers may be the mainstream of surface modifications for Ti and Ti alloys. . His current research interests focus on the metal additive manufacturing (e.g., selective laser melting, electron beam melting), titanium alloys and composites, and processing-microstructureproperties in high-performance materials.

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“…[121][122][123] The microstructural anisotropy in the SLMed parts usually leads to anisotropic mechanical properties [124][125][126] and corrosion behaviours. 127,128 For the mechanical properties, there was a larger elongation along the building direction than in the other two spatial directions due to the grain growth mainly occurring along the building direction, such as for stainless steels and CoCrW alloys. [129][130][131] Regarding the anisotropic corrosion behaviours in a Ti6Al4V alloy, the corrosion rates of the SLMed parts were relatively small and changed little with different research planes in chloride solution.…”

Section: Anisotropymentioning

confidence: 99%

“…35 , copyright Elsevier 2017) process and the acicular α′-martensitic phase is in a high-energy state with regard to corrosion, which led to a decreased uniform corrosion resistance for the XZ-plane in an acidic environment. 132 The distinction in the corrosion behaviour can also be attributed to the physical structures in the different planes, such as for Al-Si alloys 127 and nickel-based alloys. 133 The XZ-plane of the SLMed Al12Si alloy exhibited better pitting corrosion resistance compared with the XY-plane in chloride solution as displayed in Fig.…”

Section: Anisotropymentioning

confidence: 99%

Corrosion of metallic materials fabricated by selective laser melting

Kong

2019

npj Mater Degrad

186

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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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Distinction of corrosion resistance of selective laser melted Al-12Si alloy on different planes

Cited by 87 publications

References 36 publications

Effect of the T6 heat treatment on corrosion behavior of additive manufactured and gravity cast AlSi10Mg alloy

Effect of the T6 heat treatment on corrosion behavior of additive manufactured and gravity cast AlSi10Mg alloy

Surface Modification of Titanium and Titanium Alloys: Technologies, Developments, and Future Interests

Corrosion of metallic materials fabricated by selective laser melting

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