Effect of Build Orientation on the Corrosion Behavior and Mechanical Properties of Selective Laser Melted Ti-6Al-4V

Sui, Qingxuan; Li, Peizhen; Wang, Kunlun; Yin, Xiaotian; Liu, Lingyu; Zhang, Yuying; Zhang, Qingxia; Wang, Shenghai; Wang, Li

doi:10.3390/met9090976

Cited by 26 publications

(20 citation statements)

References 41 publications

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“…The anodizing process reduced the passive current density and heat treatment increased β phase. There was a difference in corrosion resistance offered by horizontally build and vertically build specimens due to difference in amount of α and β phases in cross sectional and longitudinal direction, which shows that anisotropic nature of DMLS material will affect its corrosion resistance [33] . R. Żebrowski et al [34] used surface treatment shot peening to improve surface quality of DMLS Ti-6Al-4V and reported that shot peening at low frequencies was found to be effective in reducing surface roughness and improved its corrosion resistance.…”

Section: Characteristics Of Ti-6al-4vmentioning

confidence: 99%

A Review on Mechanical and Corrosion Behaviour of DMLS Materials

Subrahmanyam

Prasad²,

Rao

2020

EST

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Direct Metal Laser Sintering (DMLS) is an Additive Manufacturing (AM) technique in which the metal powder will be sintered in selected regions as per 3D CAD file in stack manner in order to produce a three dimensional object with less effort, in less possible time and with minimal wastage of metal. In this paper most widely used DMLS metal powders mechanical and corrosion properties were analyzed and the effect of post processes on the material properties were discussed. The objective of the paper is to fuse the works done so far and to identify gaps to identify the key areas of this technology. The promising and successful application of this revolutionary technology in various sectors like biomedical, aerospace and automotive was also discussed based on material behaviour at different operating conditions. This review would help researchers to find challenges in this booming technology. As per the materials point of view future research prospective was suggested in depth in light of present review.

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Section: Characteristics Of Ti-6al-4vmentioning

confidence: 99%

A Review on Mechanical and Corrosion Behaviour of DMLS Materials

Subrahmanyam

Prasad²,

Rao

2020

EST

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“…Moreover, some studies also worked on the effect of the ti6al4v alloy track trajectories on mechanical properties in direct metal deposition [ 4 ], the effect of microstructure, crystallographic texture and morphological texture on the mechanical properties of 3D printed 316L stainless steel [ 5 ] and the effect of scanning strategy on grain structure and crystallographic texture of Inconel 718 processed by selective laser melting [ 6 ]. Some researchers also worked on the effect of build orientation on the corrosion behavior and the mechanical properties of Selective Laser Melted Ti-6AI-4V [ 7 ]. The influence of heat treatments on heat affected zone cracking of gas tungsten arc welded additive manufactured alloy 718 was also investigated [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

A New Approach in the Design of Microstructured Ultralight Components to Achieve Maximum Functional Performance

et al. 2021

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In the energy and aeronautics industry, some components need to be very light but with high strength. For instance, turbine blades and structural components under rotational centrifugal forces, or internal supports, ask for low weight, and in general, all pieces in energy turbine devices will benefit from weight reductions. In space applications, a high ratio strength/weight is even more important. Light components imply new optimal design concepts, but to be able to be manufactured is the real key enable technology. Additive manufacturing can be an alternative, applying radical new approaches regarding part design and components’ internal structure. Here, a new approach is proposed using the replica of a small structure (cell) in two or three orders of magnitude. Laser Powder Bed Fusion (L-PBF) is one of the most well-known additive manufacturing methods of functional parts (and prototypes as well), for instance, starting from metal powders of heat-resistant alloys. The working conditions for such components demand high mechanical properties at high temperatures, Ni-Co superalloys are a choice. The work here presented proposes the use of “replicative” structures in different sizes and orders of magnitude, to manufacture parts with the minimum weight but achieving the required mechanical properties. Printing process parameters and mechanical performance are analyzed, along with several examples.

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“…Therefore, their insertion into the human skeleton may result in the absence of strong bonds between the bone and implant. Commonly, the Ti6Al4V alloy is one of the most widely used in the medical world, since it significantly increases the strength, ductility and fatigue resistance of the implants, which could prevent their fracture [2,7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Successive Chemical and Thermochemical Treatments on Surface Features of Ti6Al4V Samples Manufactured by SLM

González

Armas

Negrin

et al. 2021

Metals

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Ti6Al4V samples, obtained by selective laser melting (SLM), were subjected to successive treatments: acid etching, chemical oxidation in hydrogen peroxide solution and thermochemical processing. The effect of temperature and time of acid etching on the surface roughness, morphology, topography and chemical and phase composition after the thermochemical treatment was studied. The surfaces were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and contact profilometry. The temperature used in the acid etching had a greater influence on the surface features of the samples than the time. Acid etching provided the original SLM surface with a new topography prior to oxidation and thermochemical treatments. A nanostructure was observed on the surfaces after the full process, both on their protrusions and pores previously formed during the acid etching. After the thermochemical treatment, the samples etched at 40 °C showed macrostructures with additional submicro and nanoscale topographies. When a temperature of 80 °C was used, the presence of micropores and a thicker anatase layer, detectable by X-ray diffraction, were also observed. These surfaces are expected to generate greater levels of bioactivity and high biomechanics fixation of implants as well as better resistance to fatigue.

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Effect of Build Orientation on the Corrosion Behavior and Mechanical Properties of Selective Laser Melted Ti-6Al-4V

Cited by 26 publications

References 41 publications

A Review on Mechanical and Corrosion Behaviour of DMLS Materials

A Review on Mechanical and Corrosion Behaviour of DMLS Materials

A New Approach in the Design of Microstructured Ultralight Components to Achieve Maximum Functional Performance

Influence of Successive Chemical and Thermochemical Treatments on Surface Features of Ti6Al4V Samples Manufactured by SLM

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