Recent advances in the development of aerospace materials

Astonishingly 3D printing has excited the world of aerospace. This paper takes stock of the popular 3D printing processes in aerospace. Reasons for their popularity over the traditional manufacturing processes are dwelled upon. Materials developed specially for aerospace applications along with their characteristics are discussed. Ongoing activities related to 3D printing at various companies and organisations around the world are looked into. Project works in the area of extra-terrestrial printing are also highlighted. Even though 3D printing processes are operationally simple, they do have limitations in terms of the type, quality, and quantity of the materials they can handle. This paper underlines these points while discussing drawbacks of the printed components. Challenges associated with 3D printing in microgravity are also touched upon. Finally, a glimpse is taken into the future appearance of aerospace industry with 3D printing.

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3D printing in aerospace and its long-term sustainability

Binder Jet printing is an additive manufacturing technique that dispenses liquid binding agent on powder to form a two-dimensional pattern on a layer. The layers are stacked to build a physical article. Binder Jetting (BJ) can be adapted to almost any powder with high production rates and the BJ process utilizes a broad range of technologies including printing tehniques, powder deposition, dynamic binder/powder interaction, and post-processing methods. A wide variety of materials including polymers, metals, and ceramics have been processed successfully with Binder Jet. However, developing printing and post-processing methods that maximize part performance is a remaining challenge. This article presents a broad review of technologies and approaches that have been applied in Binder Jet printing and points towards opportunities for future advancement.

Binder jetting: A review of process, materials, and methods

Binder jet 3D printing—Process parameters, materials, properties, modeling, and challenges

Recent advances in ageing of 7xxx series aluminum alloys: A physical metallurgy perspective

Plasma sprayed ceramic coatings are successfully used in many industrial applications, where high wear and corrosion resistance with thermal insulation are required. In this study, various types of Al 2 O 3 –TiO 2 plasma sprayed coatings in different compositions (Al 2 O 3 –13 wt.% TiO 2 , Al 2 O 3 –40 wt.% TiO 2 and Al 2 O 3 –50 wt.% TiO 2 ) were prepared on an AISI 304L austenitic stainless steel substrate. The effects of TiO 2 addition on the properties of the coating were investigated in terms of microhardness and fracture toughness values. The results obtained from experimental work were evaluated with standard characterisation techniques. The results indicated that an increase in TiO 2 amount improves fracture toughness and lowers the microhardness values of the coatings.

Ramazan Yilmaz

Papers

Effects of TiO2 on the mechanical properties of the Al2O3–TiO2 plasma sprayed coating

Microstructural and mechanical characterization of injection molded 718 superalloy powders

Injection molding of nickel based 625 superalloy: Sintering, heat treatment, microstructure and mechanical properties

Investigation of mechanical and physical properties of several industrial rubbers

The effect of aging treatment on the fracture toughness and impact strength of injection molded Ni-625 superalloy parts