Effect of reheating zones in additive manufacturing by means of electron beam metal wire deposition method

Gaponova, D. A.; Rodyakina, R. V.; Gudenko, A. V.; Слива, А. П.; Щербаков, А. В.

doi:10.1016/j.cirpj.2020.01.001

Cited by 6 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Beam splitting can be accomplished with an electron gun deflecting system by applying a specially shaped signal to the deflecting coils. By adjusting the parameters of the deviation signal, you can adjust the amplitude of the deviation and the power of the each heating source [15,16].…”

Section: Theorymentioning

confidence: 99%

Investigation of the Thermal State of Parts to Justify the Possibility of Additive Forming of Nitinol Blanks <i>In Situ</i>

Goncharov

Chulkov

Titarev

2021

KEM

View full text Add to dashboard Cite

In this paper, the substantiation of the possibility of additive forming of nitinol billets by simultaneous surfacing of two titanium and nickel wires with an electron beam in vacuum is given. The method of mathematical modeling shows the possibility of forming several molten pools of liquid metal on the bead being deposited immediately behind the main pool for remelting the formed material. The modes of the electron beam for the formation of the main and two additional remelting pools due to the deflection of the beam are determined taking into account the technological capabilities of the installation. The residence time of the metal in the liquid state is calculated for various additive forming modes. Remelting makes it possible to increase the residence time in the liquid state by a multiple of the molten pools number. This significantly improves the conditions for mixing the raw materials and reduces the heterogeneity of the material.

show abstract

Section: Theorymentioning

confidence: 99%

Investigation of the Thermal State of Parts to Justify the Possibility of Additive Forming of Nitinol Blanks <i>In Situ</i>

Goncharov

Chulkov

Titarev

2021

KEM

View full text Add to dashboard Cite

show abstract

“…In the future, it will be essential to define rigorous design criteria, as well as describe steps that will increase the scope and reduce production costs and time based on AM technology. The range and complexity of the different AM technologies are vast (Gaponova et al, 2020). Companies, regardless of their size, cannot simply keep track and understand the latest developments.…”

Section: Introductionmentioning

confidence: 99%

Additive manufacturing a powerful tool for the aerospace industry

Khorasani¹,

Ghasemi

Rolfe

et al. 2021

RPJ

179

View full text Add to dashboard Cite

Purpose Additive manufacturing (AM) offers potential solutions when conventional manufacturing reaches its technological limits. These include a high degree of design freedom, lightweight design, functional integration and rapid prototyping. In this paper, the authors show how AM can be implemented not only for prototyping but also production using different optimization approaches in design including topology optimization, support optimization and selection of part orientation and part consolidation. This paper aims to present how AM can reduce the production cost of complex components such as jet engine air manifold by optimizing the design. This case study also identifies a detailed feasibility analysis of the cost model for an air manifold of an Airbus jet engine using various strategies, such as computer numerical control machining, printing with standard support structures and support optimization. Design/methodology/approach Parameters that affect the production price of the air manifold such as machining, printing (process), feedstock, labor and post-processing costs were calculated and compared to find the best manufacturing strategy. Findings Results showed that AM can solve a range of problems and improve production by customization, rapid prototyping and geometrical freedom. This case study showed that 49%–58% of the cost is related to pre- and post-processing when using laser-based powder bed fusion to produce the air manifold. However, the cost of pre- and post-processing when using machining is 32%–35% of the total production costs. The results of this research can assist successful enterprises, such as aerospace, automotive and medical, in successfully turning toward AM technology. Originality/value Important factors such as validity, feasibility and limitations, pre-processing and monitoring, are discussed to show how a process chain can be controlled and run efficiently. Reproducibility of the process chain is debated to ensure the quality of mass production lines. Post-processing and qualification of the AM parts are also discussed to show how to satisfy the demands on standards (for surface quality and dimensional accuracy), safety, quality and certification. The original contribution of this paper is identifying the main production costs of complex components using both conventional and AM.

show abstract

“…In selective laser melting (SLM), the decisive role of the heat input was studied on alloys as follows: the Inconel 718 [11], Ti6Al4V alloy [12], AISI 316 stainless steel and AlSi10Mg alloys [13]. Factoring the importance of heat and mass transfer conditions in EBAM layer deposition, the entire near net shape article formation was reported on the AISI 316 [14,15] and Al-6wt.%Mg alloys [16]. Controlling the EBAM deposition parameters ensured forming thin-walled heat resistant nickel alloy articles with the desired shape [17,18] and microstructure [19], as well as complex-shaped sandwich-panels from Ti6Al4V [20].…”

Section: Introductionmentioning

confidence: 99%

Heat Input Effect on Microstructure and Mechanical Properties of Electron Beam Additive Manufactured (EBAM) Cu-7.5wt.%Al Bronze

et al. 2021

View full text Add to dashboard Cite

Electron beam additive wire-feed deposition of Cu-7.5wt.%Al bronze on a stainless-steel substrate has been carried out at heat input levels 0.21, 0.255, and 0.3 kJ/mm. The microstructures formed at 0.21 kJ/mm were characterized by the presence of both zigzagged columnar and small equiaxed grains with 10% of Σ3 annealing twin grain boundaries. No equiaxed grains were found in samples obtained at 0.255 and 0.3 kJ/mm. The zigzagged columnar ones were only retained in samples obtained at 0.255 kJ/mm. The fraction of Σ3 boundaries reduced at higher heat input values to 7 and 4%, respectively. The maximum tensile strength was achieved on samples obtained with 0.21 kJ/mm as tested with a tensile axis perpendicular to the deposited wall’s height. More than 100% elongation-to-fracture was achieved when testing the samples obtained at 0.3 kJ/mm (as tested with a tensile axis coinciding with the wall’s height).

show abstract

Effect of reheating zones in additive manufacturing by means of electron beam metal wire deposition method

Cited by 6 publications

References 9 publications

Investigation of the Thermal State of Parts to Justify the Possibility of Additive Forming of Nitinol Blanks <i>In Situ</i>

Investigation of the Thermal State of Parts to Justify the Possibility of Additive Forming of Nitinol Blanks <i>In Situ</i>

Additive manufacturing a powerful tool for the aerospace industry

Heat Input Effect on Microstructure and Mechanical Properties of Electron Beam Additive Manufactured (EBAM) Cu-7.5wt.%Al Bronze

Contact Info

Product

Resources

About