Recovery Technology Features of Aerospace Parts by Layering Synthesis

Смелов, В. Г.; Сотов, А В; Агаповичев, А. В.

doi:10.4028/www.scientific.net/kem.684.316

Cited by 11 publications

(5 citation statements)

References 3 publications

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“…Fig. 2 shows the scheme of implementation of the process of making the samples using LENS-w method [14]. Samples for testing were manufactured on the equipment of CAM technology common use center (RFMEFI59314X0003).…”

Section: Materials and Experimental Methodsmentioning

confidence: 99%

Experimental implementation of direct laser alloying

2017

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A laser beam, as a source of energy, has been lately widely used in additive technologies for the manufacture of parts for the power engineering industry. One of the promising methods of additive manufacturing based on laser overlay welding of metal wires is the so-called Laser Engineering Net Shape. This work studies the structure and mechanical properties of the sample manufactured using a direct laser alloying unit designed for 07Х18Н10Т stainless steel grade alloying. The allocation map of chemical elements has been examined in this work.

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Section: Materials and Experimental Methodsmentioning

confidence: 99%

Experimental implementation of direct laser alloying

2017

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“…Today, it is one of the most dynamically developing directions of "digital" manufacture. These technologies accelerate research and development, solve the problems of pre-production, and in some cases actively applied for the production of a functional product [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Research of the possibility of using an electrical discharge machining metal powder in selective laser melting

Golubeva

Сотов

Агаповичев

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Research of the possibility of using an electrical discharge machining metal powder in selective laser melting Abstract. In this paper the research of a Ni-20Cr-10Fe-3Ti (heat-resistant) alloy metal powder conducted for use in a selective laser melting technology. This metal powder is the slime after electric discharge machining. The technology of cleaning and melting the powder discussed in this article. As a control input of the powder, immediately before 3D printing, dimensional analysis, surface morphology and the internal structure of the powder particles after the treatment were examined using optical and electron microscopes. The powder granules are round, oval, of different diameters with non-metallic inclusions. The internal structure of the particles is solid with no apparent defects. The content of the required diameter of the total volume of test powder granules was 15%. X-ray fluorescence analysis of the powder materials carried out. The possibility of powder melting was investigated in the selective laser melting machine 'SLM 280HL'. A selection of the melting modes based on the physical properties of the Ni-20Cr-10Fe-3Ti alloy, data obtained from similar studies and a mathematical model of the process. Conclusions on the further investigation of the possibility of using electric discharge machining slime were made.

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“…Products require little or no finishing operations. As presented in [1][2], surface of sintered objects has a roughness due to particle morphology. At the same time, the internal stress in products depending on the sequence of sintering, especially in case of thin-walled products, may result in the deformation of products during following store or treatment [3][4].…”

Section: Introductionmentioning

confidence: 99%

The Study of the Ageing Impact on Workability and Hardness of the Samples Made of Alloy VV751P (Ni-15Co-10Cr) after Selective Laser Sintering

Balaykin

Nosova

Galkina

2017

KEM

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Work is focused on study of workability changing of heat resistant nickel-based Ni-15Co-10Cr alloy produced by selective laser sintering from metal powder. Experimental research of HRC hardness changing was provided on plate samples 2х10х30 mm after sintering and typical heat treatment for this alloy. Heat treatment was: annealing at temperature of 1,000oС during 1.5 hours, and then at the temperature of 1,180oC for 2.5 h – 3 h. After that samples were treated in a furnace for 50 – 60 minutes at the temperature of 1,050oС. Then they were cooled-off to the temperature of 1,000oС during 50 – 60 minutes. After that they were further quenched at ambient temperature. After quenching the samples were subjected to ageing at the temperature of 850oC during 3, 6, 9, 12 and 15 hours. The bending and measurement of triangle height was proposed for work ability assessment of samples. Increased hardness was found with duration of ageing. Work ability grew up with duration of ageing but where was a gap of workability for 9 hours ageing. Calibration of sintered parts and samples are recommended to perform after quenching and ageing at 850oC no longer 6 hours.

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Recovery Technology Features of Aerospace Parts by Layering Synthesis

Cited by 11 publications

References 3 publications

Experimental implementation of direct laser alloying

Experimental implementation of direct laser alloying

Research of the possibility of using an electrical discharge machining metal powder in selective laser melting

The Study of the Ageing Impact on Workability and Hardness of the Samples Made of Alloy VV751P (Ni-15Co-10Cr) after Selective Laser Sintering

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