Microstructure and mechanical properties of stainless steel 316L obtained by Direct Metal Laser Deposition

The microstructure of 316L stainless steel obtained by layer-by-layer direct metal laser deposition is reviewed. Mechanical tests of the samples were performed in accordance with GOST 1497-84. Studies show that changes in power of laser radiation to grow parts lead to changes in their mechanical pro...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-06, Vol.1238 (1), p.12029
Main Authors: Bykovskiy, D P, Ishkinyaev, E D, Petrovskiy, V N, Osintsev, A V, Dzhumaev, P S, Polskiy, V I, Sergeev, K L, Shchekin, A S
Format: Article
Language:English
Subjects:
Inclusions
Laser deposition
Lasers
Mechanical properties
Mechanical tests
Microstructural analysis
Microstructure
Radiation
Rapid prototyping
Stainless steel
Stainless steels
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Summary:The microstructure of 316L stainless steel obtained by layer-by-layer direct metal laser deposition is reviewed. Mechanical tests of the samples were performed in accordance with GOST 1497-84. Studies show that changes in power of laser radiation to grow parts lead to changes in their mechanical properties. The research shows dependencies between the strength characteristics of materials and the power of laser radiation. Causes of the forementioned changes are studied through the analysis of the microstructure. Nanosized inclusions of spherical shape were found in the process of studying the microstructure of materials. A study in the nature of the formation of these inclusions and their effect on the properties of the obtained material was performed.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1238/1/012029