KFU. Card publication. Investigation of LPBF A800H steel parts using Computed Tomography and Mossbauer spectroscopy

KAZAN
FEDERAL UNIVERSITY

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INVESTIGATION OF LPBF A800H STEEL PARTS USING COMPUTED TOMOGRAPHY AND MOSSBAUER SPECTROSCOPY

Form of presentation

Articles in international journals and collections

Year of publication

2020

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Authors, employees of KFU

Vagizov Farit Gabdulkhakovich, author

Gaynov Ramil Rashitovich, author

Bibliographic description in the original language

Gainov R.R. Investigation of LPBF A800H steel parts using Computed Tomography and Mossbauer spectroscopy/R.R Gainov, D.Faidel, W. Behr, F.G.Vagizov // Additive Manufacturing. - 2020. - Vol.32, Is.. - Art. � 101035.

Annotation

Laser powder bed fusion (LPBF) was applied in this study to produce a prototype of a miniaturized catalytic burner (CAB), which is a key component of high-temperature polymer electrolyte fuel cells. This prototype was characterized by its complex design with numerous channels, chambers, and thin walls. The test samples and CAB prototype were made of a heat resistant, anti-corrodible steel called «Alloy 800H« (1.4876), a material that poses problems for welding operations and especially for the LPBF process due to its strong susceptibility to hot cracking and spatters. The effects of LPBF parameter variation on preliminary test samples were investigated by nano-focus Computed Tomography (CT) and Optical microscopy to clarify the internal structure and defects for further LPBF process optimization. Mössbauer spectroscopy points out that LPBF process does not lead to either local phase separation nor oxidation of steel, which is critical factor for use of CAB at high temperatures. The sufficient LPBF parameter sets were used to manufacture the CAB prototype, which was examined by micro-CT and optics as well. The main result of the investigation is a demonstration of the technological feasibility to decrease the number and size of defects in complex LPBF-manufactured Alloy 800H constructions without changes in phase composition at high temperatures.

Keywords

catalytic burner, Laser powder bed fusion, computer tomography, optical microscopy, Mössbauer spectroscopy

The name of the journal

Additive Manufacturing

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077770675&doi=10.1016%2fj.addma.2020.101035&partnerID=40&md5=401da68bf2ed946f08e79aff12046f61

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=224055&p_lang=2

Resource files

File name	Size (MB)	Format
Investigation_of_LPBF_A800__steel_parts_using_Computed_Tomography_and_Mossbauer_spectroscopy.pdf	2,91	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Vagizov Farit Gabdulkhakovich	ru_RU
dc.contributor.author	Gaynov Ramil Rashitovich	ru_RU
dc.date.accessioned	2020-01-01T00:00:00Z	ru_RU
dc.date.available	2020-01-01T00:00:00Z	ru_RU
dc.date.issued	2020	ru_RU
dc.identifier.citation	Gainov R.R. Investigation of LPBF A800H steel parts using Computed Tomography and Mossbauer spectroscopy/R.R Gainov, D.Faidel, W. Behr, F.G.Vagizov // Additive Manufacturing. - 2020. - Vol.32, Is.. - Art. � 101035.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=224055&p_lang=2	ru_RU
dc.description.abstract	Additive Manufacturing	ru_RU
dc.description.abstract	Laser powder bed fusion (LPBF) was applied in this study to produce a prototype of a miniaturized catalytic burner (CAB), which is a key component of high-temperature polymer electrolyte fuel cells. This prototype was characterized by its complex design with numerous channels, chambers, and thin walls. The test samples and CAB prototype were made of a heat resistant, anti-corrodible steel called «Alloy 800H« (1.4876), a material that poses problems for welding operations and especially for the LPBF process due to its strong susceptibility to hot cracking and spatters. The effects of LPBF parameter variation on preliminary test samples were investigated by nano-focus Computed Tomography (CT) and Optical microscopy to clarify the internal structure and defects for further LPBF process optimization. Mössbauer spectroscopy points out that LPBF process does not lead to either local phase separation nor oxidation of steel, which is critical factor for use of CAB at high temperatures. The sufficient LPBF parameter sets were used to manufacture the CAB prototype, which was examined by micro-CT and optics as well. The main result of the investigation is a demonstration of the technological feasibility to decrease the number and size of defects in complex LPBF-manufactured Alloy 800H constructions without changes in phase composition at high temperatures.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	catalytic burner	ru_RU
dc.subject	Laser powder bed fusion	ru_RU
dc.subject	computer tomography	ru_RU
dc.subject	optical microscopy	ru_RU
dc.subject	Mössbauer spectroscopy	ru_RU
dc.title	Investigation of LPBF A800H steel parts using Computed Tomography and Mossbauer spectroscopy	ru_RU
dc.type	Articles in international journals and collections	ru_RU