Friction stir processing of austenitic stainless steel cold spray coating deposited on 304L stainless steel substrate: feasibility study

Friction stir processing of austenitic stainless steel cold spray coating deposited on 304L stainless steel substrate: feasibility study

In this work, the feasibility test of friction stir processing (FSP) of 1.5-mm-thick austenitic stainless steel cold spray coating deposited on 304L stainless steel substrate was performed using tungsten carbide tool. Applied FSP parameters (advance speed 50 mm/min, rotation speed 300 rpm, axial for...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology Vol. 115; no. 7-8; pp. 2379 - 2393
Main Authors: Perard, Thomas, Sova, Alexey, Robe, Hugo, Robin, Vincent, Zedan, Yasser, Bocher, Philippe, Feulvarch, Eric
Format: Journal Article
Language:English
Published: London Springer London 01-08-2021
Springer Nature B.V
Springer Verlag
Subjects:
Austenitic stainless steels
Axial forces
CAE) and Design
Carbide tools
Computer-Aided Engineering (CAD
Engineering
Engineering Sciences
Feasibility studies
Friction stir processing
Grain size
Industrial and Production Engineering
Mechanical Engineering
Media Management
Microhardness
Microstructure
Optimization
Original Article
Parameters
Recrystallization
Spray coating
Stainless steel
Substrates
Tungsten carbide
Friction stir processing
Microstructure
Cold spray
Stainless steel
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Summary:In this work, the feasibility test of friction stir processing (FSP) of 1.5-mm-thick austenitic stainless steel cold spray coating deposited on 304L stainless steel substrate was performed using tungsten carbide tool. Applied FSP parameters (advance speed 50 mm/min, rotation speed 300 rpm, axial force 20 kN, tilt angle 1.5°) allowed to perform FSP treatment with a higher depth than the coating thickness. As a result, the material mixing at the coating-substrate interface was observed. The microstructure observation revealed that the coating microstructure in the stir zone was significantly modified. EBSD analysis confirmed that full material recrystallization during FSP allowed the formation of dense and uniform fine-grained structure with the mean grain size of 1.9 mm. Average coating microhardness was decreased from 406 to 299 HV. Further FSP parameter optimization should be carried out in order to improve the process reliability and avoid any coating failure during treatment.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-021-07295-w