Friction stir processing on carbon steel

Friction stir processing of medium carbon steel samples has been carried out using a milling machine and tools made of cemented tungsten carbide. Samples have been machined from 40 and 40X steels. The tools have been made in the shape of 5×5×1.5 mm and 3×3×1.5 mm tetrahedrons. The microstructure of...

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Bibliographic Details
Main Authors: Tarasov, Sergei Yu, Melnikov, Alexander G, Rubtsov, Valery E
Format: Conference Proceeding
Language:English
Subjects:
BAINITE
Carbide tools
Carbon steel
CARBON STEELS
Cemented carbides
CEMENTS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL STRUCTURE
FRICTION
Friction stir processing
Interlayers
LAYERS
Medium carbon steels
MICROSTRUCTURE
Milling (machining)
MILLING MACHINES
Needles
RECRYSTALLIZATION
SHAPE
Tetrahedra
Tool steels
Tungsten carbide
TUNGSTEN CARBIDES
WEAR
ZONES
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Summary:Friction stir processing of medium carbon steel samples has been carried out using a milling machine and tools made of cemented tungsten carbide. Samples have been machined from 40 and 40X steels. The tools have been made in the shape of 5×5×1.5 mm and 3×3×1.5 mm tetrahedrons. The microstructure of stirred zone has been obtained using the smaller tool and consists of fine recrystallized 2-3 μm grains, whereas the larger tool has produced the "onion-like" structures comprising hard quenched "white" 500-600 MPa layers with 300-350 MPa interlayers of bainite needles. The mean values of wear intensity obtained after measuring the wear scar width were 0.02 mm/m and 0.001 mm/m for non-processed and processed samples, respectively.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4899023