Metal particulate production by modulation-assisted machining

Continuous production of Al 6061-T6 particulate using modulation-assisted machining (MAM) is demonstrated. Superimposition of a controlled, low-frequency modulation in conventional machining causes chips to form as discrete particles. By adjusting the conditions, equiaxed, platelet and fiber-shaped...

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Bibliographic Details
Published in:Scripta materialia 2007-11, Vol.57 (10), p.909-912
Main Authors: Mann, J.B., Saldana, C., Chandrasekar, S., Compton, W.D., Trumble, K.P.
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Aluminum base alloys
Chip formation
Hardness
Machining
Microstructure
Modulation
Particle size distribution
Powder processing
Severe plastic deformation (SPD)
Ultrafine grained microstructure
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Summary:Continuous production of Al 6061-T6 particulate using modulation-assisted machining (MAM) is demonstrated. Superimposition of a controlled, low-frequency modulation in conventional machining causes chips to form as discrete particles. By adjusting the conditions, equiaxed, platelet and fiber-shaped particles having narrow size distributions can be produced. Large-strain deformation leads to microstructure refinement and enhanced hardness. The process is applicable to a wide range of alloys and appears to be intrinsically scalable for large-volume production.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2007.07.025