High strain rate induced initial chip formation of certain metals during micromachining processes

Authors: Jackson, M. J.; Robinson, G. M.

Source: Materials Science and Technology, Volume 21, Number 3, March 2005 , pp. 281-288(8)

Buy & download fulltext article:

Price: $48.00 plus tax (Refund Policy)

Abstract:

As microtechnology and nanotechnology become increasingly important to the needs of society, the need to create devices in engineering materials becomes more apparent. High speed milling has been shown to provide a great deal of promise in creating microstructures and in nanotexturing surfaces in engineering materials. Cutting tool rotation is expected to reach 1 000 000 revolutions per minute (rev min⁻¹) compared with conventional cutting speeds of around 30 000 rev min⁻¹. Rotating the tool this quickly reduces cutting forces, which produces a higher quality of cut so that post- processing is not required. Clearly, strain rates imparted to the workpiece at these speeds are very high and this influences initial chip formation and chip removal mechanisms. High strain rates imparted cause distinct chip formations in engineering materials to occur which are similarly observed in other materials, most notably biological materials such as cancellous bone. Certain soft metals such as aluminium do not machine very well because the material adheres to the cutting tool. However, high strain rates tend to overcome these limitations. This paper examines high strain rate initial chip formation in metals, compares these results to other materials, and shows that an initial chip curl model can be applied to describe high strain rate machining phenomena at the microscale.

Keywords: NANOTECHNOLOGY; ULTRA HIGH SPEED MACHINING; STRUCTURAL STEELS; MICROMACHINING; MICROELECTROMECHANICAL SYSTEMS MEMS; HIGH STRAIN RATE MACHINING

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174328405X18610

Publication date: 2005-03-01

More about this publication?

Authors wishing to cite fast track papers should give the journal name and the article DOI. This will enable reference linking via CrossRef and allow forward and backward citation tracking systems to associate the fast track citation with the final journal reference.

To see the complete content of Metal Science, the predecessor to Materials Science and Technology, going back to 1967, please click here.
Editorial Board
Information for Authors
Subscribe to this Title
Terms & Conditions
Online submission site
ingentaconnect is not responsible for the content or availability of external websites

High strain rate induced initial chip formation of certain metals during micromachining processes

Buy & download fulltext article:

Tools

Key

Text size:

Useful pages