Chip Topography for Ductile-Regime Machining of Germanium

[+] Author and Article Information
W. S. Blackley, R. O. Scattergood

Precision Engineering Center, North Carolina State University, Raleigh, NC 27695/7918

J. Eng. Ind 116(2), 263-266 (May 01, 1994) (4 pages) doi:10.1115/1.2901940 History: Received June 01, 1990; Revised June 01, 1993; Online April 08, 2008


Ductile-regime response during the diamond turning of brittle germanium crystals is evident from the damage-free surfaces obtained. The nature of the ductile-regime processes cannot be determined by examination of the final machined surface itself. Machining chips were characterized using scanning electron microscopy. The chip topography provides insight into the ductile-to-brittle transition that occurs along the tool nose. A detailed examinaiton of the chips provides an independent estimate of the critical cutting depth for the transition.

Copyright © 1994 by The American Society of Mechanical Engineers
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