Paper Title:
Effects of Crystallographic Structure on Machining Performance with Polycrystalline Oxygen Free Copper by a Single Crystalline Diamond Micro-Tool
  Abstract

A study was carried out to investigate effects of crystallographic structure on the machining performance with polycrystalline oxygen free copper (OFC) using a single crystalline diamond (SCD) micro-tool. The SCD micro-tool used in this study fabricated with a focused ion beam (FIB) has a cutting length of around 30 µm on the primary clearance face. It was found that a change in crystallographic orientation resulted in a variation in machining force, chip thickness and shear angle, leading to a change in machined surface integrity. When a micro-size tool traverses within a grain at a machining direction aligned with a particular crystallographic orientation, the work material in front of the machining tool is found to be severely deformed. If the orientation changes to a less favorable orientation, this may lead to a much reduced shear angle, a thicker chip, striation at the chip back, higher machining forces and a degraded machined surface. This study contributes to the understanding of the physics of micro scale mechanical machining (micro-machining).

  Info
Periodical
Key Engineering Materials (Volumes 447-448)
Edited by
Jianhong Zhao, Masanori Kunieda, Guilin Yang and Xue-Ming Yuan
Pages
31-35
DOI
10.4028/www.scientific.net/KEM.447-448.31
Citation
X. Ding, L.C. Lee, D. L. Butler, K. C. Shaw, "Effects of Crystallographic Structure on Machining Performance with Polycrystalline Oxygen Free Copper by a Single Crystalline Diamond Micro-Tool", Key Engineering Materials, Vols. 447-448, pp. 31-35, 2010
Online since
September 2010
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Price
$32.00
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