Machining of an aluminum/SiC composite using diamond inserts

Citation
Cje. Andrewes et al., Machining of an aluminum/SiC composite using diamond inserts, J MATER PR, 102(1-3), 2000, pp. 25-29
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
ISSN journal
0924-0136 → ACNP
Volume
102
Issue
1-3
Year of publication
2000
Pages
25 - 29
Database
ISI
SICI code
0924-0136(20000515)102:1-3<25:MOAACU>2.0.ZU;2-0
Abstract
Experimental results in the machining of a SiC-reinforced aluminum metal-ma trix composite (MMC) with diamond inserts are presented in this paper. MMCs are very difficult to machine and diamond tools are considered by far the best choice for the machining of these materials. Two types of commercially available diamond tools were examined: brazed polycrystalline diamond (PCD ) tools; and chemical vapor deposition (CVD) diamond coated tools. The pres ent results showed that the initial flank wear on both the PCD and the CVD diamond tools was generated by abrasion due to the very hard SiC particles present in the workpiece material. As machining progressed, thin films of t he workpiece material were found to be adhering to the worn areas. Further tool wear in these areas is believed to be caused by a combination of the a brasive wear and the adhesive wear mechanisms. This explains the faster rat e of flank wear on the CVD diamond insert than that on the PCD insert obser ved in the experiments. (C) 2000 Elsevier Science S.A. All rights reserved.