PCD inserts in end milling of Aluminum Silicon Carbide (AlSiC)
Metal matrix composites (MMC) falls under the category of potential engineering materials applicable to the automotive and aerospace industries. This is become their excellent properties, such as the capability to resist elevated temperature, improved strength, higher stiffness, low density, impr...
| Main Authors: | , , |
|---|---|
| Format: | Book Chapter |
| Language: | English |
| Published: |
IIUM Press
2011
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/23613/ http://irep.iium.edu.my/23613/ http://irep.iium.edu.my/23613/4/chp34.pdf |
| Summary: | Metal matrix composites (MMC) falls under the category of potential engineering materials
applicable to the automotive and aerospace industries. This is become their excellent properties,
such as the capability to resist elevated temperature, improved strength, higher stiffness, low
density, improved wears and creep resistance and higher elastic modulus. Among these materials
aluminum alloys reinforced with silicon carbide found most attentions [1]. AlSiC is preferred over
ceramics materials because of their higher combination of properties such as high strength, ductility
and high temperature resistance, compared to ceramics [2]. Li et al [3] found that aluminum alloys
reinforced with silicon carbide particles are almost three times more efficient than the un-reinforced
aluminum alloys in destroying tungsten projectiles at 1.2 km/sec. AlSiC has been considered for use
in automobile brake discs and various components in internal combustion engines. Aluminum
silicon carbide (AlSiC) is also being widely used in the electronic packaging industries. Though the
properties of this new engineering material are quite attractive, the machinability of AlSiC is very
poor. Poor machinability is associated with abrasive wear, which make it a class of difficult-tomachine
advanced materials [4]. The hardness in the range the silicon carbide phase is comparable
with that of tungsten carbide (WC), and is mainly responsible for the high abrasive wear of the tool.
Consequently the cutting edge of the tool which in course due to abrasion wear results in the
formation of poor surface finish during turning [5]. |
|---|