Experimental modeling and optimizing process parameters in the laser assisted machining of silicon carbide particle-reinforced aluminum matrix composites

2019 ◽  
Vol 6 (8) ◽  
pp. 086591 ◽  
Author(s):  
S M A Mirshamsi ◽  
M R Movahhedy ◽  
S Khodaygan
Keyword(s):  
Silicon Carbide ◽  
Process Parameters ◽  
Carbide Particle ◽  
Aluminum Matrix ◽  
Experimental Modeling ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Laser Assisted Machining ◽  
Silicon Carbide Particle

An analytical model for force prediction in micromilling silicon carbide particle–reinforced aluminum matrix composites

2020 ◽  
Vol 234 (10) ◽  
pp. 1273-1282
Author(s):  
Junwei Liu ◽  
Kai Cheng ◽  
Hui Ding ◽  
Shijin Chen
Keyword(s):  
Carbide Particle ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Particle Fracture ◽  
Milling Force ◽  
Fracture Force ◽  
Force Prediction ◽  
Silicon Carbide Particle ◽  
The Matrix

In micromilling the silicon carbide particle–reinforced aluminum matrix composites, cutting forces can provide a better insight of the cutting mechanism. In this article, an analytical model for force prediction in micromilling composites is developed considering the size effect of the matrix. In modeling, for the matrix, the cutting area is divided into shearing area and plowing area and the removal forces are established considering chip formation and edge forces; for the particle, the removal forces are established based on Griffith fracture theory. The model is verified by micromilling experiments. The influences of the process parameters (milling width, milling depth, and feed per tooth) on the milling force were studied. It shows that the maximum milling force increased with the increase in the feed per tooth and the milling depth and increases first and then stabilizes with the increase in milling width; the average milling force increases with the increase in the three parameters. In addition, the contribution of the particle fracture force is analyzed, and it is found that the contribution of the particle fracture force is affected by the feed per tooth, which basically accounts for about 23% of the maximum milling force and accounts for 23%–30% of the average milling force.

scholarly journals Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Alicia E. Ares ◽  
Carlos E. Schvezov
Keyword(s):  
Silicon Carbide ◽  
Aluminum Matrix ◽  
Temperature Gradients ◽  
Heat Extraction ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Directionally Solidified ◽  
Alloy Matrix ◽  
Local Conditions ◽  
Ceramic Particles

The present work is focused on the study of the effect of directional heat extraction on the silicon-carbide (SiC) distribution in zinc-aluminum matrix composites (MMCs) and on the columnar-to-equiaxed (CET) position in directionally solidified samples. To this end, a ZA-27 alloy matrix was reinforced with ceramic particles of SiC and vertically directionally solidified. The cooling rates, temperature gradients, and interphase velocities were then measured, and their influence on the solidification microstructure of the MMCs was analyzed. The recalescence detected and measured during the equiaxed transition was of the order of 3.5°C to 1.1°C. The values of the temperature gradients reached a minimum during the CET and were even negative in most cases (between −3.89 K and 0.06 K). The interphase velocities varied between 0.07 mm/s and 0.44 mm/s at the transition. Also, the presence of ceramic particles in ZA-27 alloys affected the thermodynamic local conditions and the kinetics of nucleation, producing a finer microstructure.

Sign in / Sign up

Export Citation Format

Share Document