scholarly journals On calculation of the effective thermal conductivity of textured matrix composites with high volume fraction of inclusions

2018 ◽  
Vol 15 (3) ◽  
pp. 92-101
Author(s):  
I.V. Lavrov ◽  
◽  
V.V. Bardushkin ◽  
A.P. Sychev ◽  
V.B. Yakovlev ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Volume Fraction ◽  
High Volume ◽  
High Volume Fraction ◽  
Matrix Composites

Studies on Cutting Forces of High Volume Fraction SiCp/Al Composites with Ultrasonic Vibration High Speed Milling

2011 ◽  
Vol 295-297 ◽  
pp. 785-788 ◽  
Author(s):  
Dao Hui Xiang ◽  
Guang Xi Yue ◽  
Xin Tao Zhi ◽  
Hai Tao Liu ◽  
Bo Zhao
Keyword(s):  
Cutting Forces ◽  
High Speed ◽  
Volume Fraction ◽  
Cutting Speed ◽  
High Volume ◽  
High Volume Fraction ◽  
Matrix Composites ◽  
Machining Performance ◽  
High Speed Milling ◽  
Hard Cutting

The orthogonal method was used for analyzing the machining performance of high volume fraction SiCp/Al metal matrix composites (SiCp/Al MMCs) during high speed milling and ultrasonic high speed milling in this paper. The influence of cutting speed, feed rate and cutting depth on 3-directional forces were investigated. The results show that the cutting forces are decreased due to the cutting mechanism of SiCp/Al MMCs is changed from brittle cutting to ductile cutting during ultrasonic high speed milling. In addition, the chips exist in forms of C-type chips because of increasing rake angles. Ultrasonic high-speed milling is a more highly effective hard cutting way compared with high speed milling.

High Volume Fraction Aluminum /Alumina-Fused Silica Hybrid Particulate Metal Matrix Composite

2013 ◽  
Vol 701 ◽  
pp. 3-7
Author(s):  
Ghodratollah Roudini ◽  
Mehdi Asgharian ◽  
Morteza Khosravi
Keyword(s):  
Metal Matrix ◽  
Volume Fraction ◽  
High Volume ◽  
Optical Microscope ◽  
Fused Silica ◽  
High Volume Fraction ◽  
Matrix Composites ◽  
Sem Images ◽  
Composite Microstructure ◽  
Silica Hybrid

High volume fraction Aluminum/alumina-fused silica hybrid metal matrix composites containing alumina with 0, 10, 30 and 50 wt% fused silica were produced by melt squeezing casting method. Microstructure of hybrid composite was investigated by optical microscope and scanning electron microscopy (SEM). The SEM images showed uniform distribution of fused silica particles in composite microstructure. Also compressive strength of the composites changed (310-110 MPa) with amount of fused silica.

Fabrication by SPS and Thermophysical Properties of High Volume Fraction SiCp/Al Matrix Composites

2006 ◽  
Vol 313 ◽  
pp. 171-176 ◽  
Author(s):  
X.F. Gu ◽  
Lian Meng Zhang ◽  
Mei Jun Yang ◽  
Dong Ming Zhang
Keyword(s):  
Thermophysical Properties ◽  
Volume Fraction ◽  
Coefficient Of Thermal Expansion ◽  
High Volume ◽  
High Volume Fraction ◽  
Matrix Composites ◽  
Sic Particles ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Al Matrix Composites

SiCp/Al composites containing high volume fraction of SiC particles were fabricated by spark plasma sintering (SPS), and their thermophysical properties, such as thermal conductivity (TC) and coefficient of thermal expansion (CTE), were characterized. High relative density (R-D) of composites was successfully achieved through the optimization of sintering parameters, such as sintering temperature, sintering pressure and heating rate. The measured TCs of SiCp/Al composites fabricated by SPS are higher than 195W/m.k, no matter the volume fraction of SiC particles is high or low as long as the R-D is higher than 95%. The measured CTEs of SiCp/Al composites are in good agreement with the estimated values based on Kerner,s model. The high volume fraction of SiCp/Al composites are a good candidate material to substitute for conventional thermal management materials in advanced electronic packages due to its tailorable thermophysical properties.

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