scholarly journals Coefficient of thermal expansion (CTE) study in metal matrix composite of CuSiC vs AlSiC

2019 ◽  
Vol 701 ◽  
pp. 012057 ◽  
Author(s):  
Mohd N Arif ◽  
Mohabattul Z Bukhari ◽  
Dermot Brabazon ◽  
M Saleem J Hashmi
Keyword(s):  
Thermal Expansion ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Coefficient Of Thermal Expansion

INVESTIGATION ON THERMAL PROPERTIES OF Al/SiCp METAL MATRIX COMPOSITE BASED ON FEM ANALYSIS

2008 ◽  
Vol 22 (31n32) ◽  
pp. 6167-6172 ◽  
Author(s):  
EUSUN YU ◽  
JEONG-YUN SUN ◽  
HEE-SUK CHUNG ◽  
KYU HWAN OH
Keyword(s):  
Thermal Expansion ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Coefficient Of Thermal Expansion ◽  
Experimental Situation ◽  
Face Centered Cubic ◽  
Sic Particles ◽  
Al Matrix

Computational simulations on the thermal analysis of metal matrix composite (MMC) composed of Al and SiC were performed in extended areas of SiC volume fraction. Due to the experimental limitations, only the narrow range of SiC volume fraction has been examined. Through the simulation, which enables current experimental situation to extend, we attempted to explore the dependencies of thermal and mechanical properties on changing the value of volume fraction ( V f ). To calculate the coefficient of thermal expansion (CTE), variables with temperature and V f were given in a range from 25°C to 100°C and 0 to 100%, respectively. We obtained quantitative results including CTE as a function of V f , which are in a good agreement with previous experimental reports. Furthermore, the stress analysis about thermally expanded MMC was performed. At low volume fraction of SiC , the thermal expansion caused the tensile stress at Al near the interface. However, as the volume fraction of SiC was increased, the stress turned to be compressive, it's because the linked SiC particles contracted the expansion of Al . The MMC of Al matrix face centered cubic site SiC particles has more stress evolutions than the MMC of Al matrix simple cubic site SiC particles at same volume fraction.

Friction Stir Welding of Aluminum Metal Matrix Composite Containers for Electric Components

2014 ◽  
Vol 611-612 ◽  
pp. 1445-1451 ◽  
Author(s):  
Jukka Pakkanen ◽  
Andreas Huetter ◽  
Cecilia Poletti ◽  
Norbert Enzinger ◽  
Christof Sommitsch ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Friction Stir Welding ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Base Material ◽  
Stir Zone ◽  
Friction Stir ◽  
Joint Geometry ◽  
Gas Tightness

For aerospace applications, light-weight boxes to protect and carry electronic equipment need to be sealed. The main requirements on the components are low thermal expansion and gas tightness. The common material for such an application is a metal matrix composite (MMC). The MMC suggested here consists of A356 aluminum alloy matrix with 15 vol.% SiC particle reinforcement. A safe limit for the electronic component inside the boxes during sealing is determined to be 180°C. Due to the boundary conditions gas tightness and low heat input, Friction Stir Welding (FSW) might be an alternative to the employed joining techniques. For the FSW process the T-Joint is the most appropriate joint geometry in respect to the box design. The geometry of the lid has to ensure the backing system for the stir zone inside the box. A successful welding of the box was done after a joint geometry optimization. The examination of the welded box concerns material characterization with microscopic methods, measuring thermal expansion in base material and stir zone and temperature measurement while FSW.

Thermal expansion studies of prestrained Al2O3/Al metal matrix composite

1996 ◽  
Vol 44 (5) ◽  
pp. 1873-1882 ◽  
Author(s):  
S. Elomari ◽  
R. Boukhili ◽  
D.J. Lloyd
Keyword(s):  
Thermal Expansion ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix

Dimensionally Stable Optical Metering Structures With NiTi Composites Fabricated Through Ultrasonic Additive Manufacturing

2013 ◽  
Author(s):  
Phillip Evans ◽  
Marcelo Dapino ◽  
Ryan Hahnlen ◽  
Joshua Pritchard
Keyword(s):  
Additive Manufacturing ◽  
Thermal Diffusivity ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
High Performance ◽  
Coefficient Of Thermal Expansion ◽  
Space Applications ◽  
Ultrasonic Additive Manufacturing ◽  
Specific Stiffness

High performance optical metering structures in airborne and space applications need to exhibit dimensional stability in demanding thermal and mechanical environments. Materials for this application should have a low coefficient of thermal expansion, high thermal diffusivity, high specific stiffness and exhibit good ductility. Current materials are limited in one or more of these properties. Common choices are invar, carbonfiber composite, and silicon-carbide. The former has low specific stiffness and thermal diffusivity and the latter choices are brittle materials that require special care and have slow manufacturing processes. In this work, the development of a thermally invariant metal matrix composite will be described along with its incorporation into a high performance optical metering structure. The material is a composite of super-elastic NiTi ribbons and aluminum, where the ribbons are embedded using ultrasonic additive manufacturing. Measurements and modeling of the thermo-elastic response will be presented followed by the design and manufacture of a metering structure. The metering structure design eases integration with an optical bench and lens bezels while leveraging the advantageous properties of this new metal matrix composite.

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