Dry Sliding Wear Properties of AZ31-Mg2Si Magnesium Matrix Composites

2016 ◽  
Vol 25 (10) ◽  
pp. 4109-4114 ◽  
Author(s):  
Wei Guo ◽  
De Wang ◽  
Yuan Fu ◽  
Li Zhang ◽  
Qudong Wang
Keyword(s):  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Wear Properties ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites

Addition of B4C to AZ91 via Diecasting and Its Effect on Wear Behaviour

2005 ◽  
Vol 488-489 ◽  
pp. 741-744 ◽  
Author(s):  
Ali Arslan Kaya ◽  
E.S. Kayali ◽  
Dan Eliezer ◽  
G. Gertsberg ◽  
N. Moscovitch
Keyword(s):  
Wear Resistance ◽  
Boron Carbide ◽  
Sliding Wear ◽  
Volume Fraction ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Magnesium Matrix ◽  
Magnesium Matrix Composites

The dry sliding wear behavior of magnesium-matrix-composites (MMC) reinforced by boron carbide particulates (B4Cp) has been investigated. Magnesium is the lightest structural material and is a good choice as a metal matrix for boron carbide and silicon carbide addition. Magnesium and its alloys, without reinforcement, are generally not suitable for mechanical applications due to their low wear resistance. The MMCs used in this study were produced via highpressure die-casting technique. The wear resistance of B4C/AZ91D composite reinforced with 12 and 25 wt% B4C were studied, compared with unreinforced diecast AZ91D. As-cast microstructures of the materials and boron carbide particules were characterized by using Scanning Electron Microscopy (SEM). The hardness values of the control sample and the composites were determined via Vickers hardness measurements. Pin on disk dry sliding wear tests were carried out to study wear rate and wear mechanisms. The magnesium matrix composites were used as pins while mild steel as disc material. The worn surfaces of pins were examined by using SEM. The wear performance of magnesium matrix composites was improved with increasing volume fraction of B4C up to a certain level.

Studies on Dry Sliding Wear Characteristics of Ceramic Al2O3 Particulate Reinforced 6061Al Matrix Composites

2014 ◽  
Vol 984-985 ◽  
pp. 319-325 ◽  
Author(s):  
V. Bharath ◽  
Madeva Nagaral ◽  
V. Auradi ◽  
S.A. Kori
Keyword(s):  
Sliding Wear ◽  
Testing Machine ◽  
Stir Casting ◽  
Wear Testing ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Wear Properties ◽  
Alloy Matrix ◽  
Particulate Reinforced

In the current investigation an attempt has been made and to produce ceramic Al2O3particulate reinforced 6061Al matrix composites by liquid metallurgy route (stir casting technique) and to study the dry sliding wear properties of the prepared composites. The amount of ceramic Al2O3particulate reinforcement addition was maintained at 9 and 12wt%. During the preparation of each composite the ceramic reinforcements were introduced in a novel way which involves three stage additions of reinforcements during melt stirring. The wear tests were conducted using pin on disc wear testing machine on 6061Al matrix before and after addition of Al2O3reinforcements Wear test results demonstrated the superior wear resistance of the composites over monolithic 6061Al alloy matrix. Key Words: MMC’s, Al2O3particulates, 6061Al, stir-casting

Influence of TiC on dry sliding wear and mechanical properties of in situ synthesized AA5052 metal matrix composites

2019 ◽  
Vol 53 (28-30) ◽  
pp. 4323-4336 ◽  
Author(s):  
Priyaranjan Samal ◽  
Pandu R Vundavilli ◽  
Arabinda Meher ◽  
Manas Mohan Mahapatra
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Sliding Wear ◽  
Base Alloy ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Brake Disc ◽  
Matrix Composites ◽  
Wear Properties

In this paper, aluminium metal matrix composites were synthesized through in situ process in which aluminium alloy 5052 (AA5052) and titanium carbide were used as matrix and reinforcement materials, respectively. The microstructural characterization and formation of stable TiC phases were analyzed with the help of field emission scanning electron microscope, X-ray diffraction analysis, respectively. The 9% TiC-reinforced MMCs had shown a considerable improvement, i.e. 32% increase in hardness, 78% in ultimate tensile strength and 116% increase in yield strength when compared with the base alloy. The tensile fracture of the specimens shows dimples, voids, cracks, and ridges indicating the brittle nature. Further, the dry sliding wear properties of the composites were studied with the help of a pin-on-disc wear testing machine. The composite with 9% TiC exhibited a decrease in volumetric wear loss by 24% when compared with the base alloy at a load of 30 N. With increase in the TiC content and applied load, the COF values decreased linearly for the composites. The 9% TiC-reinforced composites show an abrasive mode of wear mechanism as a result of formation of deep grooves with no plastic deformation. With the improvement obtained in the wear properties, this metal matrix composite can be considered as a replacement for the conventional brake disc material used in the automobile industry.

Dry sliding wear of garnet reinforced zinc/aluminium metal matrix composites

Wear ◽  
2001 ◽  
Vol 251 (1-12) ◽  
pp. 1408-1413 ◽  
Author(s):  
G. Ranganath ◽  
S.C. Sharma ◽  
M. Krishna
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Aluminium Metal
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