International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 07 | Jul 2025
p-ISSN: 2395-0072
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Study of dry sand abrasive wear behavior and Impact strength of LM26/SiC Particle Reinforced MMC’s Syed Saheeq Ahamed1, Bhaskar G2, Dr. C S Ravindra Sagar3 12Research Scholars, Department of Mechanical Engineering, SSIT, Tumakuru, Karnataka, India 2Assistent Professor, Department of Mechanical Engineering, SSIT, Tumakuru, Karnataka, India
Professor, Department of Mechanical Engineering, SSIT, Tumakuru, Karnataka, India ---------------------------------------------------------------------***--------------------------------------------------------------------Aluminium and its alloys are the next promising materials Abstract - In the present investigation a new Aluminium 3
for automobile and allied industries after steel. This is based on their properties like high strength to weight ratio, corrosion resistant, Easy to cast and many more. By reinforcing a suitable ceramic particles its overall performance can be improved and gets closer to that of steel.
alloy LM26 is selected as a matrix and reinforced with Silicon Carbide (SiC) particle from 0% to 10% at a regular interval of 2% is tested for dry sand abrasive wear to study the wear behavior under various conditions. The test is conducted under different loads 10N, 20N and 30N and different time frame of 15min, 30 min and 45 min. In this experiment the speed of rubber drum is kept constant at 200RPM, grain size of dry silica sand at 312 micron and sand flow rate at 200grams/min. The specimen and test were conducted as per ASTM G 65-81 standards. The specimen initial weight and final weights were recorded at regular intervals. The data were collected, tabulated and graphs were plotted to understand the behavior of materials.
Metal Matrix Composites (MMCs) reinforced with ceramic particles significantly enhance the mechanical and wear properties of materials, effectively limiting deformation under mechanical rubbing or sliding conditions [1,2,3,6]. These improvements are particularly beneficial for design engineers in the automotive and aerospace industries, where components are subjected to demanding operational stresses [4].
The automobile body parts are designed with an objective that whenever a collision occurs, it should absorb the impact energy and not to transmit the crack to next. Hence whenever a body parts are designed, the material selected which has a property of absorbing the impact strength and crack or break itself and not to damage the next parts so as to minimize the damage. Hence assessment of impact strength of novel materials is a must. In the present investigation LM26 Aluminium alloy reinforced with SiC particle at different percentage and tested for Izod and Charpy impact strength. The specimens were prepared as per ASTM D256 for Izod and ASTM E23 for Charpy standards. The tests are conducted on NABL accredited and calibrated labs. The obtained results are tabulated and graphs are plotted to observe the behavior.
LM26 Aluminium alloy reinforced with Silicon Carbide particles (SiC) has shown great improvement in Tensile strength, Ultimate yield strength, compressive strength and hardness[1]. The MMC’s have shown good improvement in Dry sliding Pin Disc experiment also. Hence the MMC is tested for three body dry sand abrasive test and impact test, both Izod and Charpy test to assess the material behavior. The composites are fabricated using a liquid metallurgical route combined with the stirring method to ensure uniform distribution of the reinforcement within the matrix[1]. After casting, the composites are machined to produce standard test specimens in accordance with ASTM specifications, with varying percentages of SiC reinforcement introduced to study their effect [13,14].
Further the SEM images of the fractured surfaces are also conducted at 500X to study the micro structure characterization to assess particle distribution, micro cracks and phase of solidification.
1.1 LM26 Aluminium alloy: LM26 Aluminium alloy is a designated grade of Aluminium alloy primarily used in casting applications, where "LM" refers to Linear Monolithic [3]. It belongs to the Al-Si (Aluminium-Silicon) family of alloys, renowned for their excellent castability, low shrinkage, and superior wear resistance[1]. LM26 is widely utilized in applications that demand moderate to high stress endurance, particularly where a high strength-to-weight ratio, good wear resistance, and corrosion resistance are critical factors [3,4,5,6,10,12].ASM standard composition for LM26 Aluminium alloy;[1]
Key Words: Dry sand abrasive test, LM26, SiC, ASTM G 6581, Impact Strength, ASTM D256 for Izod, ASTM E23 for Charpy, SEM 500X, Microstructure characterization.
1. INTRODUCTION Material wear is a common in automobile and construction parts as the come across a situation of being in contact with soil sliding. Hence designing a parts for these application, one has to consider wear resistant properties of a materials.
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