Effect of Red Mud Reinforcement on the Corrosion Resistance of Aluminium 6061 Metal Matrix Composites in Sea Water | Chapter 6 | Chemical and Materials Sciences: Research Findings Vol. 4

 

Corrosion can affect the metal matrix composite in a variety of ways, which depend on its nature and the environmental conditions prevailing. The red mud content in aluminium 6061 alloy plays a significant role in the corrosion resistance of the material. A lot of research has been done on corrosion characteristics of particulate reinforced metal matrix composites, but no concrete investigation has been made on red mud particulate reinforced with aluminium alloy 6061 metal matrix composites. The present investigation aims to evaluate the corrosion properties of red mud particulate reinforced aluminium 6061 metal matrix composites. Red mud particulates reinforced varying from two to six per cent by weight in steps of two per cent under dry conditions. Composites are prepared by liquid melt metallurgy techniques using the vortex method. Castings are cut, turned and shaped into the required size to prepare the specimens for evaluation of the corrosion properties. Corrosion tests were conducted at room temperature (230 °C) using the conventional weight loss method according to ASTM G69-80. The corrodent used for the tests was Arabian Sea water collected from Malpe beach, Udupi District, Karnataka. Weighed specimens dipped in seawater. Specimens were taken out at every 24 hours intervals up to 96 hours. Four specimens for each condition and time were immersed in the corrosive solutions. In all 16 specimens of matrix and composites were immersed in the corrodent. Corrosion rates were calculated using the formula 534DAT/W. In each case, the corrosion rate in seawater decreases with an increase in exposure time for matrix and metal matrix composites due to passivation induced by aluminium. Therefore, incorporating red mud particulates in Aluminium alloy 6061 enhances corrosion resistance, making it a more effective material for marine and other corrosive environments.

 

Author(s) Details

 

P.V. Krupakara
Department of Chemistry, Adrsha Institute of Technology, Bangalore, India.

 

H.R. Ravikumar
Department of Chemistry, M.S. Engineering College, Bangalore, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/cmsrf/v4/4694

 

Effect of Red Mud Reinforcement on the Corrosion Resistance of Aluminium 6061 Metal Matrix Composites in Sea Water | Chapter 6 | Chemical and Materials Sciences: Research Findings Vol. 4

 

Corrosion can affect the metal matrix composite in a variety of ways, which depend on its nature and the environmental conditions prevailing. The red mud content in aluminium 6061 alloy plays a significant role in the corrosion resistance of the material. A lot of research has been done on corrosion characteristics of particulate reinforced metal matrix composites, but no concrete investigation has been made on red mud particulate reinforced with aluminium alloy 6061 metal matrix composites. The present investigation aims to evaluate the corrosion properties of red mud particulate reinforced aluminium 6061 metal matrix composites. Red mud particulates reinforced varying from two to six per cent by weight in steps of two per cent under dry conditions. Composites are prepared by liquid melt metallurgy techniques using the vortex method. Castings are cut, turned and shaped into the required size to prepare the specimens for evaluation of the corrosion properties. Corrosion tests were conducted at room temperature (230 °C) using the conventional weight loss method according to ASTM G69-80. The corrodent used for the tests was Arabian Sea water collected from Malpe beach, Udupi District, Karnataka. Weighed specimens dipped in seawater. Specimens were taken out at every 24 hours intervals up to 96 hours. Four specimens for each condition and time were immersed in the corrosive solutions. In all 16 specimens of matrix and composites were immersed in the corrodent. Corrosion rates were calculated using the formula 534DAT/W. In each case, the corrosion rate in seawater decreases with an increase in exposure time for matrix and metal matrix composites due to passivation induced by aluminium. Therefore, incorporating red mud particulates in Aluminium alloy 6061 enhances corrosion resistance, making it a more effective material for marine and other corrosive environments.

 

Author(s) Details

 

P.V. Krupakara
Department of Chemistry, Adrsha Institute of Technology, Bangalore, India.

 

H.R. Ravikumar
Department of Chemistry, M.S. Engineering College, Bangalore, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/cmsrf/v4/4694

Optimization of Wear Behavior in Al-6061-B4C Composites Using Taguchi Technique and Response Surface Analysis | Chapter 2 | Current Innovations in Chemical and Materials Sciences Vol. 9

 

Metal Matrix Composites (MMCs) have been widely investigated and used in automobile and aerospace industries due to their advantages of improved strength, stiffness and increased wear resistance over monolithic alloys. Also considering limited reports on the study of weight % influence on wear characteristics of Al-6061-Boron Carbide (B4Cp) composites. This study presents the effect of weight % of B4Cp in Al-6061 alloy matrix on wear loss during dry sliding wear in pin-on-disc tribometer at different wear parameters against oil-hardened non-shrinking (OHNS) steel disk at room temperature. The composites are prepared by the stir casting technique. Taguchi is a statistical tool for acquiring data in a controlled way and is used to analyze the influence of process variables through the design of experimentation. Tribological investigations were examined according to the L9 orthogonal array of Taguchi. The influence of % of reinforcement along with load, speed and distance were examined for the wear loss of composites. The results, analysed using Taguchi and Response Surface Method to understand the significance of considered parameters (percentage of reinforcement, speed, time and load) on wear loss, revealed increased wear resistance of composite with increasing B4C particles. The observed results have been explained based on the microstructural behaviour and response surface of wear-tested composites. The study concludes that it is possible to prepare Al 6061-B4C composites using the stir casting technique, which exhibits improved hardness, wear resistance, and tensile strength with increasing reinforcement content.

Author(s) Details:

Dr. B. Manjunatha,
Department of Mechanical Engineering, Acharya Institute of Technology, Soldevanahalli, Hesaraghatta Main Road, Bangalore-560090, India.

 

Dr. H. B. Niranjan
Department of Mechanical Engineering, Sambhram Institute of Technology, Lakshmipura Cross, MS Palya, Jalahalli East, Bangalore-560097, India.

 

Dr. S. Raghavendra
Department of Mechanical Engineering, Sai Vidya Institute of Technology, Bangalore-560 064, India.

Please see the link here: https://stm.bookpi.org/CICMS-V9/article/view/14333