Friction stir processed of 6061-t6 aluminum alloy reinforced with silica from rice husk ash

• Published in: Advanced Materials Research
• Main Author: Zuhailawati H.; Halmy M.N.; Almanar I.P.; Dhindaw B.K.
• Format: Conference paper
• Language: English
• Published: Trans Tech Publications Ltd 2014
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906981191&doi=10.4028%2fwww.scientific.net%2fAMR.1024.227&partnerID=40&md5=603469dd49fc445ccc4792f97aa74239

This paper presents a development of a composite using friction stir process of AA606-T6 aluminum alloy reinforced with amorphous silica obtained from rice husk ash. The amorphous silica was produced after acid leaching and calcinations at 500°C. The silica powder was placed into a groove that was made in the joining line of AA606-T6 plates prior to friction stir process. Hard silica particles restricted the grain growth of aluminum matrix that contributed to a slight increase in hardness. Hardness decreases in zones under the tool was observed because AA6061-T6 alloy was sensitive to friction heat generated by the tool. Ageing at 200°C increased the hardness of the aluminum in the friction stir process zones. © (2014) Trans Tech Publications, Switzerland.