Development of Al 6063–TiB2 in situ composites

✍ Scribed by C.S. Ramesh; Abrar Ahamed; B.H. Channabasappa; R. Keshavamurthy

• Publisher: Elsevier Science
• Year: 2010
• Weight: 901 KB
• Volume: 31
• Category: Article
• ISSN: 0261-3069
• DOI: 10.1016/j.matdes.2009.10.019

✦ Synopsis

In situ TiB 2 reinforced Al 6063 composites have been successfully synthesized through the chemical reaction between Al-10%Ti and Al-3%B master alloys in the Al 6063 alloy using liquid metallurgy route. The amount of TiB 2 formed in the composite is estimated using gravimetric analysis. Mechanical properties in terms of microhardness, ultimate tensile strength and modulus of elasticity have been improved by 21%, 47% and 65% respectively in comparison with matrix alloy. Further, ductility in terms of percentage elongation of the composites was found to increase by about 368% when compared with the matrix alloy. The improvement in ductility may be associated with the grain refinement of the composite with an increase in the content of Al-3%B master alloy.