Effect of Phosphorus and Titanium on the tribological wear behavior of Hypereutectic Al Si Alloys

Abstract

Wear is one of the most commonly encountered industrial problems leading to the replacement of components in service. It is rarely catastrophic and results in reduced efficiency and increase in power newlineloss, oil consumption and rate of component replacement. In many cases, this cost and problems are minimized by appropriate design and/or selection of material. Therefore many efforts have been made to produce more durable engineering component and processing techniques to reduce the wear. These also include modification of bulk property of the materials, surface treatments and application of coating, etc., over the last few years, many efforts have been made to understand the (i) wear behavior of the contact surfaces during sliding newlinemotion and (ii) wear mechanism. Commercial pure aluminium (99.7%) and high purity aluminium (99.99%) castings are generally produced in small quantities, since newlinethey possess low strength, hardness, and poor machinability. Alloying elements such as silicon, magnesium, copper, titanium, boron and strontium are added to improve physical, mechanical and tribological newlineproperties. Si is an important addition to Al because of its excellent characteristics such as high strength to weight ratio, excellent castability, and pressure tightness, low co-efficient of thermal expansion, good thermal conductivity, good mechanical properties and corrosion resistance.