Abstract
The Alumimum alloy AA7050-T7451 is largely used in high strength aircraft applications, Usually in T-7451 temper conditions it possesses optimized strength. Any enhancement in the strength beyond optimized value can achieve great weight saving and energy efficient. Often, relative motion in mutual contact also causes friction and wear. Thus, wear characteristics of such materials is also very important. In the present work the wear characteristic of surface composites made from AA7050-T7451 has been investigated. The wear test were performed on surface composites with best and lowest strength, coefficient of friction and wear surface morphology was analyzed and is discussed in light of microstructural and microhardness profiles. The wear performance, microstructural features and strengthening related and mutually discussed. The overall finding of this work may be of great use to professionals and researchers as the strength, microstructure and wear are all discussed in the single text. The results indicate that poor bonding between the reinforcement-matrix significantly reduces strength and wear behaviors. The effective dispersion of reinforcement results in net enhancement in strength and wear performance both when the processing done within a specific range of processing time-temperature.
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