The dry sliding wear behavior of interpenetrating titanium trialuminide/aluminium composites

Owing to the brittle reinforced phase are introduced into ductile matrix phase, metal-intermetallic interpenetrating composites exhibit various types of wear mechanism such as adhesive, abrasive, and fatigue wear. In present work, the wear model has been proposed according to the mixing rule. Many factors such as special topology structure characteristic of reinforcement and elastic module were discussed in this model. The model based on the maximal and minimal hypothesis posts the mathematic relation among volume content of reinforcement, elastic module and wear rate. Increase in the volume fraction of reinforcement leads to improvement in the wear resistance. Unlike the Khruschov model and Zum-Gahr model, the proposed model was no longer follow linear rule. One kind of Al3Ti/Al composite with different volume content was fabricated and many wear test data were obtained to validate the correctness and universality of the model.