Effect of Homogenizing Annealing on AS-Cast Aluminum Bronze

Microstructure and mechanical properties of a new high strength and wear-resistant as-cast aluminum bronze with different homogenizing annealing are investigated by means of SEM,XRD and X-ray spectrometer.The results show that the as-cast aluminum bronze can be eliminated casting segregation and improved mechanical properties.In homogenizing annealing,segregation atom can dissolve into matrix structure or form strengthening phase.Therefore,segregation microstructure is improved.If sphericity strengthening phase distributes equally on β matrix structure,the experiment alloy has good mechanical properties.Microstructure and mechanical properties of the experiment alloy primarily depend on homogenizing annealing temperature and time.According to contrast experiment,the best homogenizing annealing process is 950℃ and 9 hours.