Effect of Heat Treatment Process on Microstructure and Properties of QAl10-3-1.5 Aluminum Bronze
With the development of manufacturing industry,it is an inevitable trend to further improve the wear and corrosion resistance of QAl10-3-1.5 aluminum bronze.The process of solid solution,aging and cryogenic treatment of QAl10-3-1.5 aluminum bronze were studied,and the optimum parameters were obtained as follows:solid solution at 890℃for 2 hours,aging treatment at 300℃for 4 hours,cryogenic treatment at-196℃for 0.5 hours.After solution aging treatment,the microstructure was mainly composed of β′ phase,with dispersed distribution of κ phases,and the tensile strength was up to 751 MPa.After cryogenic treatment,more dislocations formed in the microstructure,which increased the density of the material,and the hardness could reach 182 HBW.
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