This article investigates the change laws in the chemical phase composition of M23C6 carbides and y'phase in specimens of C-HRA-3 heat-resistant alloy after aging at 700℃ and 750℃ .The results showed that it precipitated M23C6 carbides and y'phase of the C-HRA-3 alloy after high-temperature aging.The alloying elements M in the M23C6 carbides were Cr,Mo,Ni,and Co,while the alloying elements in the y'phase were Ni,Co,Al,Ti,Mo,Cr,and Nb.After aging for 8000 hours at 700℃,the precipitation of M23C6 carbides was about 0.978％,and the precipitation of y' phase was about 9.5％.After aging for 8000 hours at 750℃,the precipitation of M23C6 carbides was about 1.023％,and the precipitation of y' phase was about 6.753％.As the aging temperature increased,the precipitation of M23C6 carbides increased by about 4.6％,and the precipitation of y'phase reduced by approximately 28.9％.
关键词
C-HRA-3耐热合金/高温时效/化学相/M23C6碳化物/γ′相
Key words
C-HRA-3 heat-resistant alloy/high temperature aging/chemical phase/M23C6 carbide/γ'phase
维普
万方数据