Effect of pouring time on microstructure and mechanical properties of centrifugal cast Ti-46Al alloy tubesOA
The grain size of TiAl alloy castings prepared by traditional casting process is coarse,thus showing poor mechanical properties.In this study,a new type of high performance Ti-46Al alloy tube prepared by vacuum centrifugal casting technology was introduced.This research comprehensively examined the influence of pouring time on the microstructure and mechanical performance of the castings,employing both experimental approaches and ProCast simulation methodologies.The findings indicate that prolonging the pouring time facilitates a microstructural evolution from coarse columnar grains to refined equiaxed grains.Under the condition of pouring temperature of 1,600℃,rotation speed of 800 r·min^(-1) and pouring time of 6 s,the tensile strength of Ti-46Al alloy at room temperature reaches 650 MPa,and the tensile strength at 800℃ reaches 705 MPa,which is significantly higher than that of traditional as-cast Ti-Al alloy.
Gang Huang;Qian Dang;Cong-cong Su;Jing Zhao;Chi Zhang;Guo-huai Liu;Zhao-dong Wang
The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,ChinaThe State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,ChinaThe State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,ChinaSchool of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,ChinaSchool of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,ChinaThe State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,ChinaThe State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China
金属材料
vacuum induction meltingcentrifugal castingTi-46Al alloypouring timeTi-Al alloy tubes
《China Foundry》 2025 (1)
P.65-74,10
financially supported by the Natural Science Foundation of China(52071065)the Fundamental Research Funds for the Central Universities(N2007007)the National Key R&D Program of China(2016YFB-0301201)。
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