The Evolution of Microstructure for Superalloy Inconel 625 by Electromagnetic Stirring
Due to its excellent creep rupture strength and prominent corrosion resistant properties under various circurmstances,superalloy Inconel 625 has been extensively used in aviation industry and chemical industry.The mechanical strength,which is a particularly important indicator for the superalloy,strongly depends on the matrix structure and crabide distribution.In current study,we have investigated the influence of linear travelling magnetic field(LMF)on the solidified microstructures of superalloy Inconel 625.The result has demonstrated that the solidification route is not affected but the size and amount of NbC and Laves+ γ eutectic structure are significantly influenced by the application of electromagnetic field due to the introduction of a forced convection which changes the diffusion process of element niobium.The application of LMF has increased the mount of NbC with larger size,as well as the fraction of eutectic structure.Furthermore,Compared to the normal cooling condition,the Nb and Mo elements were observed to be enriched in the interdendritic area with LMF,which is confirmed to be the main reason to enhance the growth of carbide and Laves phase in solidification process.
Superalloy electromagnetic stirring eutectic structure segregation
JIA Peng LU Hui LI Rui WANG En-gang REN Zhan-you HE Ji-cheng
Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education),Northeastern University,Shenyang 110014,China
国际会议
The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)
北京
英文
1-4
2012-10-22（万方平台首次上网日期，不代表论文的发表时间）