Effect of Aging Treatment on the Cast Nickel-based Superalloy K52 under High Magnetic Field
In this study, the effect of two aging treatments on the superalloy K52 under high magnetic field was investigated. The results show that after the first aging with the 10T magnetic field the secondary γ′ precipitates have deviated from the spherical. After the second aging with and without the magnetic field, there are duplex γ′ precipitates presented in the γ matrix, which are the coarse secondary γ′ particles and the fine spherical tertiary γ′ particles, respectively. It was found that the magnetic field had a significant influence on the morphology of the secondary γ′ particles. The application of the magnetic field only resulted in the shape change of the coarse secondary γ′ particles from spherical to cuboidal. The shape change was mainly discussed based on the strain energy increase caused by the difference in magnetostriction between the γ matrix and γ′ precipitates. On the other hand, the magnetic field inhibited the spherical γ particles in nano-scale to precipitate from the γ′ precipitates. Besides, the magnetic field has also led to the decrease of the hardness of the alloy.
Superalloy High magnetic field Precipitate Magnetostrictive strain energy
Xiao Ren Guo-qing Chen Wen-long Zhou Chao Yuan Jun-shan Zhang
chool of Materials Science and Engineering,Dalian University of Technology,Dalian 116085,China nstitute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
国际会议
上海
英文
2008-10-13（万方平台首次上网日期，不代表论文的发表时间）