Microstructure Analysis of Fe-base ODS Steel
Precipitate features,such as the size,morphology,and distribution,have are important effect on determining the mechanical properties of precipitate-hardened alloys at elevated temperatures.In this study,The microstructural formation and evolution of Fe-base ODS steel were investigated using transmission-electron microscopy(TEM)and scanning-electron microscopy(SEM).The steel was designed with the composition of Fe-21.5Ni-12.5Al-10Cr-3.4Mo-1Ti-0.3Y2O3(wt.%).These alloys solution-treated at 1100℃ for 30 min,followed by water quenching and aging at 550℃ for 2h.NiAl precipitates′ morphology are cuboids,maintain a coherent or semi-coherent structure with the matrix.there are a lot of fine dispersed oxide precipitates in the matrix,whose particles size is nearly 10-20 nm.
ODS steel NiAl intermetallics Mechanical alloying Transmission electron microscopy (TEM)
Wang Shengxi Zhang Lin Shan Huajie Song Lijun Qu Xuanhui
Institute of Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China
国际会议
北京
英文
1928-1930
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）