Small-angle neutron scattering study on the stability of oxide nanoparticles in long-term thermally aged 9Cr-oxide dispersion strengthened steel  

作　　者：Peng-Lin Gao Jian Gong Qiang Tian Gung-Ai Sun Hai-Yang Yan Liang Chen Liang-Fei Bai Zhi-Meng Guo Xin Ju 高朋林;龚建;田强;孙光爱;闫海洋;陈良;白亮飞;郭志猛;巨新(Department of Physics,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Neutron Physics and Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics,Mianyang 621900,China;Institute of Power Metallurgy,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]Department of Physics,University of Science and Technology Beijing,Beijing 100083,China [2]Key Laboratory of Neutron Physics and Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics,Mianyang 621900,China [3]Institute of Power Metallurgy,University of Science and Technology Beijing,Beijing 100083,China

出　　处：《Chinese Physics B》2022年第5期484-489,共6页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2017YFB0702400)。

摘　　要：A 9 Cr-oxide dispersion strengthened(ODS)steel was thermally aged at 873 K for up to 5000 h.The size distribution and chemical composition of the dispersed oxide nanoparticles were analyzed by small-angle neutron scattering under a magnetic field.Combined with transmission electron microscopy,Vickers micro-hardness tests and electron backscattered diffraction measurements,all the results showed that the thermal treatment had little or no effect on the size distributions and volume fractions of the oxide nanoparticles in the ferromagnetic matrix,which suggested excellent thermal stability of the 9 Cr-ODS steel.

关 键 词：oxide dispersion strengthened(ODS)steel small angle neutron scattering(SANS) thermal aging NANOPARTICLE 

分 类 号：TL341[核科学技术—核技术及应用]