Segregation behavior and embrittling effect of lanthanide La, Ce, Pr, and Nd at Σ3(111) tilt symmetric grain boundary in <i>α</i>-Fe<xref rid="cpb_28_12_126802fn1" ref-type="fn">*</xref><fn id="cpb_28_12_126802fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. U1867217), the National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No. 2019ZX06004009), and the China National Nuclear Corporation Centralized Research and Development Project (Grant No. FY18000120).</p></fn>

Segregation behavior and embrittling effect of lanthanide La, Ce, Pr, and Nd at Σ3(111) tilt symmetric grain boundary in α-Fe**

Project supported by the National Natural Science Foundation of China (Grant No. U1867217), the National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No. 2019ZX06004009), and the China National Nuclear Corporation Centralized Research and Development Project (Grant No. FY18000120).

Cao Jinli^{1, 2}, Yang Wen¹, He Xinfu^{1, †}

Atomic configurations of fission products (a) La, (b) Ce, (c) Pr, and (d) Nd favorably segregated to Σ3(111)[11¯0 ] tilt GB after relaxations, respectively. For La and Ce, the initial positions are site 1, while site 0 for Pr and Nd. We label the positions by the numbers near the GBs for La and Ce.