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, †}

Change in the excess volume per unit area of the Fe GB caused by Ln impurity placed in the most stable sites and calculated embrittlement energies of Ln atoms at their most stable sites.