Abstract：Cracks and "pattern" defects on sawing surface of 2.25Cr-1Mo steel continuous casting round billet were studied and analyzed. It was found that these two defects belong to cleavage fracture. Based on the study of cleavage fracture mechanismand the actual situation，the measures to prevent cleavage fracture were put forward as follows：high temperature pitting of casting slab and decreasing cooling rate; stress relief annealing to realize atom rearrangement，promote dislocation action and eliminate dislocation aggregation.
张新文，李刚，轩康乐. 2.25Cr-1Mo钢连铸圆坯端面缺陷分析和预防[J]. 物理测试, 2019, 37(5): 43-46.
ZHANG Xin-wen，LI Gang，XUAN Kang-le. Analysis and prevention of defects on the end face of 2.25Cr-1Mo steel continuous casting round billet. PHYSICS EXAMINATION AND TESTING, 2019, 37(5): 43-46.
2019, Vol. 37 
