^pKey;
Laboratory;
of;
Metastable;
Materials;
Science;
and;
Technology,;
College;
of;
Materials;
Science;
and;
Engineering,;
Yanshan;
University,;
Qinhuangdao;
066004,;
China;
^pof;
Materials;
Science;
and;
Engineering,;
Southwest;
Jiaotong;
University,;
Chengdu;
610031,;
China;
^pof;
Engineering,;
Liverpool;
John;
Moores;
University,;
Liverpool;
L3;
3AF,;
UK;
稀土氧化物; 堆焊金属; 细化机制; 显微组织; 中碳钢; 扫描电子显微镜; 断口观察; 异质晶核;