研究了合金化和球化工艺对超高碳钢组织和性能的影响.用扫描电子显微镜、透射电子显微镜和能谱仪观察了钢的组织形貌和元素分布.结果表明:在碳和铬含量相同的超高碳钢中加入同量的合金元素铝和硅时,铝可明显抑制锻造组织中网状或粗大的颗粒状碳化物的析出、细化珠光体组织和控制石墨形成.UHCS-2.13Si和UHCS-2.61Al钢经850℃X3 h球化退火处理后,都能得到较好的球化组织,其力学性能分别为:UHCS-2.13Si钢,Rm=1 033 MPa,Re=734 MPa,A=14.9%;UHCS-2.61Al钢,Rm=973 MPa,Re=677 MPa,A=18.2%.
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