RE对铸造H13钢凝固组织及冲击韧性的影响  

INFLUENCE OF RE ON SOLIDIFICATION STRUCTURE AND IMPACT TOUGHNESS OF CAST H13 STEEL

作　　者：兰杰[1] 贺俊杰[1] 丁文江[1] 王渠东[1] 朱燕萍[1] 翟春泉 徐小平 卢晨 

机构地区：[1]上海交通大学 [2]上海爱尔思模具制造有限公司

出　　处：《钢铁》2000年第10期48-50,66,共4页Iron and Steel

摘　　要：研究了 RE变质剂对铸态 H1 3钢凝固组织和冲击韧性的影响。结果表明 ,变质处理使铸态 H1 3钢的合金元素偏析现象明显减弱 ,白亮带 (碳及合金元素高浓度区 )由网状分布转变为少量孤岛状分布。与未变质H1 3钢相比 ,经过淬火、回火处理后的变质 H1 3钢中无晶界碳化物析出 ,冲击韧性大幅度提高。Influence of RE on solidification structure and impact toughness of cast H13 steel has been investigated. The results indicate, the segregation of alloy elements is weakened and the pattern of segregation has converted from net form into isolately distributed islands through inoculation. Compared with non inoculated cast H13 steel,inoculated cast H13 steel after quenching and tempering has no carbide in grain boundaries and its impact toughness is improved greatly.

关 键 词：铸造H13钢 变质处理 冲击韧性 稀土 凝固组织 

分 类 号：TG21[金属学及工艺—铸造]