不同加硅量及K/Na、Mo复合变质对H13钢组织与性能的影响  

Effects of Different Si Addition and K/Na, Mo Multiple Modification on Structure and Property of H13 Steel

作　　者：侯晓霞[1] 杨华[1] 赵岩[1] 张均艳[1] 潘福贞[1] 任怀喜[1] 

机构地区：[1]山东大学材料液态结构及其遗传性教育部重点实验室,山东济南250061

出　　处：《铸造》2004年第9期713-716,共4页Foundry

摘　　要：在压铸模用钢H13中添加不同含量的Si,对试样分别进行高倍视频显微镜(HSVM)、差示扫描量热仪(DSC)分析及力学性能测试。结果表明,随着Si含量的增加,H13钢中铸态碳化物趋于断网,而奥氏体晶粒急剧长大,钢的强度和韧性下降。在添加Si的基础上进行K/Na、Mo复合变质处理,有效的消除了Si的副作用,优化了H13钢的组织及性能。当Si的加入量为0 5%左右,并进行K/Na、Mo复合变质处理时,H13钢的组织及性能提高,热疲劳性能较好。The experiment of HSVM, DSC and mechanics properties had been carried out to study the effect of different Si addition on the anti-thermal fatigue property of H13 steel. The results show that the net of casting carbide tends to be broken up, the γ grain grows up rapidly,and toughness and strength declines with the increase of Si addition. The K/Na, Mo multiple modification can eliminate the side effect of Si obviously. And the H13 steel has good mechanics property with the 0.5% Si addition and modification by K/Na, Mo.

关 键 词：硅 K/Na、Mo复合变质 H13钢 力学性能 

分 类 号：TG115[金属学及工艺—物理冶金]