摘要
通过定向凝固-液淬试验,金相分析,扫描电镜等手段,研究了碳量变化对含钒10%的高钒高速钢初生相析出顺序的影响。结果表明:高钒高速钢(10%V)凝固时,初生相的析出顺序与碳含量有关。若碳含量低于1.64%,首先从液相中析出铁素体;碳含量位于1.64%和2.09%之间时,首先从液相中析出铁素体+VC;碳含量大于2.5%时,首先从液相中析出VC。随着凝固的进行,当合金成分达到二元共晶和包共晶成分时,分别发生相应的二元共晶和包共晶转变。
By means of unidirectional solidification and quenching test, metallographic analysis and SEM, the effect of carbon change on the appearing order of the first phase of high vanadium high-speed steel containing vanadium 10% was studied. The results show that, When the high vanadium high-speed steel （10% V） solidified, the order of appearing of the first phase relates to the content of carbon. If the content of carbon is under 1.64%, ferrite appears from liquid first. When the content of carbon is 2.09%, ferrite, austenite and VC appear together from liquid first. When carbon content is 2.50%, austenite and VC appear together from liquid first. When carbon content is 2.97%, VC appears from liquid first. When the composition are duality or ternary eutectic, the corresponding transformation can happen.
出处
《铸造技术》
EI
CAS
北大核心
2005年第11期1015-1019,共5页
Foundry Technology
基金
河南省重大科技攻关项目项目编号0322020300
关键词
高钒高速钢
定向凝固
初生相
二元共晶
包共晶
High vanadium high speed steel
Unidirectional solidification
First phase
Duality eutectic
Ternaryeutectic
