摘要
利用热分析、X射线衍射和着色金相法详细研究了Fe-5Cr－5Mo－5W－V－C系合金中V和C量对凝固过律中结晶相的种类和结晶温度的影响，得到了合金成分与凝固组织的关系，建立了（Fe－5Cr－5Mo－5W－2C）-V和（Fe－5Cr－5Mo－5W－3V）-C的准二元相图，以及（Fe－5Cr－5Mo－5W）-V－C合金的液相面投影图．结果表明，在Fe－5Cr－5Mo－5W－V－C合金中为获得大量分散的VC共晶组织，在低C时要较高的V量，在高C时所需V量对降低．
Using thermal analysis, X-ray diffraction and color etching, the effects of Vand C content in Fe-5Cr-5Mo-5W-V-C alloy on crystallized phases and temperatures were investigated. A relationship between composition and solidified microstructure was obtained. The phase diagrams of pseudo-binary (Fe-5Cr-5Mo-5W-2C)-V and (Fe-5Cr-5Mo- 5W-3V)-C alloy systems and a proiccted diagram of liguid phase boundaries of (Fe-5Cr-5Mo-5W)-V-C alloy system were drawn. The results show that in order to obtain a large amount of dispersed and isolated eutectic VC, a high content of V is required for a low carbon content, and a low content of V is required when the C content is high.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第8期838-843,共6页
Acta Metallurgica Sinica
关键词
高速钢
相图
凝固组织
钒
碳
high speed tool steel, phase diagram, solidification
