摘要
介绍了Fe-C-Cr-V合金的凝固特点,以及钒对该合金系显微组织的影响。当钒含量小于5%时,钒使合金的共晶点稍向右移;当钒含量大于5%时,钒使共晶点左移。钒含量大于2%后,钒能抑制Cr/C小于5的Fe-C-Cr合金中M3C的形成,得到含M7C3型碳化物的Fe-C-Cr-V合金。由于Fγe结晶后不久发生(Fγe+MC)共晶反应,缩短了Fγe枝晶长大的温度范围,使Fγe枝晶细化。为得到MC体积量>M7C3体积量,指出了C、Cr、V三元素含量的适用范围,这对正确制定高钒Fe-C-Cr-V合金的化学成分有参考价值。
It was demonstrated that the solidification characteristic of Fe-C-Cr-V alloy and influence of v on microstructure of the alloy, when V〈5%, the eutectic composition is moved right, when V〉5%, the eutectic composition is moved left. when V 〉2%, it will inhibit formation of M3C,and promote the formation of M7C3. Not long after crystal of primary γFe, eutectic of （MC＋γFe） started freezing, the temperature region of primary γFe become narrower and fine γFe is obtained, in the alloy, To get MC amounts 〉 M7C3 amounts, the right content of C, Cr, V is recommended. Key words： Fe-C-Cr-V alloy; cooling curve; diagram for liquids surface
出处
《铸造》
EI
CAS
CSCD
北大核心
2006年第2期185-187,共3页
Foundry
