铸造Fe-Cr-V-C耐磨合金显微组织及硬度

Microstructure and hardness of cast Fe-Cr-V-C wear-resistant alloys

在实验室条件下对铸造Fe-Cr-V-C耐磨合金显微组织及硬度进行研究。结果表明,铬含量保持2%不变前提下,铸造Fe-Cr-V-C耐磨合金的钒含量从5%增至10%时,凝固组织中VC数量增加且尺寸增大,合金硬度变化不明显;钒含量保持10%不变前提下,随着铬含量由2%增至10%,铸造Fe-Cr-V-C耐磨合金的凝固组织中M7C3数量增加且合金硬度增大;淬火热处理会进一步提高Fe-Cr-V-C耐磨合金的硬度。

Microstructure and hardness of the cast Fe-Cr-V-C alloys were studied under laboratory conditions. The results show that when the chromium content（ 2%） keeping unchanged and vanadium content of the cast Fe-Cr-V-C alloy increases from 5% to 10%,the number of VC in solidification structure increases and the size of VC also increases. However,the hardness of the alloy has not significant changes. While vanadium content keeping 10% unchanged,and chromium content increasing from 2% to 10%,the number of M7C3 carbide in the solidification structure of cast Fe-Cr-V-C alloy and the hardness are both increased. Quenching heat treatment can further improve the hardness of Fe-Cr-V-C wear-resistant alloy.