CAJ | 학술논문

　　研究冷却速率的变化对Cr28高铬铸铁凝固组织及耐腐蚀性能的影响。结果表明，基体中固溶的Cr量和组织中碳化物相对体积含量对高铬铸铁的腐蚀速率有显著影响。快的冷却速率使高铬铸铁的组织更为均匀，偏析减小，同时也减小了奥氏体基体和碳化物之间的电极电位差，从整体上提高其耐腐蚀性能。
　　연구냉각속솔적변화대Cr28고락주철응고조직급내부식성능적영향。결과표명，기체중고용적Cr량화조직중탄화물상대체적함량대고락주철적부식속솔유현저영향。쾌적냉각속솔사고락주철적조직경위균균，편석감소，동시야감소료오씨체기체화탄화물지간적전겁전위차，종정체상제고기내부식성능。
The effect of cooling rate on the solidification microstructure and corrosion?resistance of high chromium white cast iron (Cr28)was investigated. The results indicate that the corrosion rate of high chromium cast iron largely depends on Cr concentrations in the matrix and the volume fraction of carbides. The rapid cooling rate leads to homogeneous microstructure and reduction in segregation,which decreases the potential difference between matrix and carbides,resulting in the improvment of the corrosion?resistance of high chromium cast iron.