Fe-20Cr-1Si-1C계 경면처리 합금의 cavitation erosion 저항성에 미치는 Mn 첨가의 영향

• Published in: Biuletyn Uniejowski Vol. 33; no. 1; pp. 10 - 16
• Main Authors: 김수철(S. C. Kim), 박인호(I. H. Park), 장세기(S. K. Jang), 김선진(S. J. Kim), 강성군(S. G. Kang)
• Format: Journal Article
• Language: Korean
• Published: 한국표면공학회 2000
• ISSN: 1225-8024; 2299-8403

Characteristics of cavitation erosion resistance of Fe-20Cr-1Si-1C-xMn(x=0, 5, 15) alloys were investigated by SEM and XRD analysis. The effects on strain-induced transformations were considerably reduced with increasing the amounts of Mn due to twining that occurred at 5, 15Mn alloys, activating cavitation erosion rates(mg/$\textrm{cm}^2$) which varied as 0.055, 0.114 and 0.160mg/$\textrm{cm}^2$ for 0, 5, 15Mn. From the results, it was found that the addition of Mn element in Fe-base alloy provides more cracking sites at twins rather than absorbing strain energies, so accelerates cavitation erosion rates.