A study on the particle erosion of upper bainitic austempered ductile iron

F. Y. Hung, L. H. Chen, T. S. Lui

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

A ductile iron of ~3.5 wt.% C and ~2.8 wt.% Si was austempered at 420 C for 0.5, 1, 2 and 3 h. These upper bainitic austempered ductile iron (ADI) specimens were then eroded by Al2O3 particles of ~275 μ grit size under the average particle velocity of 73 m s -1. According to the experimental results, 0.5 h austempered specimen, which contains largest amount of retained austenite and no austempered carbide, is more erosion resistant than the other ADI spicemens and the same cast iron of other common matrix structures. To increase the austempering time will induce brittle cracks at normal impact and shift the impact angle of maximum erosion rate to a higher one. The results also indicate the formation of ε-carbide upon particle impingement. Retained austenite is not the only phase to be transformed during the erosion process.

原文English
頁(從 - 到)985-991
頁數7
期刊Wear
252
發行號11-12
DOIs
出版狀態Published - 2002 6月

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 材料力學
  • 表面和介面
  • 表面、塗料和薄膜
  • 材料化學

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