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pISSN : 1598-706X / eISSN : 2288-8381


한국주조공학회지 (24권6호 323-330)

Effects of the Microstructures on the Wear Characteristics of Cast irons

주철의 마모특성에 미치는 미세조직의 영향

Sug~Won Kim, Jin-Sung Park, Ki-Kon Kim, Hyung-Chul Lee

Chonbuk National University


This study aims to investigate on the effects of the microstructures on the wear characteristics of the different grey cast iron(GC) and spheroidal ductile cast iron(DCI). Wear test using wear tester of pin-on-disc type was carried out under the conditions of load 47.2N , velocity 0.2m/s, distance 4000m. At the GC, Wear rates depend on graphite type and oxide layer formed at wear surface. Weak rosette graphites are easily broken and formed wear debris over 30 μm. This wear debris occurs scuffing at wear surface. As a result of surface deformation, Narrow regions of the matrix between the graphite flakes and the contact surface lead to the failure of the necks. Wear rate for the DCI depended on hardness of matrix more than size of graphite.


Wear, GC, DCI, Graphite type, Oxide layer, Failed neck.