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A study on the effects of artifacts on fatigue limit of ductile Cast Iron with ferritic structure

  • Materials & Fracture · Solids & Structures · Dynamics & Control · Production & Design
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Abstract

In this study, fatigue tests were performed to examine the effects of micro drill hole on fatigue limit of as cast and austempered ductile cast iron (ADI) using the rotary bending fatigue tester. As results, micro drill holes (diameter≤0.4mm) did not influence the fatigue limit of ADI, compared to annealed ductile cast iron; the critical defect size of crack initiation, in ADI was larger than as cast. If the\(\sqrt {area} s\) of micro drill hole and graphite nodule in ADI are comparable, crack initiates at the graphite nodule. When the ruggedness developes through austempering treatment process, microstructure on crack initiation at micro drill hole is tougher than that of as cast ductile cast iron.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Yeungnam University, Korea

    Jinhak Kim

  2. Department of and Mechanical Engineering, Kangwon National University, Korea

    Mingun Kim

Authors
  1. Jinhak Kim
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  2. Mingun Kim
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Correspondence to Jinhak Kim.

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Kim, J., Kim, M. A study on the effects of artifacts on fatigue limit of ductile Cast Iron with ferritic structure. KSME International Journal 14, 1021–1027 (2000). https://doi.org/10.1007/BF03185056

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  • DOI: https://doi.org/10.1007/BF03185056

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