| Issue |
MATEC Web of Conferences
Volume 12, 2014
FDMD II - JIP 2014 - Fatigue Design & Material Defects
|
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|---|---|---|
| Article Number | 04001 | |
| Number of page(s) | 3 | |
| Section | Poster Session 4A: Fatigue and Defects | |
| DOI | https://doi.org/10.1051/matecconf/20141204001 | |
| Published online | 09 June 2014 | |
Effect of graphite degradation on the LCF properties of nodular cast iron
ABB Turbo Systems, Development Department ZTE, 5401 Baden, Switzerland
The effect of degraded microstructure on the tensile and LCF properties was studied on a casing of a turbocharger, which exhibited locally irregular graphite formation. The tensile tests showed that the ductility values of the zone with degraded graphite decreased strongly compared to the zone with normal graphite, while the strength values decreased only slightly. Based on these results and a LCF reference curve for nodular cast iron with normal graphite structure, a synthetic LCF curve was generated for the material condition with degraded graphite structure. LCF tests on specimens with irregular graphite structure confirmed the predicted LCF behaviour quite good.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.