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Influence of process and geometry parameters on the surface layer state after roller burnishing of IN718

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Abstract

Highly stressed components of modern aircraft engines, like fan and compressor blades, have to satisfy stringent requirements regarding durability and reliability. The induction of compressive residual stresses and strain hardening in the surface layer of these components has proven as a very promising method to significantly increase their fatigue resistance. The required surface layer properties can be achieved by the roller burnishing process, which is characterised by high and deeply reaching compressive residual stresses, high strain hardening and excellent surface quality. In order to achieve a defined state of the surface layer, the determination of optimal process parameters for a given task still requires an elaborate experimental set-up and subsequent time-consuming and cost-extensive measurements. The development of well funded process knowledge about the correlation of the process parameters, the processed geometry and the surface layer state is the subject of this article.

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Acknowledgments

The authors gratefully acknowledge the financial support from the European 6th Framework Programme through the research project VERDI (Virtual Engineering for Robust Manufacturing with Design Integration; http://www.verdi-fp6.org).

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Authors and Affiliations

  1. Laboratory for Machine Tools and Production Engineering of RWTH Aachen University, Steinbachstr. 19, 52074, Aachen, Germany

    Fritz Klocke, Vladimir Bäcker, Hagen Wegner & Björn Feldhaus

  2. MTU Engines, Dachauerstr. 665, 80995, Munich, Germany

    Hans-Uwe Baron & Roland Hessert

Authors
  1. Fritz Klocke
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  2. Vladimir Bäcker
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  3. Hagen Wegner
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  4. Björn Feldhaus
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  5. Hans-Uwe Baron
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  6. Roland Hessert
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Correspondence to Vladimir Bäcker.

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Klocke, F., Bäcker, V., Wegner, H. et al. Influence of process and geometry parameters on the surface layer state after roller burnishing of IN718. Prod. Eng. Res. Devel. 3, 391 (2009). https://doi.org/10.1007/s11740-009-0182-0

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  • DOI: https://doi.org/10.1007/s11740-009-0182-0

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