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Material-related aspects of the machinability of Austempered Ductile Iron

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Abstract

The exceptional properties of Austempered Ductile Iron (ADI) are widely known and can be ascribed to its austenitic-ferritic microstructure. Strain hardening of this material is exceptional and an advantage for many applications where high wear resistance is required, as well as the extraordinary combination of ductility and tensile strength. One reason which restricts the introduction of this material in practical applications is its poor machinability. This paper describes the material-sided influences on machinability, especially on the acting wear mechanism. The heat treatment factor austempering time, ADI grade and the alloying elements nickel and molybdenum are varied and investigated in external longitudinal turning operations.

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Acknowledgments

The authors would like to thank the Bundesministerium für Wirtschaft und Technologie for funding the project 15308 N “Machinability of ADI” in the program of “Industrielle Gemeinschaftsforschung” (IGF).

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Correspondence to M. Arft.

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Klocke, F., Arft, M. & Lung, D. Material-related aspects of the machinability of Austempered Ductile Iron. Prod. Eng. Res. Devel. 4, 433–441 (2010). https://doi.org/10.1007/s11740-010-0227-4

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  • DOI: https://doi.org/10.1007/s11740-010-0227-4

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