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Impact Toughness of an Isothermally Treated Zeron®100 SDSS

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Abstract

The aim of the present study is to investigate the impact toughness of a UNS 32760 SDSS, in relation to the quantity of secondary phases precipitated after isothermal aging in the range of 850-950 °C and for different exposure times. The impact toughness has been investigated by means of instrumented impact testing, using Charpy V-notched specimens at room temperature. The impact testing results show that, for an amount of about 0.5% volume fraction of intermetallic phase, the impact toughness is reduced by over 50%. For volume fractions higher than 1.5-2%, the impact toughness is definitively compromised, and small entities of plastic deformations are enough to cause a prevailing brittle fracture mechanism. By increasing the precipitates’ amounts, the fracture mechanism shows an ever more prominent brittle behavior until 6% volume fraction, exceeding which the ductile component is totally absent.

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Acknowledgments

The authors would like to thank Eng. G. Straffelini from the DIMTI of University of Trento, Mr. M. Baldan from Exova C.T.R. Srl, and all those from the DPCI of University of Padua, who have contributed to this study.

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Authors and Affiliations

  1. DPCI, University of Padua, Via Marzolo 9, 35131, Padua, Italy

    Irene Calliari, Marco Breda, Emilio Ramous & Katya Brunelli

  2. Exova CTR Srl, Via del Santo 211, 35010, Limena (PD), Italy

    Marco Pizzo

  3. DIMTI, University of Trento, Via Mesiano 77, 38123, Trento, Italy

    Cinzia Menapace

Authors
  1. Irene Calliari
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  2. Marco Breda
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  3. Emilio Ramous
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  4. Katya Brunelli
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  5. Marco Pizzo
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  6. Cinzia Menapace
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Correspondence to Marco Breda.

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Calliari, I., Breda, M., Ramous, E. et al. Impact Toughness of an Isothermally Treated Zeron®100 SDSS. J. of Materi Eng and Perform 21, 2117–2123 (2012). https://doi.org/10.1007/s11665-012-0138-y

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  • DOI: https://doi.org/10.1007/s11665-012-0138-y

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