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Effects of Multiple Rejuvenation Cycles on Mechanical Properties and Microstructure of IN-738 Superalloy

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Abstract

The scope of this work is to show the effects of multiple applications of a rejuvenation treatment studied for IN-738 on both the microstructure and the mechanical properties of the creep-damaged superalloy and to check the recovery obtained after one and two rejuvenation cycles through creep and tensile tests, whose results will be compared with the performance of the virgin material. This work will show that this rejuvenation treatment is able to recover the microstructure of creep-damaged specimens after one and two applications and that the mechanical properties of the rejuvenated alloy are very similar to the virgin material even after two rejuvenation cycles.

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Authors and Affiliations

  1. Department of Innovation and Information Engineering, Guglielmo Marconi University, via Plinio 44, 00193, Rome, Italy

    Cosimo Monti & Alessandro Giorgetti

  2. BHGE (TPS) – Nuovo Pignone Tecnologie SRL, Via F. Matteucci, 2, 50127, Florence, Italy

    Leonardo Tognarelli & Francesco Mastromatteo

Authors
  1. Cosimo Monti
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  2. Alessandro Giorgetti
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  3. Leonardo Tognarelli
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  4. Francesco Mastromatteo
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Correspondence to Cosimo Monti.

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Monti, C., Giorgetti, A., Tognarelli, L. et al. Effects of Multiple Rejuvenation Cycles on Mechanical Properties and Microstructure of IN-738 Superalloy. J. of Materi Eng and Perform 27, 2524–2533 (2018). https://doi.org/10.1007/s11665-018-3335-5

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  • DOI: https://doi.org/10.1007/s11665-018-3335-5

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