Microstructure Characterization of a Heterogeneous Weld for Welded Rotors

Vlastimil Vodárek; Anastasia Volodarskaja

doi:10.4028/www.scientific.net/KEM.741.128

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Mechanics of Herbert Pendulum Hardness Tester and its Application
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Microstructure Characterization of a Heterogeneous Weld for Welded Rotors
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 741Microstructure Characterization of a Heterogeneous...

Microstructure Characterization of a Heterogeneous Weld for Welded Rotors

Abstract:

The paper deals with microstructure characterization of a full-scale X14CrMoVNbN 10 1/ 27NiCrMoV 15-6 heterogeneous weld intended for IP/LP welded rotors. The welded rotors are being developed for modern turbines of coal fired power plants operating above 570 °C. The full–scale weld has been shown to be of good internal quality. Hardness surveys revealed the effects of post weld heat treatment parameters on weld metals and parent steels. Microstructure and precipitation of minor phases in parent materials, heat affected zones and weld metals in the state after the final stress relief annealing have been studied.

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Periodical:

Key Engineering Materials (Volume 741)

Pages:

128-133

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.741.128

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Online since:

June 2017

Authors:

Vlastimil Vodárek*, Anastasia Volodarskaja

Keywords:

Hardness, Heat Affected Zone, Heterogeneous Welds, Microstructure Stability, Minor Phases, PWHT

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References

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