Paper Titles
Preface
Microstructural Processes in Thermal Creep of Zirconium Nuclear Fuel Cladding Tubes
p.3
Analysis of Cavitation Damage of HR3C Steel Tube Joints after Internal Pressure Creep Tests
p.9
Hydrogen Embrittlement of X52 Electrolytically Charged Pipeline Steel
p.15
Metallographic Analysis of a Failed Cast Upper Ram of a Die-Forging Hammer
p.23
Crack Analysis in Welds of Boiler Tubes Made of T24 Steel
p.31
Comparing the Mechanical Properties of Secure Ballistic Steels after Heat Treatment by the Q-P Process
p.39
Comparative Study of Direct Energy Deposition (DED) and Traditional Casting Techniques for 316l Stainless Steel
p.47
3D Printing Materials Testing for Gears
p.59

Analysis of Cavitation Damage of HR3C Steel Tube Joints after Internal Pressure Creep Tests

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Abstract:

The creep behaviour of new grades of austenitic creep resistant steels used mainly for USC boiler superheaters reflects the development and degradation of microstructure with respect to changes that occur during long-term creep exposure. This mainly involves the formation of a brittle intermetallic σ-phase, which significantly affects mechanical properties, creep rupture strength and creep plasticity. The paper describes the creep cavitation damage of heterogeneous TIG weld joints of tubes made of HR3C steel and Inconel 617 alloy welded with Inconel 617 alloy-based welding wire, that were tested by internal pressure creep test. The final damage always occurred in HR3C steel beyond the heat-affected zone of the weld joint. Creep cracks propagated along grain boundaries decorated with M23C6 carbides and also sigma phase. The extent and range of creep cavitation damage was evaluated according to the NORDTEST TR 302 procedure (hereafter referred to as NT TR 302).

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Periodical:

Materials Science Forum (Volume 1166)

Pages:

9-14

DOI:

https://doi.org/10.4028/p-CdsJj1

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Online since:

November 2025

Authors:

Zdeněk Kuboň*, Jana Kosňovská, Gabriela Rožnovská

Keywords:

Cavitation Damage, HR3C Steel, Inconel 617, Internal Pressure Creep Test, NORDTES TR 302, Welded Joint

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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