SYMPOSIA PAPER Published: 01 January 1996
STP16477S

Microstructure and Mechanical Properties of WWER-440 Reactor Vessel Metal After Service Life Expiration and Recovery Anneal

Source

The microstructure of base and weld metals (st.15Kh2MFA) of Novovoronezh Nuclear Power Plant Units 1 and 4 reactor vessels was studied after service life expiration and recovery anneal by means of light metallography and transmission electron microscopy. The qualitative characteristics of flow structure were determined. The estimates were made for the contributions of different flows to the radiation hardening and its total value. The conclusion was made that the marked difference in the mechanical properties of irradiated weld and base metals can be caused either by different original structure conditions or by the difference of alloying and impurity elements content.

Author Information

Gorynin, IV
Central research institute of structural materials “Prometey”, St.Petersburg, Russia
Nesterova, EV
Central research institute of structural materials “Prometey”, St.Petersburg, Russia
Nikolaev, VA
Central research institute of structural materials “Prometey”, St.Petersburg, Russia
Rybin, VV
Central research institute of structural materials “Prometey”, St.Petersburg, Russia
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Details
Developed by Committee: E10
Pages: 248–259
DOI: 10.1520/STP16477S
ISBN-EB: 978-0-8031-5328-8
ISBN-13: 978-0-8031-2016-7