What is it about?

The heat resistant tempered martensite ferritic steel X20CrMoV121 (DIN) has been extensively used within the last few decades as a material for boiler tubing systems and pipelines in thermal power plants (TPP). In this paper, characterization and mechanical properties of undermatch welded joint made during partial replacement of boiler outlet superheater in TPP by austenitic filler material, after 10 years of service are presented.

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Why is it important?

Repair welding of the martensitic steels with an austenitic filler materials can be used only as a temporarily solution in order to avoid a time consuming full welding cycle. Usually, these types of repaired welds are recommended only for short-term service and thus are specifically designed for replacement during thermal power plants overhauls.

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This page is a summary of: Characterization of Tube Repair Weld in Thermal Power Plant Made of a 12%Cr Tempered Martensite Ferritic Steel, September 2016, Springer Science + Business Media,
DOI: 10.1007/978-3-319-32634-4_8.
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