Repair brazing of gas turbine hot parts: Methods and joint characterisation

Liisa Heikinheimo

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

6 Citations (Scopus)

Abstract

This paper describes the use of repair brazing for gas turbine hot parts, especially vanes and blades. The limited weldability of superalloys that can operate at high temperatures and under high mechanical loading, required in modern gas turbines, has lead to the development of repair brazing techniques for various crack types and for restoration of dimensional changes. Methods to characterise these joints are necessary for the development work, the quality control of the procedures and acceptance of refurbished parts. These methods are mainly various NDT techniques, metallography and service simulating mechanical testing, such as creep and thermal fatigue testing of joints.
Original languageEnglish
Title of host publicationBALTICA V
Subtitle of host publicationCondition and Life Management for Power Plants
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages149-162
Volume1
ISBN (Electronic)951-38-5715-8
ISBN (Print)951-38-5714-X
Publication statusPublished - 2001
MoE publication typeA4 Article in a conference publication
EventBALTICA V - Condition and Life Management for Power Plants - Porvoo, Finland
Duration: 6 Jun 20018 Jun 2001

Publication series

SeriesVTT Symposium
Number211
ISSN0357-9387

Conference

ConferenceBALTICA V - Condition and Life Management for Power Plants
Abbreviated titleBaltica V
CountryFinland
CityPorvoo
Period6/06/018/06/01

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Cite this

Heikinheimo, L. (2001). Repair brazing of gas turbine hot parts: Methods and joint characterisation. In BALTICA V: Condition and Life Management for Power Plants (Vol. 1, pp. 149-162). VTT Technical Research Centre of Finland. VTT Symposium, No. 211