Joint characterisation for repair brazing of superalloys

Liisa Heikinheimo, Anssi Laukkanen, Juha Veivo

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Abstract

The restricted weldability of superalloys that can operate at high temperatures and under mechanical loadings, 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, mechanical testing and service simulating testing, such as creep and thermal fatigue testing.
Original languageEnglish
Pages (from-to)5 - 12
Number of pages8
JournalWelding in the World
Volume49
Issue number5-6
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

Thermal fatigue
Fatigue testing
Metallography
Weldability
Brazing
Mechanical testing
Nondestructive examination
Superalloys
Restoration
Quality control
Gas turbines
Creep
Repair
Cracks
Testing
Temperature

Keywords

  • ProperTune

Cite this

Heikinheimo, Liisa ; Laukkanen, Anssi ; Veivo, Juha. / Joint characterisation for repair brazing of superalloys. In: Welding in the World. 2005 ; Vol. 49, No. 5-6. pp. 5 - 12.
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Joint characterisation for repair brazing of superalloys. / Heikinheimo, Liisa; Laukkanen, Anssi; Veivo, Juha.

In: Welding in the World, Vol. 49, No. 5-6, 2005, p. 5 - 12.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Laukkanen, Anssi

AU - Veivo, Juha

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AB - The restricted weldability of superalloys that can operate at high temperatures and under mechanical loadings, 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, mechanical testing and service simulating testing, such as creep and thermal fatigue testing.

KW - ProperTune

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JO - Welding in the World

JF - Welding in the World

SN - 0043-2288

IS - 5-6

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