Microstructure and Properties of a Repair Weld in a Nickel Based Superalloy Gas Turbine Component

• Autorzy: Rakoczy Ł. , Grudzień M. , Tuz L. , Pańcikiewicz K. , Zielińska-Lipiec A.

Identyfikatory

DOI

10.1515/adms‐2017‐0011

• Języki publikacji: EN

Abstrakty

EN

The aim of the present study was to characterize the repair weld of serviced (aged) solid-solution Ni-Cr-Fe-Mo alloy: Hastelloy X. The repair welding of a gas turbine part was carried out using Gas Tungsten Arc Welding (GTAW), the same process as for new parts. Light microscopy, scanning electron microscopy, transmission electron microscopy, microhardness measurements were the techniques used to determine the post repair condition of the alloy. Compared to the solution state, an increased amount of M6C carbide was detected, but M23C6 carbides, sigma and mu phases were not. The aged condition corresponds to higher hardness, but without brittle regions that could initiate cracking.

Słowa kluczowe

EN

long-term service; gas turbine; superalloys; TEM; Hastelloy X

PL

turbina gazowa; TEM; Hastelloy X

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2017
• Tom: Vol. 17, nr 2(52)
• Strony: 57--63
• Opis fizyczny: Bibliogr. 14 poz., rys., wykr., tab.

Twórcy

autor

Rakoczy Ł.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Cracow, Poland

autor

Grudzień M.

• Foundry Research Institute, Zakopiańska 73, 30-418 Cracow, Poland

autor

Tuz L.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Cracow, Poland

autor

Pańcikiewicz K.

autor

Zielińska-Lipiec A.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Cracow, Poland

Bibliografia

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• 4. Najafzadegan F., Mansori H., Shamanian M., Investigation of microstructure of the weld zone of Hastelloy X via pulsed Nd-Yag laser welds. Journal of Advanced Materials and Processing, 1, 4 (2013) 49-56.
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• 10. A5.14/A5.14M:2005 Specification For Nickel And Nickel-Alloy Bare Welding Electrodes And Rods.
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• 14. Rakoczy Ł., Zielińska-Lipiec A., Tuz L., Góral T., Liquation cracking induced by Nd-YAG laser beam in selected nickel based superalloys (in polish). Biuletyn Instytu Spawalnictwa 1 (2017) 32-48.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).