Improved creep-resistance of austenitic stainless steel for compact gas turbine recuperators

Maziasz, P.J.; Swindeman, R.W.; Montague, J. Preston; Fitzpatrick, Michael E.; Browning, P.F.; Grubb, John F.; Klug, R. C.

doi:10.1179/mht.1999.021

Cited by 11 publications

(1 citation statement)

References 7 publications

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“…The less critical components such as fuel nozzles, which are subjected to low or moderate temperatures, are made from the high-strength stainless steel SS 304. High-grade stainless steels are generally fabricated for turbine discs, wheels, and other non-critical components [29].…”

Section: Gas Turbine Superalloymentioning

confidence: 99%

Wear Characteristics of Superalloy and Hardface Coatings in Gas Turbine Applications–A Review

Pauzi

Ghazali

Zamri

et al. 2020

Metals

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In the gas-turbine research field, superalloys are some of the most widely used materials as they offer excellent strength, particularly at extreme temperatures. Vital components such as combustion liners, transition pieces, blades, and vanes, which are often severely affected by wear, have been identified. These critical components are exposed to very high temperatures (ranging from 570 to 1300 °C) in hot-gas-path systems and are generally subjected to heavy repair processes for maintenance works. Major degradation such as abrasive wear and fretting fatigue wear are predominant mechanisms in combustion liners and transition pieces during start–stop or peaking operation, resulting in high cost if inadequately protected. Another type of wear-like erosion is also prominent in turbine blades and vanes. Nimonic 263, Hastelloy X, and GTD 111 are examples of superalloys used in the gas-turbine industry. This review covers the development of hardface coatings used to protect the surfaces of components from wear and erosion. The application of hardface coatings helps reduce friction and wear, which can increase the lifespan of materials. Moreover, chromium carbide and Stellite 6 hardface coatings are widely used for hot-section components in gas turbines because they offer excellent resistance against wear and erosion. The effectiveness of these coatings to mitigate wear and increase the performance is further investigated. We also discuss in detail the current developments in combining these coating with other hard particles to improve wear resistance. The principles of this coating development can be extended to other high-temperature applications in the power-generation industry.

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Section: Gas Turbine Superalloymentioning

confidence: 99%