Influence of thermal fatigue on the microstructure of a Ni-base superalloy. [Nimonic 263 (NI, 20%Co, 20%Cr, 6%Mo, 2%Ti, 0. 6%Al, 0. 06%C)]
- Banaras Hindu Univ., Varanasi (India)
Apart from superior creep strength and good oxidation resistance, thermal fatigue is one of the major concerns with superalloys as it is well established that a great number of failures occur because of thermal fatigue. The thermal fatigue life has been conventionally defined as the number of thermal cycles needed to form a major crack depth of 1 mm. The phenomenon of thermal fatigue has been extensively studied by earlier investigators and is found to be affected by the mechanical properties and microstructural characteristics as well as the test parameters. There has, however, been very little understanding of the microstructural changes brought about by thermal fatigue. The purpose of the present investigation, therefore, is to evaluate the changes in microstructure due to thermal fatigue in a Nimonic 263 alloy.
- OSTI ID:
- 6311384
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Vol. 29:4; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHROMIUM ALLOYS
MICROSTRUCTURE
THERMAL FATIGUE
COBALT ALLOYS
HEAT RESISTING ALLOYS
MOLYBDENUM ALLOYS
NICKEL BASE ALLOYS
TITANIUM ALLOYS
ALLOY SYSTEMS
ALUMINIUM ADDITIONS
CARBON ADDITIONS
CREEP
EXPERIMENTAL DATA
ALLOYS
ALUMINIUM ALLOYS
DATA
FATIGUE
HEAT RESISTANT MATERIALS
INFORMATION
MATERIALS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NUMERICAL DATA
360102* - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties