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Abstract

Inconel MA 6000 is an oxide dispersion and gamma strengthened nickel base alloy and a candidate material for demanding high-temperature applications in corrosive environments. Its fatigue behaviour, which is not well documented, is explored in a collaborative action within the ODS group of COST 501. Cyclic deformation curves, cyclic stress-strain curves and cyclic life data are reported as a function of the applied strain - rate for the temperature range 760 degrees C - 1050 degrees C. At 850 degrees C the high strain fatigue results are correlated with high cycle fatigue data and compared to the performance of IN738LC. Microstructural analysis, in combination with the fatigue data, shows a transition to homogeneous deformation at approximately 800 degrees C and a change from transgranular to mixed trans/intergranular failure at around 1000 degrees C, which is thought to be triggered by environmental attack. The initiation of cracks appears to take up a considerable fraction of the cyclic life.

Additional information

Authors: BRESSERS J JRC - PETTEN ESTAB. (THE NETHERLANDS) ARZT E MAX-PLANCK- INSTITUT FUER METALLFORSCHUNG, STUTTGART (GERMANY) , JRC - PETTEN ESTAB. (THE NETHERLANDS);MAX-PLANCK- INSTITUT FUER METALLFORSCHUNG, STUTTGART (GERMANY)
Bibliographic Reference: HIGH TEMPERATURE MATERIALS FOR GAS TURBINES AND OTHER APPLICATIONS 1986, LIEGE (BELGIUM), OCT. 6-9, 1986 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32765 ORA
Availability: Can be ordered online
Record Number: 1989125074200 / Last updated on: 1987-12-01
Category: PUBLICATION
Available languages: en
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