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This paper analyses the cycle-specific stress response of the single crystal, nickel-based alloy SRR99 in uncoated and aluminide coated conditions. The number of cycles required for initiating microcracks is measured by means of a computer vision system. Various modes of crack initiation and crack growth are observed and correlated with the TMF (thermo-mechanical fatigue) cycle type. The differences in TMF lives are discussed in terms of the materials and TMF parameters.

Additional information

Authors: BRESSERS J, JRC Petten (NL);TIMM J, JRC Petten (NL);WILLIAMS S, Rolls-Royce plc., Derby (GB);BENNETT A, Rolls-Royce plc., Derby (GB);AFFELDT E, Motoren und Turbinen Union München (DE)
Bibliographic Reference: Paper presented: Thermo-mechanical Fatigue Behaviour of Materials, Phoenix (US), November 14-15, 1994
Availability: Available from (1) as Paper EN 38766 ORA
Record Number: 199411624 / Last updated on: 1995-01-10
Original language: en
Available languages: en