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Experimental evidence is provided, using X-ray techniques, of the presence of an L1(0) phase under certain conditions in the nickel-aluminide coatings protecting specimens of a single crystal Ni-based superalloy tested under thermomechanical fatigue. This phase, which is related to the occurrence of a martensitic transformation, is shown to have an effect on the stress required for crack initiation in the coating.

Additional information

Authors: OSTOLAZA K M, JRC Petten (NL);VALLÉS J L, JRC Petten (NL);BRESSERS J, JRC Petten (NL);SANCHEZ-PASCUAL A, INTA, Materials Department, Madrid (ES)
Bibliographic Reference: Paper presented: Surface Treatment 95, Milano (IT), June 7-9, 1995
Availability: Available from (1) as Paper EN 39115 ORA
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