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- Title
High Temperature Micromechanical Behavior of a Pt-Modified Nickel Aluminide Bond-Coating and of Its Interdiffusion Zone with the Superalloy Substrate.
- Authors
Texier, Damien; Monceau, Daniel; Selezneff, Serge; Longuet, Arnaud; Andrieu, Eric
- Abstract
The micromechanical properties of a β -(Ni,Pt)Al bond-coating was investigated between 700 ∘ C and 1000 ∘ C using ultrathin freestanding bond-coating specimens. Its brittle-to-ductile transition temperature was close to 750 ∘ C , with a significant ductility above 800 ∘ C (up to 23 pct at 1000 ∘ C ). The tensile strength decreased from 450 MPa at 750 ∘ C down to 50 MPa at 1000 ∘ C . Fractographic observations evidenced the material brittleness at intermediate temperature with large cleaved grains and its ductility above 750 ∘ C with important necking of individual grains.
- Subjects
HIGH temperatures; TRANSITION temperature; HEAT resistant alloys; NICKEL; TENSILE strength; DUCTILITY; BRITTLENESS
- Publication
Metallurgical & Materials Transactions. Part A, 2020, Vol 51, Issue 4, p1475
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-020-05634-2