Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 803, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.140729
Keywords
High magnetic field; Heat treatment; Superalloy; Microstructure; Creep
Categories
Funding
- National Natural Science Foundation of China [92060104]
- National Natural Science and Technology Major Project [2017-VII-0008-0102]
- Major Program of National Natural Science Foundation of China [51690162]
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The creep properties of nickel-base single crystal superalloy CMSX-4 with and without high magnetic field at 980 degrees C/250 MPa are investigated. Results show that the presence of high magnetic field enhances rupture life and changes fracture behavior, with differences in fracture surface morphology and microporosity distribution.
The creep properties of nickel-base single crystal superalloy CMSX-4 with and without high magnetic field at 980 degrees C/250 MPa are investigated. Superalloy CMSX-4 is shown with an excellent rupture life under high magnetic field. Fracture surface results indicate that small square-shaped facets are shown and microporosities are formed at the bottom of dimple without high magnetic field, while the dimple surface shows large square-shaped facets and microporosities disappear from the bottom of dimple with high magnetic field. The mechanism of the enhancement of rupture life and the change of fracture behavior are explored in detail.
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