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- Title
Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment.
- Authors
Chuan Yang; Wenchen Xu; Bin Guo; Debin Shan; Jian Zhang
- Abstract
In order to investigate the methods to heal fatigue cracks in metals, tubular specimens of 1045 steel with axial and radial fatigue cracks were treated under the eddy current. The optical microscope was employed to examine the change of fatigue cracks of specimens before and after the eddy current treatment. The results show that the fatigue cracks along the axial direction of the specimen could be healed effectively in the fatigue crack initiation zone and the crack tip zone under the eddy current treatment, and the healing could occur within a very short time. The voltage breakdown and the transient thermal compressive stress caused by the detouring of eddy current around the fatigue crack were the main factors contributing to the healing in the fatigue crack initiation zone and the crack tip zone, respectively. Eddy current treatment may be a novel and effective method for crack healing.
- Subjects
FATIGUE cracks; MATERIAL fatigue; FATIGUE crack growth; EDDY currents (Electric); STRAINS &; stresses (Mechanics)
- Publication
Materials (1996-1944), 2016, Vol 9, Issue 8, p641
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma9080641