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The anisotropic fatigue short crack initiation and propagation behaviours of a directionally solidified (DS) superalloy CM247LC at room temperature
  • +1
  • Yuanguo Tan,
  • Sari Octaviani,
  • Nong Gao,
  • Philippa Reed
Yuanguo Tan
University of Southampton Faculty of Engineering and Physical Sciences

Corresponding Author:[email protected]

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Sari Octaviani
Akademi Audiologi Indonesia Jakarta
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Nong Gao
University of Southampton Faculty of Engineering and Physical Sciences
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Philippa Reed
University of Southampton Faculty of Engineering and Physical Sciences
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Abstract

The effects of mechanical and microstructural anisotropy on short fatigue crack initiation and propagation behaviours of a directionally superalloy have been studied. An unusual result was found where the fatigue lives of specimens with grains longitudinally aligned along the loading direction fail at lower lifetimes than the specimens with transversely loaded grains when the applied stress is close to the yield stress. This is mainly attributed to the lower Young’s modulus of the longitudinal specimen, which induces more local plastic strain (at stress concentration features) leading to earlier crack initiation and faster crack propagation under the applied test stress.
21 Apr 2023Submitted to Fatigue & Fracture of Engineering Materials & Structures
22 Apr 2023Submission Checks Completed
22 Apr 2023Assigned to Editor
25 Apr 2023Reviewer(s) Assigned
09 May 2023Review(s) Completed, Editorial Evaluation Pending
23 May 2023Editorial Decision: Revise Major
20 Jun 20231st Revision Received
20 Jun 2023Submission Checks Completed
20 Jun 2023Assigned to Editor
21 Jun 2023Reviewer(s) Assigned
01 Jul 2023Review(s) Completed, Editorial Evaluation Pending
06 Jul 2023Editorial Decision: Revise Minor
10 Jul 20232nd Revision Received
10 Jul 2023Submission Checks Completed
10 Jul 2023Assigned to Editor
11 Jul 2023Review(s) Completed, Editorial Evaluation Pending
13 Jul 2023Editorial Decision: Accept