Investigation of fretting fatigue performance for IN718 dovetail joint in very high cycle regime

IF 5.7 2区材料科学 Q1 ENGINEERING, MECHANICAL International Journal of Fatigue Pub Date : 2025-02-11 DOI:10.1016/j.ijfatigue.2025.108874

Zeshuai Shen, Zhiyong Huang, Jian Wang, Liangqi Zheng, Hongjiang Qian, Qingyun Zhu

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Abstract

This study investigated the fracture mechanisms of dovetail joints under very high cycle fretting fatigue (VHCFF) loading and predicted the short crack propagation behavior through experiment and simulation. Dovetail specimens designed and manufactured using Inconel 718 superalloy are tested at room temperature (RT) and high temperature (650 °C). The scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM) are used to analyze the fracture surface morphology and microstructural features at crack initiation sites. A fretting fatigue indicator parameter (FFIP) is proposed with the help of crystal plasticity finite element (CPFE) method to predict the short crack path. The results show that: 1) Oxides generated on the wear surface at high temperature tend to initiate cracks; 2) The crack path at RT is affected by types of grain boundaries, Schmid factor, twist angle and tilt angle; 3) The crack path determined by FFIP shows an agreement with the experimentally observed short crack propagation behavior.

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来源期刊

International Journal of Fatigue 工程技术-材料科学：综合

CiteScore

10.70

自引率

21.70%

发文量

619

审稿时长

58 days

期刊介绍： Typical subjects discussed in International Journal of Fatigue address: Novel fatigue testing and characterization methods (new kinds of fatigue tests, critical evaluation of existing methods, in situ measurement of fatigue degradation, non-contact field measurements) Multiaxial fatigue and complex loading effects of materials and structures, exploring state-of-the-art concepts in degradation under cyclic loading Fatigue in the very high cycle regime, including failure mode transitions from surface to subsurface, effects of surface treatment, processing, and loading conditions Modeling (including degradation processes and related driving forces, multiscale/multi-resolution methods, computational hierarchical and concurrent methods for coupled component and material responses, novel methods for notch root analysis, fracture mechanics, damage mechanics, crack growth kinetics, life prediction and durability, and prediction of stochastic fatigue behavior reflecting microstructure and service conditions) Models for early stages of fatigue crack formation and growth that explicitly consider microstructure and relevant materials science aspects Understanding the influence or manufacturing and processing route on fatigue degradation, and embedding this understanding in more predictive schemes for mitigation and design against fatigue Prognosis and damage state awareness (including sensors, monitoring, methodology, interactive control, accelerated methods, data interpretation) Applications of technologies associated with fatigue and their implications for structural integrity and reliability. This includes issues related to design, operation and maintenance, i.e., life cycle engineering Smart materials and structures that can sense and mitigate fatigue degradation Fatigue of devices and structures at small scales, including effects of process route and surfaces/interfaces.