微观结构对超级马氏体不锈钢中细小疲劳裂纹萌生和早期扩展行为的影响

IF 5.7 2区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Fatigue Pub Date : 2024-09-17 DOI:10.1016/j.ijfatigue.2024.108604

Xue Li , Tian Ye , Yaohan Du , Min Zhan , Xiangyu Wang , Yajun Dai , Yongjie Liu , Chong Wang , Kun Yang , Chao He , Qingyuan Wang

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引用次数: 0

摘要

本研究旨在探讨马氏体多尺度界面对超级马氏体不锈钢疲劳小裂纹扩展行为的影响机制。研究结果表明，在从早期向稳定阶段过渡的过程中，裂纹扩展速度减慢。多尺度马氏体界面会导致不同程度的裂纹偏转，裂纹在早期扩展阶段倾向于沿边界扩展。马氏体板条是影响疲劳性能和小裂纹扩展行为的基本单元。

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Effect of microstructure on small fatigue crack initiation and early propagation behavior in super martensite stainless steel

The objective of this study is to investigate the influence mechanism of martensite multi-scale interfaces on the fatigue small cracks propagation behavior in super martensite stainless steel. The findings revealed that crack propagation slows during the transition from early to steady stages. Multiscale martensite interfaces can cause varying degrees of crack deflection, and cracks tend to propagate along-boundaries during the early propagation stage. Martensite lath is the basic unit that affects the fatigue performance and the behavior of small crack propagation.

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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.