A modified fatigue model for life prediction of austenitic stainless steel corrugated plate structures under cryogenic conditions considering martensitic transformation effects

IF 6.8 2区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Fatigue Pub Date : 2025-07-22 DOI:10.1016/j.ijfatigue.2025.109190

Jiguang Zhang , Wei Zhang , Zewen Gu , Gongqi Cao , Jianlin Liu

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引用次数: 0

Abstract

Austenitic stainless steel (ASS) is widely used in diverse engineering disciplines such as liquefied natural gas (LNG) membrane storage tanks. Its fatigue performance under cryogenic conditions is of critical importance, owing to the complex and highly nonlinear mechanical behavior exhibited at cryogenic temperatures. However, limited research has been conducted on the fatigue behavior of ASS at cryogenic temperatures, particularly concerning the influence of phase transformation, such as strain-induced martensitic transformation. In this study, the fatigue characteristics and martensitic transformation behavior of ASS under cryogenic conditions are systematically investigated. The martensitic transformation of 304L stainless steel at various temperatures under cyclic loading is experimentally measured and analyzed using the X-ray diffraction (XRD). Based on these results, a phase transformation model under cyclic loading is developed. Furthermore, a modified fatigue life prediction model is proposed by incorporating the effects of martensitic transformation and a temperature-dependent shift factor. The proposed model is validated through numerical simulations and experimental fatigue tests. This comprehensive validation underscores the coupled influence of temperature, phase transformation, and fatigue response, enabling more accurate fatigue life predictions for ASS components operating in cryogenic environments.

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考虑马氏体相变效应的奥氏体不锈钢波纹板结构低温疲劳寿命预测改进模型

奥氏体不锈钢（ASS）广泛应用于各种工程学科，如液化天然气（LNG）膜储罐。由于其在低温下表现出复杂和高度非线性的力学行为，其低温条件下的疲劳性能至关重要。然而，关于低温下as的疲劳行为的研究有限，特别是关于相变的影响，如应变诱导马氏体相变。本研究系统地研究了低温条件下砷化铝的疲劳特性和马氏体相变行为。采用x射线衍射（XRD）对304L不锈钢在不同温度下的马氏体相变进行了实验测量和分析。在此基础上，建立了循环荷载作用下的相变模型。此外，结合马氏体相变和温度相关位移因子的影响，提出了一种改进的疲劳寿命预测模型。通过数值模拟和疲劳试验验证了该模型的有效性。这项综合验证强调了温度、相变和疲劳响应的耦合影响，从而能够更准确地预测在低温环境中工作的ASS组件的疲劳寿命。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.