提出了一种新的退火热处理激光沉积修复TA15构件疲劳寿命预测方法

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-04-25 DOI:10.1016/j.engfailanal.2025.109649

Song Zhou , Zhaoxing Qian , Zhenjun Zhang , Xin Bai

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引用次数: 0

摘要

疲劳性能对激光沉积修复退火热处理TA15构件(LDR &；用于航空航天。然而，目前的疲劳寿命预测方法无法预测LDR的疲劳寿命。AHT TA15构件由于疲劳损伤模型或实验数据精度的限制。预测LDR的疲劳寿命；基于AHT TA15构件微观组织转变的疲劳物理特性，建立了一种考虑退火热处理的新型疲劳预测模型（FLRA模型）。在此基础上，提出了一种基于FLRA模型的疲劳寿命预测新方法EFL法。通过与LDR试验疲劳寿命的比较；AHT TA15与传统方法、FLRA模型和EFL方法具有较高的精度和较强的鲁棒性（即应力集中位置、最大累积损伤位置和损伤值累积）。此外，对FLRA模型的参数进行了微观疲劳物理分析。

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A novel fatigue life prediction method for the laser deposition repaired TA15 component with annealing heat treatment

The fatigue properties are very important for the laser deposition repaired TA15 component with annealing heat treatment (named as LDR & AHT TA15) used in aerospace. However, the current fatigue life prediction methods can not predict the fatigue life of the LDR & AHT TA15 component due to the limitation of the fatigue damage model or the experimental data accuracy. To predict the fatigue life of the LDR & AHT TA15 component, a new fatigue prediction model with considering annealing heat treatment (named as FLRA model) is established based on the fatigue physics of the microstructure transformation. Then a new fatigue life prediction method (named as EFL method) based on the FLRA model is proposed. By comparing with the experimental fatigue life of the LDR & AHT TA15 and the traditional method, the FLRA model and the EFL method show high accuracy and strong robustness (i.e. the location of stress concentration, the location of the maximum cumulative damage and the accumulation of the damage value). Furthermore, the parameters of the FLRA model are illustrated in microstructure fatigue physics.

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.