The impact of hydrogen on mechanical performance of carbon alloy plates detected by eddy current method

IF 3 3区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Nondestructive Testing and Evaluation Pub Date : 2023-04-02 DOI:10.1080/10589759.2023.2195647

Haiting Zhou, Huandong Huang, Dongdong Ye, Qiang Wang, Chenxi Zhu

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Abstract

ABSTRACT Hydrogen diffuses in the material and accumulates in dislocations, holes, etc. which will lead to deterioration of the mechanical properties of the material and affect the health state of the structural parts of hydrogen service. In this paper, a characterisation method for the degradation degree of hydrogen-induced properties of materials based on eddy current response signal is proposed. Based on the semi-infinite planar source diffusion model and hydrogen permeation model, an improved hydrogen diffusion and distribution analysis model was established, and an early hydrogen damage eddy current detection model for multilayer conductive structure materials was constructed. The evolution of material properties under the action of hydrogen was analysed, and a linear relationship between hydrogen content and conductivity was obtained. The loss of elongation was selected as the damage index and the relationship between the eddy current response signal and hydrogen embrittlement performance index is established. Experiments verify that the eddy current response signal is sensitive to the performance index and increases with the intensification of hydrogen-induced performance degradation.

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用涡流法检测氢对碳合金板力学性能的影响

氢在材料中扩散并积聚在位错、孔洞等处，会导致材料力学性能的恶化，影响加氢服役结构件的健康状态。本文提出了一种基于涡流响应信号的材料氢致性能降解程度表征方法。基于半无限平面源扩散模型和氢渗透模型，建立了改进的氢扩散分布分析模型，构建了多层导电结构材料早期氢损伤涡流检测模型。分析了氢作用下材料性能的演变，得到了氢含量与电导率之间的线性关系。选择伸长率损失作为损伤指标，建立了涡流响应信号与氢脆性能指标之间的关系。实验验证了涡流响应信号对性能指标的敏感性，并随着氢致性能退化的加剧而增大。

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来源期刊

Nondestructive Testing and Evaluation 工程技术-材料科学：表征与测试

CiteScore

4.30

自引率

11.50%

发文量

审稿时长

4 months

期刊介绍： Nondestructive Testing and Evaluation publishes the results of research and development in the underlying theory, novel techniques and applications of nondestructive testing and evaluation in the form of letters, original papers and review articles. Articles concerning both the investigation of physical processes and the development of mechanical processes and techniques are welcomed. Studies of conventional techniques, including radiography, ultrasound, eddy currents, magnetic properties and magnetic particle inspection, thermal imaging and dye penetrant, will be considered in addition to more advanced approaches using, for example, lasers, squid magnetometers, interferometers, synchrotron and neutron beams and Compton scattering. Work on the development of conventional and novel transducers is particularly welcomed. In addition, articles are invited on general aspects of nondestructive testing and evaluation in education, training, validation and links with engineering.