Effect of pitting corrosion on the mechanical properties and fracture model of steel wires for bridge cable

IF 2.6 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Anti-corrosion Methods and Materials Pub Date : 2023-05-09 DOI:10.1108/acmm-02-2023-2763

Zhuangsu Kang, Zongxing Zhang, Shen-you Song, Q. Cheng, Siyu Tao, Ya Ni

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引用次数: 1

Abstract

Purpose This paper aims to investigate the effect of characteristic parameters of pits on the mechanical properties and fracture model of cable steel wires. Design/methodology/approach The tensile test and finite element analysis of steel wires with corrosion damage were carried out. The stress development of corroded steel wire under corrosion morphology was studied by the 3D reverse reconstruction technology. The internal relationship between the stress triaxiality, equivalent plastic strain and pit depth, depth-width ratio of corroded steel wire was discussed. Findings With the increase of corrosion degree, the neck shrinkage phenomenon of steel wire was not significant, and the crack originated near the pit bottom and expanded to the section inside of specimen. The fiber area of corroded steel wire decreased while the radiation area increased, and the ductile fracture gradually changed to brittle fracture. The pit size significantly changed the triaxial degree and distribution of stress and accelerated the initiation and propagation of internal cracks at the neck shrinkage stage. Originality/value The proposed fracture model based on the void growth model could accurately simulate the fracture behavior of steel wires with corrosion damage.

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点蚀对桥梁缆索用钢丝力学性能和断裂模型的影响

目的研究矿坑特征参数对电缆钢丝力学性能和断裂模式的影响。设计/方法/方法对腐蚀损伤钢丝进行了拉伸试验和有限元分析。采用三维反重构技术研究了腐蚀钢丝在腐蚀形态下的应力发展规律。讨论了腐蚀钢丝的应力三轴性、等效塑性应变与坑深、深宽比的内在关系。结果:随着腐蚀程度的增加，钢丝的颈部收缩现象不明显，裂纹起源于坑底附近，并向试件内部截面扩展。腐蚀钢丝的纤维面积减小，辐射面积增大，韧性断裂逐渐向脆性断裂转变。坑的大小显著改变了应力的三轴程度和分布，加速了颈部收缩阶段内部裂纹的萌生和扩展。本文提出的基于空洞扩展模型的断裂模型能够准确地模拟具有腐蚀损伤的钢丝的断裂行为。

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来源期刊

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.