Corrosion Behaviour of Carbon Steel Fasteners in Neutral Chloride Solution

Daniel, Enobong Felix; Dong, Jie; Li, Xiaofang; Etim, Ini-Ibehe Nabuk; Udoh, Inime Ime; Ma, Renzhi; Chen, Lei; Wang, Changgang

doi:10.1007/s40195-021-01284-4

Cited by 11 publications

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effects of these factors on macroscopic properties and fracture behaviors of materials should also be investigated (Schwerdt et al 2011). At present, the fine characterization of this microstructure has become possible due to newly emerged research techniques and testing methods, including electron microscope, metalloscope, electron probe and Vickers microhardness test (Pilone et al 2015;Gong et al 2019;Wen et al 2020;Daniel et al 2022), which can be used to quantitatively analyze the microstructure of bolts and correlate it with macro-mechanical properties (Wu et al 2023;Zhou et al 2023), thus revealing its influence mechanism on bolt performance (Tao et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Multi-scale experimental study on the failure mechanism of high-strength bolts under highly mineralized environment

He,

Zhang,

Xie

et al. 2024

Geomech. Geophys. Geo-energ. Geo-resour.

View full text Add to dashboard Cite

High-strength bolts have become indispensable support materials in geotechnical engineering, but the incidence of safety accidents caused by bolt fractures under complex geological conditions is increasing. To address this challenge, this study focuses on a typical roadway in the Xinjulong coal mine, employing a combination of mechanical performance testing, microscopic and macroscopic analyses to investigate the failure mechanism of bolt breakage. The research indicates that the cracks in the failed bolts underground exhibit subcritical patterns, with the presence of oxides and Cl elements, and multiple intergranular fractures internally, consistent with the characteristics of stress corrosion failure. Additionally, inherent defects in the bolts are also a primary cause of failure. For instance, for type A bolts, the levels of P and S elements significantly exceed the normative requirements, forming inclusions, while the low content of elements like Si and V leads to reduced plasticity, toughness, and corrosion resistance. Furthermore, the excessive pitch in type A bolts leads to stress concentration and cracking under complex loads. The study concludes that the synergistic effect of stress corrosion cracking and inherent flaws in bolts are the main causes of failure. Therefore, it is recommended to enhance the reliability and safety of bolt support by optimizing the bolt shape and developing anti-corrosion bolts, thereby achieving long-term stability in underground engineering.

show abstract