Abstract
The fracture failure of 20MnTiB steel high-strength bolts in some bridges occurred. To reveal the reason for the fracture failure of the high-strength bolts, macroscopic analysis , chemical analysis, phase analysis, microscopic analysis , and metallographic analysis were carried out on one of the failed high-strength bolts . The results show that the corrosion products on the fracture surface of the failed high-strength bolt are mainly composed of SiO2, Fe2O3 , and Al2O3 and contain the elements S and Cl by energy spectrum analysis. The fracture analysis of the failed high-strength bolt shows that it had two crack sources, one was outward expansion caused by the notch, and the final fracture turned out tongue pattern, while the other was outward expansion in the form of branches, and the final fracture turned out intergranular fracture morphology . It can be deduced that the main cause of the high-strength bolt fracture is machining defects and stress corrosion .
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Berman JW, Wang BS, Olson AW (2012) Rapid assessment of gusset plate safety in steel truss bridges. J Bridge Eng 17(2):221–231
Berman JW, Wang BS, Roeder CW (2010) Triage evaluation of gusset plates in steel truss bridges. Load factor
Li Y, Wang H, Zhang Y (2013) Analysis on local mechanical properties of high strength bolt gusset joints in steel trussed girder bridges. J Shijiazhuang Tiedao Univ Nat Sci 26(03):1–7
Zhou L, Wang C, Li J (2007) Damage analysis of continuous steel truss bridge on railway. SiChuang Archit S1:104–105
Meng W, Zeng W, Gu J, Chen X, Liu J (2017) Failure analysis on early fatigue fracture of a 109 grade bolt. Phys Test Chem Anal Part A Phys Test 53(05):365–367
Shi K, Li Z, Liu Y (2018) Failure analysis of bolts. Metal Working Hot Working 06:81–84
Li M, Chenghao P, Li C, Pan L (2017) Fracture failure analysis on 35VB steel high strength bolt. Hot Working Technol 46(18):259–263
Li GD, Li N (2017) The research on delayed fracture behavior of high-strength bolts in steel structure. Mater Sci Eng Conf Ser
Zhang J, Li A, Zhang C (2016) Failure and fracture analysis of bolt assembled on the fan used in the internal combustion engine. J Fail Anal Prev 16(2):302–309
Song X, Jiang X, Dong L (2017) Fracture mechanism and countermeasure of cylinder cover bolt in a make-up gydrogen compressor. Corros Prot 38(11):894–897
Lin Q, Yang X (2009) Fracture analysis of a high strength bolt. Hot Working Technol 38(2):128–130
Liu M (2018) Fracture failure analysis of high pressure bolt. Petro-chem Equip 47(3):78–81
W Juan, L Zheng, H Tao, L Lan (2018) Simple analysis on failure of high strength bolts in Chongqing Chaotianmen Bridge. Mater Sci Eng
Winkler EM (1970) The importance of air pollution in the corrosion of stone and metals. Eng Geol 4:327–334
Cheng X, Zhang G, Li X (2018) Effects of suspended particulates on atmospheric environmental corrosion by mathematical analysis. Science China Press 48(4):395–402
Acknowledgements
The authors are grateful for the support from Chongqing Key Laboratory of Energy and Environment Engineering and Chongqing Cheng Tou Road and Bridge Administration Co. Ltd.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Liu, L., Wen, J., Liu, Q., Chen, L. (2020). Fracture Failure Analysis on 20MnTiB Steel High-Strength Bolt Used in Bridges. In: TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36296-6_130
Download citation
DOI: https://doi.org/10.1007/978-3-030-36296-6_130
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-36295-9
Online ISBN: 978-3-030-36296-6
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)