Corrosion Failure Analysis of 35CrMo Bolt in Wet Hydrogen Sulfide Environment

Hong Qi Shi; Yi Ding; Li Qun Ma; Xiao Dong Shen

doi:10.4028/www.scientific.net/AMM.291-294.2605

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 291-294Corrosion Failure Analysis of 35CrMo Bolt in Wet...

Corrosion Failure Analysis of 35CrMo Bolt in Wet Hydrogen Sulfide Environment

Abstract:

Failure analysis of fracture of 35CrMo bolt was investigated. It was analyzed by means of morphology and microstructure analysis, chemical composition analysis, hydrogen content analysis, scanning electron microscope (SEM) micro-morphology of fracture surface, electronic differential system (EDS) corrosion products analysis. The results showed that the cause of fracture of 35CrMo bolt was stress corrosion cracking. Working stress of the bolt，H2S in surroundings and the high hardness of the bolt combined caused cracking of the bolt. Suitable heat treatment for the 35CrMo bolt is suggested.

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Periodical:

Applied Mechanics and Materials (Volumes 291-294)

Pages:

2605-2609

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.291-294.2605

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Online since:

February 2013

Authors:

Hong Qi Shi, Yi Ding, Li Qun Ma, Xiao Dong Shen

Keywords:

35CrMo, Bolt, Heat Treatment, Hydrogen Sulfide, Stress Corrosion Cracking (SCC)

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