1980•Journal of the Society of Materials Science JapanOpen access

Fracture Analysis of Some Environmental Failures in Service

Toshitsugu Ohi, Yukio Nagao

Abstract

This paper presents some failure examples of actual machine components caused by corrosion fatigue, stress corrosion and hydrogen embrittlement, and describes their fractographic features.Rotary machine components and chemical plant components were taken as examples of corrosion fatigue cracking, and stress corrosion or hydrogen embrittlement cracking, respectively.Microfractographic observations of fractured surfaces were carried out by a scanning electron microscope.

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Key concepts: Hydrogen embrittlement, Environmental stress fracture, Corrosion fatigue, Materials science, Corrosion, Cracking, Stress corrosion cracking, Fracture (geology)