Fracture surface of hydrogen embrittlement in iron single crystals

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90257-S· OSTI ID:6449931

Takano, N; Kidani, K; Hattori, Y; Terasaki, F ^[1]

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1. Kanazawa Inst. of Tech., Ishikawa (Japan)

Hydrogen embrittlement of iron and low strength steels has been studied for a long time. Its mechanism, however has not been explained clearly yet. Fractography is often used as a method for the study of the fracture mechanism. The fracture process, for example, microvoid coalescence (MVC), cleavage, grain boundary fracture and so on, can be determined by means of fractography. Then it is possible to understand by which process hydrogen causes the embrittlement. The purpose of the present work is to investigate the characteristics of such fracture surfaces and to deduce the fracture mechanism. As for the embrittlement of iron and steels, they often occur after a fair amount of plastic deformation, which strongly depends on the crystallographic orientation and temperature. In this paper, the fracture surfaces of the hydrogen embrittlement are investigated with various crystallographic orientation and temperatures.

• OSTI ID: 6449931
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 29:1; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON
HYDROGEN EMBRITTLEMENT
STEELS
EXPERIMENTAL DATA
FRACTOGRAPHY
GRAIN BOUNDARIES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
ALLOYS
CRYSTAL STRUCTURE
DATA
ELEMENTS
EMBRITTLEMENT
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
METALS
MICROSTRUCTURE
NUMERICAL DATA
TEMPERATURE RANGE
TRANSITION ELEMENTS
360103* - Metals & Alloys- Mechanical Properties