Intergranular fracture in iron due to the presence of sulfur segregation and permanent hydrogen damage

Journal Article · Thu Sep 01 04:00:00 EDT 1983 · Scr. Metall.; (United States)

DOI:https://doi.org/10.1016/0036-9748(83)90466-0· OSTI ID:6463226

Shin, K S; Meshii, M

The grain boundary segregation of impurity elements such as oxygen, phosphorus, sulfur, etc. can cause intergranular fracture in iron at low temperatures. However, the information correlating the grain boundary strength directly to the amount of impurity segregation is very limited. Recently, the authors examined the effect of sulfur and hydrogen segregation on the grain boundary strength of iron and found that both elements significantly decreased the grain boundary strength of iron. It was found that the deleterious effects of sulfur and hydrogen on the grain boundary strength appeared to be additive in cases in which hydrogen produced either a reversible effect or a permanent effect. In the present study, the effect of sulfur segregation on grain boundary strength was separated from the permanent hydrogen effect by quenching the specimens from various temperatures in two different atmospheres, high purity argon and hydrogen. The nature of permanent hydrogen damage and the combined effect of sulfur segregation and permanent hydrogen damage were examined.

• Research Organization: Department of Materials Science and Engineering, The Technological Institute, Northwestern University, Evanston, IL
• OSTI ID: 6463226
• Journal Information: Scr. Metall.; (United States), Journal Name: Scr. Metall.; (United States) Vol. 17:9; ISSN SCRMB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ARGON
CHEMICAL REACTIONS
CORROSION
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTS
EMBRITTLEMENT
FLUIDS
FRACTURE MECHANICS
GASES
GRAIN BOUNDARIES
HYDROGEN
HYDROGEN EMBRITTLEMENT
IMPURITIES
INTERGRANULAR CORROSION
IRON
MECHANICAL PROPERTIES
MECHANICS
METALLURGICAL EFFECTS
METALS
MICROSTRUCTURE
NONMETALS
QUENCHING
RARE GASES
SEGREGATION
SULFUR
TRANSITION ELEMENTS