Plastic deformation-induced phosphorus segregation to ferrite grain boundaries in an interstitial free steel

▶ Plastic deformation causes non-equilibrium grain boundary phosphorus segregation. ▶ Deformation induced segregation increases with increasing deformation rate. ▶ Non-equilibrium segregation is induced by supersaturated vacancy-phosphorus complex. ▶ Model predictions show a reasonable agreement wit...

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Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 527; no. 29; pp. 7580 - 7584
Main Authors Chen, X.-M., Song, S.-H.
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier B.V 15.11.2010
Elsevier
Subjects
Alloy steels
Condensed matter: structure, mechanical and thermal properties
Defects and impurities in crystals; microstructure
Deformation
Exact sciences and technology
Ferrite
Grain and twin boundaries
Grain boundaries
Interstitial free steels
Mathematical models
Phosphorus
Physics
Plastic deformation
Segregation
Segregations
Strain rate
Structure of solids and liquids; crystallography
Grain boundaries
Interstitial free steels
Plastic deformation
Segregation
High temperature
Phosphorus additions
AES
Optical microscopy
Interstitial free steel
Microstructure
Grain boundary segregation
Impurity segregation
Strain rate
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Summary:▶ Plastic deformation causes non-equilibrium grain boundary phosphorus segregation. ▶ Deformation induced segregation increases with increasing deformation rate. ▶ Non-equilibrium segregation is induced by supersaturated vacancy-phosphorus complex. ▶ Model predictions show a reasonable agreement with the observations. Grain boundary concentration of phosphorus in an interstitial free steel is observed by virtue of Auger electron spectroscopy after the alloy is plastically deformed to different strains under different strain rates at a high temperature in the ferrite region. The results reveal that phosphorus segregates at grain boundaries during plastic deformation. The segregation increases with increasing deformation until reaching a steady value, and at the same deformation amount it increases with increasing strain rate. Model predictions are made, which shows a reasonable agreement between the predictions and the observations.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2010.08.054