Correlation of bonding of grain boundary and fracture mode with local electronic structure in steels by electron energy loss spectroscopy

X. Zhang; W. G. Yang; L. N. Zhang; J. J. Qi; J. Yuan

doi:10.1063/1.2731687

Correlation of bonding of grain boundary and fracture mode with local electronic structure in steels by electron energy loss spectroscopy

X. Zhang, W. G. Yang, L. N. Zhang, J. J. Qi, J. Yuan

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Electron energy loss spectroscopy (EELS) was used to study bonding of grain boundaries (GBs) in various types of commercial steels. It is found that if the GB has a higher occupancy of 3d states of iron than that of the grain, the sample tends to fracture intergranularly. Otherwise if the GB has a lower occupancy of 3d state of iron than the grain, the sample would have a strong GB bonding and tends to fracture transgranularly. It is proposed that EELS can estimate the GB cohesion and its impact on the fracture mode of commercial steels. (c) 2007 American Institute of Physics.

Original language	English
Article number	171905
Pages (from-to)	-
Number of pages	3
Journal	Applied Physics Letters
Volume	90
Issue number	17
DOIs	https://doi.org/10.1063/1.2731687
Publication status	Published - 23 Apr 2007

Keywords

BRITTLE-FRACTURE
EMBRITTLEMENT
SEGREGATION
MOLYBDENUM
COHESION
CARBON
NI3AL
IRON
EELS
3D

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Cite this

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title = "Correlation of bonding of grain boundary and fracture mode with local electronic structure in steels by electron energy loss spectroscopy",

abstract = "Electron energy loss spectroscopy (EELS) was used to study bonding of grain boundaries (GBs) in various types of commercial steels. It is found that if the GB has a higher occupancy of 3d states of iron than that of the grain, the sample tends to fracture intergranularly. Otherwise if the GB has a lower occupancy of 3d state of iron than the grain, the sample would have a strong GB bonding and tends to fracture transgranularly. It is proposed that EELS can estimate the GB cohesion and its impact on the fracture mode of commercial steels. (c) 2007 American Institute of Physics.",

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AU - Zhang, X.

AU - Yang, W. G.

AU - Zhang, L. N.

AU - Qi, J. J.

AU - Yuan, J.

PY - 2007/4/23

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AB - Electron energy loss spectroscopy (EELS) was used to study bonding of grain boundaries (GBs) in various types of commercial steels. It is found that if the GB has a higher occupancy of 3d states of iron than that of the grain, the sample tends to fracture intergranularly. Otherwise if the GB has a lower occupancy of 3d state of iron than the grain, the sample would have a strong GB bonding and tends to fracture transgranularly. It is proposed that EELS can estimate the GB cohesion and its impact on the fracture mode of commercial steels. (c) 2007 American Institute of Physics.

KW - BRITTLE-FRACTURE

KW - EMBRITTLEMENT

KW - SEGREGATION

KW - MOLYBDENUM

KW - COHESION

KW - CARBON

KW - NI3AL

KW - IRON

KW - EELS

KW - 3D

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SP - -

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