Effect of phosphorus segregation on fracture properties of two quenched and tempered structural steels

Rengen Ding; A Islam; Su Wu; John Knott

doi:10.1179/174328405X27115

Effect of phosphorus segregation on fracture properties of two quenched and tempered structural steels

Rengen Ding, A Islam, Su Wu, John Knott

Metallurgy and Materials

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

26 Citations (Scopus)

Abstract

Segregation of phosphorus to grain boundaries in commercial grade 2?25Cr1Mo and A533B steels subjected to a variety of heat treatments has been examined using field emission gun scanning transmission electron microscope (FEGSTEM) with energy dispersive X-ray microanalysis. The measured grain boundary P concentrations have been used to explain the low temperature brittle fracture behaviour, which exhibits increasing levels of intergranular
embrittlement as a function of aging time at 520uC. The results show that P segregation at grain boundaries has a strong effect on the intergranular area fraction, the microscopic fracture stress, and the fracture toughness. Phosphorus peak height ratios measured using auger electron spectroscopy are shown to follow a linear relationship with the FEGSTEM/X-ray values.

Original language	English
Pages (from-to)	467-475
Number of pages	9
Journal	Materials Science and Technology
Volume	21
Issue number	4
DOIs	https://doi.org/10.1179/174328405X27115
Publication status	Published - 1 Apr 2005

Keywords

segregation
fracture properties
grain boundaries
phosphorus
steel

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abstract = "Segregation of phosphorus to grain boundaries in commercial grade 2?25Cr1Mo and A533B steels subjected to a variety of heat treatments has been examined using field emission gun scanning transmission electron microscope (FEGSTEM) with energy dispersive X-ray microanalysis. The measured grain boundary P concentrations have been used to explain the low temperature brittle fracture behaviour, which exhibits increasing levels of intergranularembrittlement as a function of aging time at 520uC. The results show that P segregation at grain boundaries has a strong effect on the intergranular area fraction, the microscopic fracture stress, and the fracture toughness. Phosphorus peak height ratios measured using auger electron spectroscopy are shown to follow a linear relationship with the FEGSTEM/X-ray values.",

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T1 - Effect of phosphorus segregation on fracture properties of two quenched and tempered structural steels

AU - Ding, Rengen

AU - Islam, A

AU - Wu, Su

AU - Knott, John

PY - 2005/4/1

Y1 - 2005/4/1

N2 - Segregation of phosphorus to grain boundaries in commercial grade 2?25Cr1Mo and A533B steels subjected to a variety of heat treatments has been examined using field emission gun scanning transmission electron microscope (FEGSTEM) with energy dispersive X-ray microanalysis. The measured grain boundary P concentrations have been used to explain the low temperature brittle fracture behaviour, which exhibits increasing levels of intergranularembrittlement as a function of aging time at 520uC. The results show that P segregation at grain boundaries has a strong effect on the intergranular area fraction, the microscopic fracture stress, and the fracture toughness. Phosphorus peak height ratios measured using auger electron spectroscopy are shown to follow a linear relationship with the FEGSTEM/X-ray values.

AB - Segregation of phosphorus to grain boundaries in commercial grade 2?25Cr1Mo and A533B steels subjected to a variety of heat treatments has been examined using field emission gun scanning transmission electron microscope (FEGSTEM) with energy dispersive X-ray microanalysis. The measured grain boundary P concentrations have been used to explain the low temperature brittle fracture behaviour, which exhibits increasing levels of intergranularembrittlement as a function of aging time at 520uC. The results show that P segregation at grain boundaries has a strong effect on the intergranular area fraction, the microscopic fracture stress, and the fracture toughness. Phosphorus peak height ratios measured using auger electron spectroscopy are shown to follow a linear relationship with the FEGSTEM/X-ray values.

KW - segregation

KW - fracture properties

KW - grain boundaries

KW - phosphorus

KW - steel

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JO - Materials Science and Technology

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Effect of phosphorus segregation on fracture properties of two quenched and tempered structural steels

Abstract

Keywords

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