Boron and Phosphorus Segregation Behavior at Grain Boundary in a Ti-If Steel after Annealing

Xin Li Song; Ze Xi Yuan; Juan Jia; Ping He Li; Di Wang; Li Xia Fan

doi:10.4028/www.scientific.net/AMR.152-153.320

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 152-153Boron and Phosphorus Segregation Behavior at Grain...

Boron and Phosphorus Segregation Behavior at Grain Boundary in a Ti-If Steel after Annealing

Abstract:

The cold roll B-added Ti-IF steel is annealed for different times at 810 oC. The microstructure development is studied by Optical Microscope（OM） and the concentration of boron and phosphorus segregation at grain boundary is measured by Auger electron spectroscopy（AES）. The result shows that the grain of the cold- rolled sample is elongated along the rolling direction and the elongated grains become into equi-axis shape after annealing 60 to 180sec. Boron and phosphorus segregated at gain boundaries. But boron’s concentration at grain boundary is higher than that of phosphorus and increase from 5at.% or so to about 10at% after annealing 150sec, Then boron’s concentration decrease slowly to 8at.% at 240sec. While phosphorus’s concentration increase to the max of 2.5at.% or so at 120sec, then its concentration decrease to 1at.% or so after annealing 240sec.

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Periodical:

Advanced Materials Research (Volumes 152-153)

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320-325

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.152-153.320

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Online since:

October 2010

Authors:

Xin Li Song, Ze Xi Yuan, Juan Jia, Ping He Li, Di Wang, Li Xia Fan

Keywords:

Annealing, Boron, Phosphorus, Segregation, Ti-IF Steel

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