SITE COMPETITION BETWEEN SULFUR AND CARBON AT GRAIN BOUNDARIES AND THEIR EFFECTS ON THE GRAIN BOUNDARY COHESION IN IRON.

Shigeru Suzuki; S. Tanii; K. Abiko; H. Kimura

SITE COMPETITION BETWEEN SULFUR AND CARBON AT GRAIN BOUNDARIES AND THEIR EFFECTS ON THE GRAIN BOUNDARY COHESION IN IRON.

Shigeru Suzuki, S. Tanii, K. Abiko, H. Kimura

Division of Inorganic Material Research

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

Abstract

Grain boundary segregation in iron-sulfur-carbon alloys containing up to 100 wt ppm sulfur and up to 90 wt ppm carbon has been investigated with Auger electron spectroscopy (AES). The segregation energy of sulfur is estimated to be 75 kJ/mol. Impact tests were carried out. Iron-sulfur alloys with less than 20 wt ppm carbon fractured by the intergranular mode with high ductile-brittle transition temperatures (DBTT's). Addition of up to 90 wt ppm carbon prevented intergranular fracture and decreased the DBTT. Carbon, when segregated to grain boundaries, drives sulfur away from the boundaries and increases the grain boundary cohesion.

Original language	English
Pages (from-to)	1109-1115
Number of pages	7
Journal	Metallurgical transactions. A, Physical metallurgy and materials science
Volume	18 A
Issue number	6
Publication status	Published - 1987 Jun 1

ASJC Scopus subject areas

Engineering(all)

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title = "SITE COMPETITION BETWEEN SULFUR AND CARBON AT GRAIN BOUNDARIES AND THEIR EFFECTS ON THE GRAIN BOUNDARY COHESION IN IRON.",

abstract = "Grain boundary segregation in iron-sulfur-carbon alloys containing up to 100 wt ppm sulfur and up to 90 wt ppm carbon has been investigated with Auger electron spectroscopy (AES). The segregation energy of sulfur is estimated to be 75 kJ/mol. Impact tests were carried out. Iron-sulfur alloys with less than 20 wt ppm carbon fractured by the intergranular mode with high ductile-brittle transition temperatures (DBTT's). Addition of up to 90 wt ppm carbon prevented intergranular fracture and decreased the DBTT. Carbon, when segregated to grain boundaries, drives sulfur away from the boundaries and increases the grain boundary cohesion.",

author = "Shigeru Suzuki and S. Tanii and K. Abiko and H. Kimura",

year = "1987",

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day = "1",

language = "English",

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AU - Suzuki, Shigeru

AU - Tanii, S.

AU - Abiko, K.

AU - Kimura, H.

PY - 1987/6/1

Y1 - 1987/6/1

N2 - Grain boundary segregation in iron-sulfur-carbon alloys containing up to 100 wt ppm sulfur and up to 90 wt ppm carbon has been investigated with Auger electron spectroscopy (AES). The segregation energy of sulfur is estimated to be 75 kJ/mol. Impact tests were carried out. Iron-sulfur alloys with less than 20 wt ppm carbon fractured by the intergranular mode with high ductile-brittle transition temperatures (DBTT's). Addition of up to 90 wt ppm carbon prevented intergranular fracture and decreased the DBTT. Carbon, when segregated to grain boundaries, drives sulfur away from the boundaries and increases the grain boundary cohesion.

AB - Grain boundary segregation in iron-sulfur-carbon alloys containing up to 100 wt ppm sulfur and up to 90 wt ppm carbon has been investigated with Auger electron spectroscopy (AES). The segregation energy of sulfur is estimated to be 75 kJ/mol. Impact tests were carried out. Iron-sulfur alloys with less than 20 wt ppm carbon fractured by the intergranular mode with high ductile-brittle transition temperatures (DBTT's). Addition of up to 90 wt ppm carbon prevented intergranular fracture and decreased the DBTT. Carbon, when segregated to grain boundaries, drives sulfur away from the boundaries and increases the grain boundary cohesion.

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