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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)1109-1115
Number of pages7
JournalMetallurgical transactions. A, Physical metallurgy and materials science
Volume18 A
Issue number6
Publication statusPublished - 1987 Jun 1

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'SITE COMPETITION BETWEEN SULFUR AND CARBON AT GRAIN BOUNDARIES AND THEIR EFFECTS ON THE GRAIN BOUNDARY COHESION IN IRON.'. Together they form a unique fingerprint.

  • Cite this