Grain boundary segregation in {l_angle}110{r_angle} symmetrical tilt bicrystals of an Fe-3%Si alloy

Journal Article · Sat Apr 01 00:00:00 EST 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-716X(95)00076-8· OSTI ID:39884

Yoshitomi, Y ^[1]; Suzuki, S ^[2]; Tsurekawa, S; Nakashima, H; Yoshinaga, H ^[3]

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1. Nippon Steel Corp., Kitakyushu (Japan)
2. Nippon Steel Corp., Chiba (Japan)
3. Kyushu Univ., Fukuoka (Japan). Dept. of Material Science and Technology

Grain oriented silicon steel is characterized by the presence of a sharp {l_brace}110{r_brace} <001> texture, which is produced by secondary recrystallization. It has been pointed out that, in an Fe-3%Si alloy in which there were precipitates, the evolution of {l_brace}110{r_brace}<001> texture is associated with the special grain boundary migration characteristics of {Sigma}9 type coincidence boundaries. It has also been reported that, in Fe-3%Si alloys in which there were precipitates, evolutions of {l_brace}110{r_brace}<111>, {l_brace}110{r_brace}<227>, {l_brace}100{r_brace}<001> textures are associated with the special grain boundary migration characteristics of {Sigma}9, {Sigma}5 and {Sigma}7 type coincidence boundaries, respectively. On the other hand, auger electron spectroscopy has been used to investigate grain boundary segregation in <100> symmetrical tilt bicrystals of Fe-Si alloys containing phosphorus and carbon. The results showed that phosphorus and carbon segregated at grain boundaries. Segregation of silicon was not observed, probably because the segregation of phosphorus and carbon dominated at grain boundaries. In order to make the basic background of the selective grain boundary migration clear, the present authors have investigated the grain boundary segregation in Fe-3%Si alloys with <110> symmetric tilt-boundaries, using Auger electron spectroscopy. In this study, {Sigma}9 coincidence boundaries and general boundaries were prepared for the investigation.

• OSTI ID: 39884
• Journal Information: Scripta Metallurgica et Materialia, Vol. 32, Issue 7; Other Information: PBD: 1 Apr 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON BASE ALLOYS
GRAIN BOUNDARIES
SILICON ALLOYS
SEGREGATION
AUGER ELECTRON SPECTROSCOPY
VACUUM MELTING
HOT WORKING
CHEMICAL COMPOSITION
CRYSTAL GROWTH
BICRYSTALS
SAMPLE PREPARATION