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High Temperature Materials and Processes

Editor-in-Chief: Fukuyama, Hiroyuki

Editorial Board: Waseda, Yoshio / Fecht, Hans-Jörg / Reddy, Ramana G. / Manna, Indranil / Nakajima, Hideo / Nakamura, Takashi / Okabe, Toru / Ostrovski, Oleg / Pericleous, Koulis / Seetharaman, Seshadri / Straumal, Boris / Suzuki, Shigeru / Tanaka, Toshihiro / Terzieff, Peter / Uda, Satoshi / Urban, Knut / Baron, Michel / Besterci, Michael / Byakova, Alexandra V. / Gao, Wei / Glaeser, Andreas / Gzesik, Z. / Hosson, Jeff / Masanori, Iwase / Jacob, Kallarackel Thomas / Kipouros, Georges / Kuznezov, Fedor


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Open Access
Online
ISSN
2191-0324
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Volume 32, Issue 3

Issues

Effect of Aluminum on the Nucleation of Intragranular Ferrite in Ti-Added Carbon Structural Steel

Kong Hui
  • School of Metallurgy and Resources, Anhui University of Technology, Maanshan, Anhui, 243002, P R China
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/ Shuai Shao
  • School of Metallurgy and Resources, Anhui University of Technology, Maanshan, Anhui, 243002, P R China
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/ YunFu Shen
  • School of Metallurgy and Resources, Anhui University of Technology, Maanshan, Anhui, 243002, P R China
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/ YaHui Zhou
  • School of Metallurgy and Resources, Anhui University of Technology, Maanshan, Anhui, 243002, P R China
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/ Qiang Yue
  • School of Metallurgy and Resources, Anhui University of Technology, Maanshan, Anhui, 243002, P R China
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/ JiuFeng Zhang
  • National center for quality supervision & test of steel material products, Maanshan, Anhui, 243002, P R China
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/ ZhengYu Cai
  • Corresponding author
  • School of Metallurgy and Resources, Anhui University of Technology, Maanshan, Anhui, 243002, P R China
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Published Online: 2013-06-15 | DOI: https://doi.org/10.1515/htmp-2012-0139

Abstract

The features of inclusion and microstructure for Ti-added carbon structural steel were studied through the scanning electron microscope (SEM) and Energy Dispersive Spectrometer (EDS). From the SEM-EDS mapping images, two kinds of titanium-contained oxides are observed. The type I is the Al-Ti-O phase, in which the elements of Al and Ti coexist. The type II is the titanium-contained oxides, which precipitate on the Al2O3. Through the statistical analysis, it can be seen that the former type is dominating in number and smaller in size. After etching, the microstructure of intragranular acicular ferrites (IAF) is observed, which is totally different from that in the comparison sample without Ti addition. Furthermore, it’s found that the type I inclusion can act as nucleation sites for the IAF. However, the similar nucleation phenomenon is complex for the type II inclusion. This complexity is attributed to the diversity of precipitation of Ti and Mn.

Keywords: oxide inclusion; intragranular acicular ferrite; oxide metallurgy; grain refinement

About the article

Received: 2012-09-01

Accepted: 2012-10-06

Published Online: 2013-06-15

Published in Print: 2013-06-14


Citation Information: High Temperature Materials and Processes, Volume 32, Issue 3, Pages 323–329, ISSN (Online) 2191-0324, ISSN (Print) 0334-6455, DOI: https://doi.org/10.1515/htmp-2012-0139.

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