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Inclusions and Microstructure of Steel Weld Deposits with Nanosize Titanium Oxide Addition
Joint Authors
Chen, Cuixin
Xue, Haitao
Peng, Huifen
Yan, Liang
Zhi, Lei
Wang, Sixu
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-18
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Nanosize TiO2 particles were added directly into welding molten pool through electrode for the difficulty of accurate control of oxygen potential and production processing parameters.
The characteristics of phase transformation and thermal behavior of inclusions for Fe-C-Mn-Si-Ti-O system and Fe-C-Mn-Si-TiO2 system were analyzed.
Results show that the added TiO2 particles are more helpful for the formation of Mn-Ti-O complex inclusion and can induce the decrease of phase transformation temperature of austenite to ferrite.
Intragranular ferrite can be obtained under the condition of continuous cooling transformation with cooling rate of 293 K/s–373 K/s.
The inclusions in steel welds are spherical in shape and mainly composed of TiO2, Ti3O5, Ti2O3, MnO, and SiO2.
The mean size of inclusions is 0.67 μm.
These complex inclusions can supply a large number of nucleating cores for their precipitation at higher temperature, which will disturb the growth of columnar crystal during solidification.
Moreover, Mn-containing titanium oxides will promote the transformation of austenite to intragranular ferrite for the formation of manganese depleted zones in steel welds around oxides.
So it can be concluded that nanosize titanium oxide added directly in welding molten pool can be effectively used to control phase transformation and achieve fine and favorable microstructure.
American Psychological Association (APA)
Chen, Cuixin& Xue, Haitao& Peng, Huifen& Yan, Liang& Zhi, Lei& Wang, Sixu. 2014. Inclusions and Microstructure of Steel Weld Deposits with Nanosize Titanium Oxide Addition. Journal of Nanomaterials،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1041224
Modern Language Association (MLA)
Chen, Cuixin…[et al.]. Inclusions and Microstructure of Steel Weld Deposits with Nanosize Titanium Oxide Addition. Journal of Nanomaterials No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1041224
American Medical Association (AMA)
Chen, Cuixin& Xue, Haitao& Peng, Huifen& Yan, Liang& Zhi, Lei& Wang, Sixu. Inclusions and Microstructure of Steel Weld Deposits with Nanosize Titanium Oxide Addition. Journal of Nanomaterials. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1041224
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1041224