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Volume 31 Issue 11
Aug.  2021
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Article Contents
YANG Cheng-wei, Lü Nai-bing, WANG Xin-hua, WANG Wan-jun. Deoxidization thermodynamics of Ti-Al systems in molten steel at 1873K and precipitation of inclusions[J]. Chinese Journal of Engineering, 2009, 31(11): 1390-1393. doi: 10.13374/j.issn1001-053x.2009.11.028
Citation: YANG Cheng-wei, Lü Nai-bing, WANG Xin-hua, WANG Wan-jun. Deoxidization thermodynamics of Ti-Al systems in molten steel at 1873K and precipitation of inclusions[J]. Chinese Journal of Engineering, 2009, 31(11): 1390-1393. doi: 10.13374/j.issn1001-053x.2009.11.028

Deoxidization thermodynamics of Ti-Al systems in molten steel at 1873K and precipitation of inclusions

doi: 10.13374/j.issn1001-053x.2009.11.028
  • Received Date: 2009-05-12
    Available Online: 2021-08-09
  • The thermodynamic analysis and experiments of inclusions formation in a Ti-Al-O system in molten steel at 1 873 K were investigated. The results show that in the Ti-Al-O system the equilibrium between Al and O can be obtained instantly and the content of[O] is determined by the amount of Al. The formation of composite inclusions in the Ti-Al-O system depends on aTi/aAl values. According to thermodynamic data, the stable section in the phase diagram of composite inclusions (Al2O3-Ti3O5-Ti2O3) in the Ti-Al-O system was calculated. The composition of inclusions changes from Al2O3 to Ti3O5 as the aTi/aAl value increases. When the molten steel contains high amount of[O], it is very easy to form Ti3O5 inclusions. The experimental results agree well with thermodynamic data.

     

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      沈陽化工大學材料科學與工程學院 沈陽 110142

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