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Precipitation Behavior of Ti-Containing Inclusions During Solidification of Ti Microalloyed High-Strength Steel
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Aihua LIU1, Lingnan KONG1, Chunhui LI2, Jianghua QI2, Zhiguo CHEN1, Yuchen YANG1, Fei LI1
Mining and Metallurgical Engineering | 2025, 45(3) : 185 - 190
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Mining and Metallurgical Engineering | 2025, 45(3): 185-190
• MATERIALS •
Precipitation Behavior of Ti-Containing Inclusions During Solidification of Ti Microalloyed High-Strength Steel
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Aihua LIU1, Lingnan KONG1, Chunhui LI2, Jianghua QI2, Zhiguo CHEN1, Yuchen YANG1, Fei LI1
Affiliations
  • 1.School of Energy and Electromechanical Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, Hunan, China
  • 2.Hunan Valin Lianyuan Iron and Steel Co., Ltd., Loudi 417009, Hunan, China
Published: 2025-06-01 doi: 10.3969/j.issn.0253-6099.2025.03.031
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Effects of elements Ti and N on the precipitation behavior of TiN inclusions during the solidification of Timicroalloyed high-strength steel were studied by thermodynamic calculation and microscopic analysis. Thermodynamic calculation results indicate that the precipitation of TiN inclusions is unavoidable at the solidification front, but can be delayed by reducing the value of w(N)0×w(Ti)0. The final size of TiN inclusions is mainly affected by the initial nitrogen content in molten steel, and TiN inclusions can be smaller by reducing the initial nitrogen content. Microscopic analysis shows that with the contents (mass fraction) of Ti and N decreasing from 0.12% and 0.005% to 0.08% and 0.003%, respectively, the number density and average size of TiN inclusions can be decreased by 27.1% and 50.2%, which also confirms the thermodynamic calculation results.

microalloying  /  high-strength steel  /  thermodynamics  /  inclusion  /  TiN  /  precipitation behavior  /  titanium  /  nitrogen
Aihua LIU, Lingnan KONG, Chunhui LI, Jianghua QI, Zhiguo CHEN, Yuchen YANG, Fei LI. Precipitation Behavior of Ti-Containing Inclusions During Solidification of Ti Microalloyed High-Strength Steel[J]. Mining and Metallurgical Engineering, 2025 , 45 (3) : 185 -190 . DOI: 10.3969/j.issn.0253-6099.2025.03.031
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doi: 10.3969/j.issn.0253-6099.2025.03.031
  • Receive Date：2024-12-25
  • Online Date：2026-03-19
  • Published：2025-06-01
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  • Received：2024-12-25
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Affiliations
    1.School of Energy and Electromechanical Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, Hunan, China
    2.Hunan Valin Lianyuan Iron and Steel Co., Ltd., Loudi 417009, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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