Research status of low carbon high strength bainitic steel |
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Authors: | TIAN Ya- qiang TIAN Geng ZHENG Xiao- ping SONG Jin- ying WEI Ying- li CHEN Lian- sheng |
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Affiliation: | Key Laboratory of the Ministry of Education for Modern Metallurgy Technology?? North China University of Science and Technology, Tangshan 063009?? Hebei, China |
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Abstract: | The research status of low carbon Si- Mn bainitic steel at home and abroad in recent years was summarized. The mechanism of bainite transformation and the formation process were introduced. By analyzing the effects of alloying elements on the properties and microstructure of low carbon Si- Mn bainitic steel, the partitioning behavior of alloying element Mn in the process of dual phase insulation was discussed and the strengthening mechanism of low carbon bainitic steel was revealed. Finally, the relationship between the technology, organization and properties of low carbon high strength bainitic steel was elaborated and several kinds of preparation techniques which can obtain yield strength and elongation higher than 1000MPa and 15% respectively were introduced. On this basis, the main research directions of low carbon high strength bainitic steels were prospected. |
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Keywords: | low carbon bainitic steel alloy element toughness microstructure and property |
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