Correlation between Microstructures and Yield Strength of a High Strength Enameling Steel

材料科学技术（英文）, 2012, 28(8): 737-744.

Correlation between Microstructures and Yield Strength of a High Strength Enameling Steel

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1.Jiangsu Key Laboratory for Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China

2.Jiangsu Key Laboratory for Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China

3.Jiangsu Key Laboratory for Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China

4.AO Smith Corporate Technology Center, Milwaukee, WI, 53224, USA

5.Jiangsu Key Laboratory for Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China

基金项目: Acknowledgements The authors wish to thank CompuTherm Company, USA, for generously providing us with the license of Pandat software. This work was financially supported by AO Smith Corporate Technology Center, USA

关键词：屈服强度 , 显微组织 , 高强度 , 搪瓷 , 合金元素 , 钢 , 经验关系式 , 热力学计算

Correlation between Microstructures and Yield Strength of a High Strength Enameling Steel

Keywords： Enameling steel , Enamel-fire anneal , Microstructure , Yield strength , Thermodynamic calculation ,

Numerical estimates of the components of yield strength of a high strength Fe-C-Mn-P-N-Si enameling steel were determined using empirical relationships between microstructure and yield strength. Results are reported for both the hot rolled （HR） and cold rolled （CR） forms before and after simulating an enamel-fire anneal （EFA）. To determine the solubilities of alloying elements, thermodynamic calculations were performed in combination with the considerations of process conditions and the element diffusivities. The results show that the main solid solution strengtheners were the elements Mn, Si, and P, while the elements C and N were nearly completely tied up as precipitates. The yield strength reduction, due to the EFA, resulted primarily from an increase in grain size and a decrease in dislocation density, and the EFA appeared to have a negligible effect on the element solubilities.

参考文献

[1]	R. Stasko;H. Adrian;A. Adrian .Effect of nitrogen and vanadium on austenite grain growth kinetics of a low alloy steel[J].Materials Characterization,2006(4/5):340-347.
[2]	R. D. K. Misra;H. Nathani;J. E. Hartmann .Microstructural evolution in a new 770 MPa hot rolled Nb-Ti microalloyed steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):339-352.

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Correlation between Microstructures and Yield Strength of a High Strength Enameling Steel

Correlation between Microstructures and Yield Strength of a High Strength Enameling Steel

参考文献