A method for predicting nitrogen gas pores in nitrogen alloying stainless steels

A method for prediction of nitrogen gas pores in nitrogen alloying stainless steels was proposed with combining experimental and calculated results. The critical nitrogen content defined as maximum nitrogen content without nitrogen gas pores was experimentally determined. The critical nitrogen conte...

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Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2006-02, Vol.417 (1), p.307-314
Hauptverfasser: Yang, Seong-Ho, Lee, Zin-Hyoung
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creator Yang, Seong-Ho
Lee, Zin-Hyoung
description A method for prediction of nitrogen gas pores in nitrogen alloying stainless steels was proposed with combining experimental and calculated results. The critical nitrogen content defined as maximum nitrogen content without nitrogen gas pores was experimentally determined. The critical nitrogen content was converted to the critical nitrogen partial pressure with considering segregation of other alloying elements calculated by Thermo-Calc to predict the critical nitrogen content with different Mn levels. The predicted critical nitrogen content agreed favorably with experiments. This method can be used to predict the maximum amount of dissolved nitrogen permissible in the melt in order to avoid the formation of nitrogen gas pores.
doi_str_mv 10.1016/j.msea.2005.11.004
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subjects Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Gas pore
Materials science
Nitrogen
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
Solidification
Solubility
Stainless steel
title A method for predicting nitrogen gas pores in nitrogen alloying stainless steels
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