Precipitates in an isothermally aged Fe-18Cr-12Mn-0.04C-0.48N high-nitrogen austenitic stainless steel
来源期刊：Rare Metals2007年第S1期
论文作者：SHI Feng,WANG Lijun,CUI Wenfang,REN Yuping,LI Hongxiao,and LIU Chunming School of Materials & Metallurgy,Northeastern University,Shenyang ,China
文章页码：185 - 190
摘 要：Vertical section of Fe-18Cr-12Mn-0.04C-N system phase diagram varying with nitrogen content at 1×105 Pa was calculated using Thermo-Calc software and thermodynamic database.The morphology and crystallography information of precipitates in Fe-18Cr-12Mn-0.04C-0.48N high-nitrogen austenitic stainless steel during isothermal aging at 800 ℃ after austenization was investigated using optical microscopy（OM）,and transmission electron microscopy（TEM） with energy distribution spectrum（EDS）.The experimental results show that three precipitates,（Cr,Fe,Mn）2（N,C）,（Cr,Fe,Mn）23（C,N）6 and σ phase exist in this steel,which is consistent with the thermodynamic calculation,indicating that thermodynamic calculation can provide instructions for alloy composition design,heat treatment and prediction of precipitation sequence in Fe-18Cr-12Mn-0.04C-N system.
SHI Feng,WANG Lijun,CUI Wenfang,REN Yuping,LI Hongxiao,and LIU Chunming School of Materials & Metallurgy,Northeastern University,Shenyang 110004,China
摘 要：Vertical section of Fe-18Cr-12Mn-0.04C-N system phase diagram varying with nitrogen content at 1×105 Pa was calculated using Thermo-Calc software and thermodynamic database.The morphology and crystallography information of precipitates in Fe-18Cr-12Mn-0.04C-0.48N high-nitrogen austenitic stainless steel during isothermal aging at 800 ℃ after austenization was investigated using optical microscopy（OM）,and transmission electron microscopy（TEM） with energy distribution spectrum（EDS）.The experimental results show that three precipitates,（Cr,Fe,Mn）2（N,C）,（Cr,Fe,Mn）23（C,N）6 and σ phase exist in this steel,which is consistent with the thermodynamic calculation,indicating that thermodynamic calculation can provide instructions for alloy composition design,heat treatment and prediction of precipitation sequence in Fe-18Cr-12Mn-0.04C-N system.
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