Al含量对高锰TWIP钢中夹杂物的影响
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摘要
本文通过实验并结合FactSage热力学计算研究了不同Al含量下Fe-16Mn-xAl-0.6C高锰TWIP钢中夹杂物的演变规律。结果表明,随着钢中Al含量从0.002wt%增加到2.1wt%,氧化物夹杂演变规律为MnO→Al_2O_3→MgO/Al_2O_3→MgO,硫化物夹杂从MnS转变为MgS,另外钢中主要夹杂物演变规律为MnO→Al_2O_3/MnS→MnS→AlN。FactSage热力学计算结果与实验结果相吻合。
In the present study,the effects of Al content on the evolution of inclusions formed in high Mn TWIP steels were investigated experimentally and discussed based on the thermodynamic calculation with FactSage.The results show that with the increase of Al content from 0.002 wt-%to 2.1 wt-%in the steels,the evolution route of main oxide inclusions is MnO→Al_2O_3→MgAl_2O_4→MgO;the main sulfide inclusion is changed from MnS to MgS;and the dominant stable inclusion changes along the path of MnO→Al_2O_3/MnS→MnS→AIN.The main inclusion types in thermodynamic calculation results are consistent with the observed results in the present experimental steels.
引文
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