糊状区保温对Cr9Mn14Ni0.5合金氮含量的影响
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摘要
结合Cr9Mn14Ni0.5合金凝固模式的特点,研究了在糊状区保温对其氮含量的影响。结果表明,糊状区保温可以有效地提高合金的氮含量。在0.6 MPa的氮气氛下进行糊状区保温20min,氮的质量分数可达0.43%。尽管糊状区保温会导致奥氏体晶粒的粗化,但是由于氮含量的增加,压缩性能会得到提高。糊状区保温可以在避开凝固过程中铁素体区的同时,促进液相中的氮向奥氏体扩散,这是糊状区保温能够提高氮含量的原因。
The effect of holding Cr9Mn14Ni0.5alloy melt in mushy zone on its nitrogen content was investigated.It is found that holding the melt in mushy zone can effectively increase the nitrogen solubility of the alloy,and a significant grain coarsening occurs during holding the alloy in mushy zone.Because of the increase of nitrogen content,the compression property of the alloy would be improved.A maximum mass fraction of nitrogen of 0.43%was achieved by holding the melt in mushy zone for 20 min.Holding the melt in mushy zone can avoid the formation of ferrite and facilitate the diffusion of nitrogen from liquid phase into austenite,which is considered to be the reason for the increase of nitrogen content.
The effect of holding Cr9Mn14Ni0.5alloy melt in mushy zone on its nitrogen content was investigated.It is found that holding the melt in mushy zone can effectively increase the nitrogen solubility of the alloy,and a significant grain coarsening occurs during holding the alloy in mushy zone.Because of the increase of nitrogen content,the compression property of the alloy would be improved.A maximum mass fraction of nitrogen of 0.43%was achieved by holding the melt in mushy zone for 20 min.Holding the melt in mushy zone can avoid the formation of ferrite and facilitate the diffusion of nitrogen from liquid phase into austenite,which is considered to be the reason for the increase of nitrogen content.
引文
[1]向红亮,顾兴.含氮不锈钢研究概况[J].金属世界,2013(1):30.
[2]Charles J.The new 200-series:an alternative answer to Ni surcharge dream or nightmare[J].Stainless Steel,2005(5):19.
[3]李花兵.高氮奥氏体不锈钢的冶炼理论基础及其材料性能研究[D].沈阳:东北大学,2008.
[4]崔大伟,曲选辉,李科.高氮低镍奥氏体不锈钢的研究进展[J].材料导报,2005,19(12):64.
[5]Simmons J W.Overview:high-nitrogen alloying of stainless steels[J].Materials Science and Engineering,1996,207A:159.
[6]Rawers J C,Dunning J S,Asai G,et al.Characterization of stainless steels melted under high nitrogen pressure[J].Metallurgical Transactions,1992,23A:1992.
[7]Feichtinger H,Stein G.Melting of high nitrogen steels[J].Materials Science Forum,1999,318(320):261.
[8]陆利明,李宏,壮云乾,等.氮气加压熔炼高氮钢若干理论问题探讨[J].钢铁研究学报,1996,8(1):6.
[9]高亦斌,陈根保,金卫强.AOD精炼高氮奥氏体不锈钢1Cr22Mn15N的工艺实践[J].特殊钢,2005,26(2):51.
[10]Yang Seong-Ho,Lee Zin-Hyoung.A method for predicting nitrogen gas pores in nitrogen alloying stainless steels[J].Materials Science and Engineering,2006,417A:307.
[11]马绍华,张志敏,储少军.用氮化铬、氮化锰冶炼高氮钢[J].钢铁研究学报,2008,20(12):10.
[12]刘继冰,郭军,季长涛,等.利用氮化铬铁合金生产高氮无镍奥氏体不锈钢的研究[J].铁合金,2010,41(1):26.
[13]Ridolfi M R,Tassa O.Formation of nitrogen bubbles during the solidification of 16-18%Cr high nitrogen austenitic stainless steels[J].Intermetallics,2003,11:1335.
[14]董廷亮,李光强.加压感应熔炼Fe-Cr-V系高氮钢及其铝脱氧[J].钢铁研究学报,2008,20(3):9.
[15]郎宇平,陈海涛,翁宇庆,等.热力学计算在高氮奥氏体不锈钢研究中的应用[J].材料工程,2013(5):16.
[16]Suutala N.Effect of manganese and nitrogen on the solidification mode in austenitic stainless steel welds[J].Metallurgical Transactions,1982,13A:2121.
[17]王延来,刘世程,刘德义,等.304奥氏体不锈钢固溶渗氮的研究[J].金属热处理,2005,30(5):8.
[2]Charles J.The new 200-series:an alternative answer to Ni surcharge dream or nightmare[J].Stainless Steel,2005(5):19.
[3]李花兵.高氮奥氏体不锈钢的冶炼理论基础及其材料性能研究[D].沈阳:东北大学,2008.
[4]崔大伟,曲选辉,李科.高氮低镍奥氏体不锈钢的研究进展[J].材料导报,2005,19(12):64.
[5]Simmons J W.Overview:high-nitrogen alloying of stainless steels[J].Materials Science and Engineering,1996,207A:159.
[6]Rawers J C,Dunning J S,Asai G,et al.Characterization of stainless steels melted under high nitrogen pressure[J].Metallurgical Transactions,1992,23A:1992.
[7]Feichtinger H,Stein G.Melting of high nitrogen steels[J].Materials Science Forum,1999,318(320):261.
[8]陆利明,李宏,壮云乾,等.氮气加压熔炼高氮钢若干理论问题探讨[J].钢铁研究学报,1996,8(1):6.
[9]高亦斌,陈根保,金卫强.AOD精炼高氮奥氏体不锈钢1Cr22Mn15N的工艺实践[J].特殊钢,2005,26(2):51.
[10]Yang Seong-Ho,Lee Zin-Hyoung.A method for predicting nitrogen gas pores in nitrogen alloying stainless steels[J].Materials Science and Engineering,2006,417A:307.
[11]马绍华,张志敏,储少军.用氮化铬、氮化锰冶炼高氮钢[J].钢铁研究学报,2008,20(12):10.
[12]刘继冰,郭军,季长涛,等.利用氮化铬铁合金生产高氮无镍奥氏体不锈钢的研究[J].铁合金,2010,41(1):26.
[13]Ridolfi M R,Tassa O.Formation of nitrogen bubbles during the solidification of 16-18%Cr high nitrogen austenitic stainless steels[J].Intermetallics,2003,11:1335.
[14]董廷亮,李光强.加压感应熔炼Fe-Cr-V系高氮钢及其铝脱氧[J].钢铁研究学报,2008,20(3):9.
[15]郎宇平,陈海涛,翁宇庆,等.热力学计算在高氮奥氏体不锈钢研究中的应用[J].材料工程,2013(5):16.
[16]Suutala N.Effect of manganese and nitrogen on the solidification mode in austenitic stainless steel welds[J].Metallurgical Transactions,1982,13A:2121.
[17]王延来,刘世程,刘德义,等.304奥氏体不锈钢固溶渗氮的研究[J].金属热处理,2005,30(5):8.