摘要
研究了不同N含量对Fe-21Cr-3Ni-1Mo-N双相不锈钢凝固组织的影响,发现N含量对两相比例的影响非常显著.通过热力学分析发现, N含量的增加有利于奥氏体析出、长大和奥氏体比例的增加.通过对数据拟合分析发现,当N含量为1.545%时, Fe-21Cr-3Ni-1Mo-N双相不锈钢两相比例为1∶1, N元素的奥氏体化作用是Ni的30倍.
The effects of nitrogen content on the microstructure of Fe-21Cr-3Ni-1Mo-N duplex stainless steel(DSS)are studied.Increase of nitrogen increases the austenite volume fraction,and the effect of N content on the phase ratio is significant.With thermodynamic analysis,it is found that increase of N content is conducive to precipitation and growth of austenite.By fitting the data,it is found that the phase ratio of Fe-21Cr-3Ni-1Mo-N duplex stainless steel is1∶1when the content of N is1.545%.
作者
危志强
陈湘茹
仲红刚
翟启杰
WEI Zhiqiang;CHEN Xiangru;ZHONG Honggang;ZHAI Qijie(School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;China Nerin Engineering Co., Ltd., Nanchang 330031, China)
出处
《上海大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第6期955-960,共6页
Journal of Shanghai University:Natural Science Edition
基金
国家自然科学基金资助项目(51404150
51227803
51504148)
关键词
双相不锈钢
N
两相比例
duplex stainless steel(DSS)
nitrogen
phase ratio
