【作者】 孙桂林； 宋波； 杨鹏鹏； 毛璟红； 辛文彬； 宋明明； 曹敏；

【Author】 Sun Guilin~(1,2),Song Bo~(1,2*),Yang Pengpeng~(1,2),Mao Jinghong~3,Xin Wenbin~(1,2),Song Mingming~(1,2),Cao Min~(1,2)(1. State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China; 2.School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;3.School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)

【机构】 北京科技大学钢铁冶金新技术国家重点实验室； 北京科技大学冶金与生态工程学院； 北京科技大学材料科学与工程学院；

【摘要】 利用带有能谱仪的扫描电镜分析研究了Fe-6%Sb和Fe-1.5%Sb两种不同成分合金在不同温度下锑的析出规律,以及合金中硫化物夹杂对锑析出的影响。结果如下:Fe-6%Sb合金1600℃水冷试样中含Sb相既能在晶内析出,也能沿晶界析出;1100、500℃水冷试样中Sb主要在晶界处富集偏析。Fe-1.5%Sb合金在1600、1100、600℃的水冷试样,Sb主要在晶界处富集偏析。二维错配度理论计算结果表明:MnS夹杂能成为含锑相理想的形核核心,实验结果与计算结果一致。更多还原

【Abstract】 The precipitation behavior of antimony-enriched phases at different temperatures in Fe-6%Sb and Fe-1.5%Sb alloys and the effect of sulphides inclusions on it were investigated in this study by SEM analysis.The results showed that in Fe-6%Sb alloys,antimony-enriched phase was found both inside grains and at grain boundaries in the water-cooled sample at 1600℃,antimony-enriched phase precipitated mostly at grain boundaries in the water-cooled samples both at 1100 and 500℃. For Fe-1.5%Sb alloys,antimony-enriched phase precipitated at grain boundaries after water-cooled at 1600,1100 and 600℃. The disregistry between the lattice parameters of the antimony particles and the inclusions was calculated.And the result showed that MnS inclusions could be the effective nucleation substrate of antimony precipitation in alloys.The experimental results were in accordance with the theoretical calculation results.更多还原