利用聚焦离子束技术构建铁素体三维形态
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摘要
钢铁行业对铁素体的三维表征、组织演变、物理性能等越来越重视,现如今随着新型设备的引入,带动了研究方法的进步。通过聚焦离子束技术(FIB),构建了EH40级船板钢晶内铁素体、晶界铁素体的三维形态。结果表明,根据试验所得的晶内铁素体的三维形态,可知晶内铁素体是与其他铁素体发生碰撞而形成,并且有亚晶粒的存在。根据试验所得的晶界铁素体,其形态如针状,表面并不平滑,且由于碰撞,在其表面存在凹坑,并且建立了数学模型,展示出其三维形态可能是晶界表面处碳元素的快速扩散所导致的。
The steel industry and even the material science major pay more and more attention to the three-dimensional characterization,organizational evolution and physical properties of ferrite. With the introduction of new equipment,the research methods have been promoted. The three-dimensional morphology of intragranular ferrite and grain boundary ferrite in EH40 grade ship steel was constructed by focused ion beam technique(FIB),and the three-dimensional shape of intragranular ferrite and grain boundary ferrite in EH40 grade ship steel was constructed. The results showed that the three-dimensional morphology of intragranular ferrite obtained by the experiment was found to be formed by collision with other ferrites,and subgrain regulations existed. The grain boundary ferrite shaped like a needle with surface which was not smooth. And due to the collision,there were pits on the surface. A mathematical model was established which shown that its three-dimensional morphology may be caused by the rapid diffusion of C elements at the grain boundary surface.
The steel industry and even the material science major pay more and more attention to the three-dimensional characterization,organizational evolution and physical properties of ferrite. With the introduction of new equipment,the research methods have been promoted. The three-dimensional morphology of intragranular ferrite and grain boundary ferrite in EH40 grade ship steel was constructed by focused ion beam technique(FIB),and the three-dimensional shape of intragranular ferrite and grain boundary ferrite in EH40 grade ship steel was constructed. The results showed that the three-dimensional morphology of intragranular ferrite obtained by the experiment was found to be formed by collision with other ferrites,and subgrain regulations existed. The grain boundary ferrite shaped like a needle with surface which was not smooth. And due to the collision,there were pits on the surface. A mathematical model was established which shown that its three-dimensional morphology may be caused by the rapid diffusion of C elements at the grain boundary surface.
引文
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[14]Mingard K P,Jones H G,Gee M G.Metrological challenges for reconstruction of 3-D microstructures by focused ion beam tomography methods[J].Journal of Microscopy,2014,253(2):93.
[15]Fan G H,Zhang Y B,Driver J H,et al.Oriented growth during recrystallization revisited in three dimensions[J].Scripta Materialia,2014,72/73(2):9.
[16]王会珍,杨平,毛卫民.板条状马氏体形貌和惯习面的3D-EB-SD分析[J].材料工程,2013(4):74.(WANG Hui-zhen,YANGPing,MAO Wei-min.3D-EBSD analysis of lath martensite morphology and habitual surface[J].Materials Engineering,2013(4):74.)
[17]贾志宏,王雪丽,邢远.基于FIB的三维表征分析技术及应用前景[J].中国材料进展,2013,32(12):736.(JIA Zhi-hong,WANG Xue-li,XING Yuan.Three-dimensional characterization analysis technology based on FIB and its application prospects[J].Chinese Material Progress,2013,32(12):736.)
[18]CHENG L,WU K M.New insights into intragranular ferrite in a low-carbon low-alloy steel[J].Acta Materialia,2009,57(13):3754.
[19]CHENG L,WAN X L,WU K M.Three-dimensional morphology of grain boundary Widmanst?tten ferrite in a low carbon low alloy steel[J].Materials Characterization,2010,61(2):192.
[2]Hutter R V P,Foote F W,Francis K C,et al.The mechanism of phase transformations in metals[J].Institute of Metals,1966,19(1):1.
[3]吴开明.钢铁材料中铁素体的三维形态与分析[J].中国体视学与图像分析,2017(2):119.(WU Kai-ming.Three-dimensional shape and analysis of ferrite in steel materials[J].Chinese Stereology and Image Analysis,2017(2):119.)
[4]Xhoffer Chris,Dhont Annick,Willems Annick.聚焦离子束在金属研究中的应用[J].冶金分析,2012,32(7):7.(Xhoffer Chris,Dhont Annick,Willems Annick.The use of focused ion beam in metal research[J].Metallurgical Analysis,2012,32(7):7.)
[5]Xhoffer Chris,Dhont Annick,Willems Annick.The use of focused ion beam in metal research[J].Metallurgical Analysis,2012,32(7):7.)
[6]Inkon B J,Mulvihill M,Mobus G.3D determination of grain shape in a FeAl-based Nanocomposite by 3D FIB tomography[J].Scripta Materialia,2001,45(7):753.
[7]Villinger C,Gregorius H,Kranz C,et al.FIB/SEM tomography with TEM-like resolution for 3D imaging of high-pressure frozen cell[J].Histochemistry and Cell Biology,2012,138:549.
[8]Uchic M D,Groeber M A,Dimiduk D M,et al.3D micro structural characterization of nickel superalloys via serial-sectioning using a dual beam FIB-SEM[J].Scripta Materialia,2006,55(1):23.
[9]Ritter M,Midgley P A.A practical approach to test the scope of FIB-SEM 3D reconstruction[J].Journal of Physics:Conference Series,2010,241(1):1.
[10]Nagasekhar A V,Caeres A H,Kong C.3D characterization of intermetallics in a high pressure die cast Mg alloy using focused ion beam tomography[J].Materials Characterization,2010,61(11):1035.
[11]Cao S,Tirry W,Van Den Broek W,et al.Optimization of a FIB/SEM slice-and-view study of the 3D distribution of Ni4Ti3 precipitates in Ni-Ti[J].Journal of Microscopy,2009(1):61.
[12]Zankel A,Wagner J.Poelt Peter.Serial sectioning methods for3D investigations in materials science[J].Micron,2014,62:66.
[13]Groeber M A,Haley B K,Uchic M D.3D reconstruction and characterization of polycrystalline microstructures using a FIB-SEM system[J].Materials Characterization,2006,57(4):259.
[14]Mingard K P,Jones H G,Gee M G.Metrological challenges for reconstruction of 3-D microstructures by focused ion beam tomography methods[J].Journal of Microscopy,2014,253(2):93.
[15]Fan G H,Zhang Y B,Driver J H,et al.Oriented growth during recrystallization revisited in three dimensions[J].Scripta Materialia,2014,72/73(2):9.
[16]王会珍,杨平,毛卫民.板条状马氏体形貌和惯习面的3D-EB-SD分析[J].材料工程,2013(4):74.(WANG Hui-zhen,YANGPing,MAO Wei-min.3D-EBSD analysis of lath martensite morphology and habitual surface[J].Materials Engineering,2013(4):74.)
[17]贾志宏,王雪丽,邢远.基于FIB的三维表征分析技术及应用前景[J].中国材料进展,2013,32(12):736.(JIA Zhi-hong,WANG Xue-li,XING Yuan.Three-dimensional characterization analysis technology based on FIB and its application prospects[J].Chinese Material Progress,2013,32(12):736.)
[18]CHENG L,WU K M.New insights into intragranular ferrite in a low-carbon low-alloy steel[J].Acta Materialia,2009,57(13):3754.
[19]CHENG L,WAN X L,WU K M.Three-dimensional morphology of grain boundary Widmanst?tten ferrite in a low carbon low alloy steel[J].Materials Characterization,2010,61(2):192.