Characterization of three-dimensional grain structure in polycrystalline iron by serial sectioning

2004 ◽  
Vol 35 (7) ◽  
pp. 1927-1933 ◽  
Author(s):  
C. Zhang ◽  
M. Enomoto ◽  
A. Suzuki ◽  
T. Ishimaru
Keyword(s):  
Three Dimensional ◽  
Grain Structure ◽  
Serial Sectioning ◽  
Polycrystalline Iron

Three-dimensional microstructure characterization of loess based on a serial sectioning technique

2019 ◽  
Vol 261 ◽  
pp. 105265 ◽  
Author(s):  
Tingting Wei ◽  
Wen Fan ◽  
Ningyu Yu ◽  
Ya-ni Wei
Keyword(s):  
Three Dimensional ◽  
Microstructure Characterization ◽  
Serial Sectioning

Three-Dimensional Characterization of SiC Particle-Reinforced Al Composites Using Serial Sectioning Tomography and Thermo-mechanical Finite Element Simulation

2014 ◽  
Vol 45 (12) ◽  
pp. 5679-5690 ◽  
Author(s):  
Jai Myun Jung ◽  
Ji Hoon Yoo ◽  
Hyeok Jae Jeong ◽  
Sunghak Lee ◽  
Hyoung Seop Kim
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Three Dimensional ◽  
Serial Sectioning ◽  
Element Simulation ◽  
Sic Particle

Three-dimensional characterization of ODS ferritic steel using by FIB-SEM serial sectioning method

Microscopy ◽  
2014 ◽  
Vol 63 (suppl 1) ◽  
pp. i23.1-i23 ◽  
Author(s):  
T. Endo ◽  
Y. Sugino ◽  
N. Ohono ◽  
S. Ukai ◽  
N. Miyazaki ◽  
...  
Keyword(s):  
Ferritic Steel ◽  
Three Dimensional ◽  
Serial Sectioning ◽  
Sectioning Method

Reconstruction of three-dimensional grain structure in polycrystalline iron via an interactive segmentation method

2017 ◽  
Vol 24 (3) ◽  
pp. 257-263 ◽  
Author(s):  
Min-nan Feng ◽  
Yu-cong Wang ◽  
Hao Wang ◽  
Guo-quan Liu ◽  
Wei-hua Xue
Keyword(s):  
Three Dimensional ◽  
Grain Structure ◽  
Segmentation Method ◽  
Interactive Segmentation ◽  
Polycrystalline Iron

Characterization of the mineral phases of the iron ore pellet via 3D reconstruction using serial sectioning

2019 ◽  
Vol 116 (1) ◽  
pp. 117
Author(s):  
Wang Wei ◽  
Heng Zheng ◽  
Runsheng Xu ◽  
Fenglou Wu ◽  
Weilin Chen ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Iron Ore ◽  
Volume Fraction ◽  
Three Dimensional ◽  
Serial Sectioning ◽  
3D Space ◽  
Binding Phase ◽  
Large Particles ◽  
Iron Ore Pellet

A new analysis method based on serial sectioning and three-dimensional (3D) reconstruction was developed for the quantification of minerals in an iron ore pellet. The morphology and spatial distribution of the minerals in 3D space were analysed via 3D reconstructed images of an iron ore pellet. The volume fraction of the minerals in the 3D image was also calculated based on the pixel points. The results showed that the morphology and spatial distributions of hematite, magnetite and silicate varied among different pellets as well as among different positions within the same pellet. Thick plate and interconnected hematite was observed in the outer area of the pellets, whereas the inner area of the pellets mainly contained small granular and independent hematite. The hematite grains in pellet 1 were small, whereas those in pellet 2 were relatively dense. Some of the magnetite in pellet 1 was in the form of dense blocks, whereas fewer blocks were found in pellet 2, where magnetite occurred mainly in chain form scattered within the large particles of hematite. The silicate in pellet 2 was dense, granular and smaller than that in pellet 1. The quantitative analysis results for the two kinds of pellets showed that pellet 2 contained more hematite. Moreover, pellet 2 contained less unoxidized magnetite than pellet 1. These results indicate that the main bonding phase in pellet 1 was magnetite, whereas the main binding phase in pellet 2 was hematite. The greater compressive strength of pellet 2 was strongly related to higher amount of hematite interconnections.

Three Dimensional Characterization of Grain Structures by EBSP and 3DXRD

2007 ◽  
Vol 558-559 ◽  
pp. 751-756 ◽  
Author(s):  
Kristofer Hannesson ◽  
Dorte Juul Jensen
Keyword(s):  
Three Dimensional ◽  
Polycrystalline Materials ◽  
Serial Sectioning ◽  
X Ray Diffraction ◽  
X Ray ◽  
3D Structures ◽  
3 Dimensional ◽  
Grain Structures ◽  
Non Destructive

Grain structures in polycrystalline materials are typically three dimensional (3D) structures, but by far the most characterizations of grain structures are done by microscopy and are thus limited to 2D. In the present work 3D grain structures in a well-annealed cylindrical aluminium (AA1050) sample is characterized and analyzed. The characterization is done by 2 methods i) by non-destructive 3-dimensional x-ray diffraction (3DXRD) ii) by serial sectioning and subsequent EBSP mapping of entire circular 2D sample sections; 50 sections are mapped In total 333 grains are reconstructed. It is found that the 3D grain morphologies can be quite complex in particular for the larger grains, the number of neighbours varies significantly and values above 20 are not unusual. When the results from the 2 methods are compared, it is found that the crystallographic agreement is very good and within experimental uncertainties. Slightly more significant differences are found when the reconstructed grain morphologies are compared. Reasons for this are discussed.

Three-dimensional visualization and quantitative characterization of grains in polycrystalline iron

2014 ◽  
Vol 91 ◽  
pp. 65-75 ◽  
Author(s):  
Asad Ullah ◽  
Guoquan Liu ◽  
Junhua Luan ◽  
Wenwen Li ◽  
Mujeeb ur Rahman ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Quantitative Characterization ◽  
Polycrystalline Iron

Characterization of photosystem II with the atomic-force microscope

1992 ◽  
Vol 50 (2) ◽  
pp. 1146-1147
Author(s):  
Kathleen M. Marr ◽  
Mary K. Lyon
Keyword(s):  
Photosystem Ii ◽  
Atomic Force Microscope ◽  
Three Dimensional ◽  
Biologically Active ◽  
Atomic Force ◽  
Freeze Etching ◽  
Image Averaging ◽  
Oxygen Evolving ◽  
Averaging Techniques

Photosystem II (PSII) is different from all other reaction centers in that it splits water to evolve oxygen and hydrogen ions. This unique ability to evolve oxygen is partly due to three oxygen evolving polypeptides (OEPs) associated with the PSII complex. Freeze etching on grana derived insideout membranes revealed that the OEPs contribute to the observed tetrameric nature of the PSIl particle; when the OEPs are removed, a distinct dimer emerges. Thus, the surface of the PSII complex changes dramatically upon removal of these polypeptides. The atomic force microscope (AFM) is ideal for examining surface topography. The instrument provides a topographical view of individual PSII complexes, giving relatively high resolution three-dimensional information without image averaging techniques. In addition, the use of a fluid cell allows a biologically active sample to be maintained under fully hydrated and physiologically buffered conditions. The OEPs associated with PSII may be sequentially removed, thereby changing the surface of the complex by one polypeptide at a time.

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