Plagioclase twins in a basalt: an electron backscatter diffraction study

2016 ◽  
Vol 49 (6) ◽  
pp. 2145-2154 ◽  
Author(s):  
Chang Xu ◽  
Shan-Rong Zhao ◽  
Chuan Li ◽  
Xu He
Keyword(s):  
Alkali Basalt ◽  
Microprobe Analysis ◽  
Electron Backscatter Diffraction ◽  
Subsequent Transformation ◽  
Pole Figures ◽  
Growth History ◽  
Electron Backscatter ◽  
Crystallization Conditions ◽  
Backscatter Diffraction ◽  
The Relationship

Twins in plagioclase, which are abundant in rocks, have important implications for the growth history and subsequent transformation. There are many twin laws in plagioclase and some of them are difficult to identify. This paper presents an electron backscatter diffraction (EBSD) analysis combined with electron microprobe analysis of plagioclase twinning in the Niutoushan alkali basalt. Theoretical pole figures of 12 different twin laws for plagioclase were generated. By comparing the pole figures obtained from EBSD with the theoretical ones, 11 twin laws have been identified in the alkali basalt, and their frequency has also been determined: Albite (28%), Carlsbad (25%), Albite–Carlsbad (34%), Pericline (3%), Ala (2%), Manebach (1%), Albite–Ala (1%), Prism {110} (2%), Prism {1\bar 10} (1%), Prism {130} (1%) and Prism {1\bar 30} (1%). All the plagioclase twins in the alkali basalt are growth twins. The anorthite content of the plagioclase has a negative correlation with the frequency of the Pericline and Albite twin laws but a positive correlation with the frequency of all the other twin laws, which is consistent with previous results. The theoretical pole figures of twin laws for plagioclase introduced in this paper can be applied to investigating plagioclase twin laws in all plagioclase-bearing rocks, and the relationship between twin pattern and crystallization conditions of the rocks can be established.

Local Texture and Electromigration in Fine Line Microelectronic Aluminum Metallization

1994 ◽  
Vol 343 ◽  
Author(s):  
J. L. Hurd ◽  
K. P. Rodbell ◽  
D. B. Knorr ◽  
N. L. Koligman
Keyword(s):  
Electron Backscatter Diffraction ◽  
Fiber Texture ◽  
X Ray Diffraction ◽  
Aluminum Films ◽  
Pole Figures ◽  
Grain Orientations ◽  
Aluminum Metallization ◽  
Backscatter Diffraction ◽  
Relationship Of ◽  
The Relationship

ABSTRACTAluminum films 1 μm thick were deposited on oxidized silicon by sputtering and partially ionized beam evaporation to vary the crystallographic texture. These films were patterned into lines and subsequently annealed at 400 °C for 1 h. A strong correlation between the electromigration behavior and the blanket film texture (X-ray diffraction (XRD) / pole figures) has been reported previously for these films. In this work, an Electron Backscatter Diffraction (EBSD) a.k.a. Backscatter Kikuchi Diffraction (BKD) technique was employed using a scanning electron microscope (SEM) to interrogate individual grain orientations. BKD pole figures were acquired for lines ≥0.3 μm wide and for blanket (pad) regions. Identical, inverse pole figures were found for blanket films measured using both XRD and BKD (pads). Furthermore, the BKD (111) fiber texture shows a line width dependency, with narrow lines having a slightly improved texture over blanket (pad) regions. Local grain orientations were investigated near and within electromigration testing sites with characteristic void and hillock morphologies. The relationship of neighboring grain orientations to electromigration damage is shown.

Orientation Correlation during α→β Up-Transformation Induced by Electric Current Pulses in a Cu-Zn Alloy

2014 ◽  
Vol 783-786 ◽  
pp. 2406-2409
Author(s):  
Xiang Zhao ◽  
Xin Li Wang ◽  
Dong Xue Li ◽  
Wen Bin Dai
Keyword(s):  
Electric Current ◽  
Orientation Relationship ◽  
Electron Backscatter Diffraction ◽  
Current Pulses ◽  
Α Phase ◽  
Electric Current Pulses ◽  
Electron Backscatter ◽  
Backscatter Diffraction ◽  
The Relationship ◽  
Zn Alloy

In this work, the orientation of the β variants within a single parent α grain on the α→β up-transformation induced by electric current pulses in a Cu-Zn alloy was investigated. Electron backscatter diffraction (EBSD) was used to determine the relationship between the α phase and the β variants. By EBSD analysis, it was found that crystallographic variant selection was observed not only across those prior α/α grain boundaries, but also within the α grain interior. Results revealed that the orientation relationship between the α phase and the β associated with nucleation from α phase was close to the Kurdjumov-Sachs (K-S) orientation relationship, which better described the orientation relationship for α nucleation within β grains.

Electron backscatter diffraction study of twins and intergrowths among quartz crystals in granite

2013 ◽  
Vol 46 (5) ◽  
pp. 1414-1424 ◽  
Author(s):  
Shan-Rong Zhao ◽  
Hai-Jun Xu ◽  
Qin-Yan Wang ◽  
Kun-Guang Yang
Keyword(s):  
Crystallographic Orientation ◽  
Electron Backscatter Diffraction ◽  
Twin Plane ◽  
The Other ◽  
Mountain Area ◽  
Quartz Crystals ◽  
Dabie Mountain ◽  
Electron Backscatter ◽  
Backscatter Diffraction ◽  
The Relationship

Quartz has various types of twin law and twinned quartz is more common than untwinned quartz. However, it is difficult to determine the twin laws of quartz by optical or diffraction methods, so the distribution of the different twin laws of quartz in rocks is still unknown. This paper introduces a method to determine quartz twin laws using electron backscatter diffraction (EBSD). Based on this method, the relationships between quartz crystals in the granite of Tiantangzhai pluton, located at the centre of the Dabie Mountain area, China, are analysed. It is found that the Dauphiné twin is very abundant but the other twin laws (Japan, Esterel, Sardinian, Breithaupt and Cornish) are very rare in this granite. Besides twin laws, many kinds of intergrowths among the quartz crystals are also found. In the intergrowths the overlapping faces are {11\overline 22}, {10\overline 11}, {10\overline 12}, {11\overline 21} and {20\overline 21}, which are simply the twin planes of the Japan, Esterel, Sardinian, Breithaupt and Cornish twin laws, respectively. It is interesting that quartz crystals like to form intergrowths based on these faces but do not like to form twins with these faces as a twin plane. This research shows that the relationship between quartz crystals in the granite is controlled by the crystallographic orientation, resulting in the twins and intergrowths occurring at frequencies far exceeding random contact. It is also suggested that EBSD is the best method to determine the twin laws and intergrowths of quartz in a rock.

Relationship between Deformation and Recrystallization Texture in Copper Wire

2017 ◽  
Vol 907 ◽  
pp. 173-179
Author(s):  
Maria Zorina ◽  
Stepan Stepanov ◽  
Maxim Karabanalov ◽  
Mikhail Lobanov
Keyword(s):  
Electron Backscatter Diffraction ◽  
Copper Wire ◽  
Nucleation And Growth ◽  
Annealing Twins ◽  
Electron Backscatter ◽  
Lattice Boundary ◽  
Deformation Textures ◽  
Backscatter Diffraction ◽  
The Relationship ◽  
Fcc Metal

Using electron backscatter diffraction (EBSD), the relationship between deformation textures, developed upon different stress-strain states and characterized by the basic crystallographic orientations of recrystallized grains, has been studied in a FCC metal. The regularities of recrystallization twins development were considered. Crystallo-geometric relations between the deformation and the recrystallization orientations were explained with the mobility of the special grain boundary close to the coinciding site lattice boundary Σ25b. Mechanisms of nucleation and growth of the annealing twins were proposed.

Mesoscale twinning in shells of Pinctada martensii

2016 ◽  
Vol 231 (11) ◽  
Author(s):  
Jianhan He ◽  
Shanrong Zhao ◽  
Zhuliang Wei ◽  
Ulrich Bismayer
Keyword(s):  
Electron Backscatter Diffraction ◽  
Topological Analysis ◽  
Pinctada Martensii ◽  
Pole Figures ◽  
Electron Backscatter ◽  
Backscatter Diffraction

AbstractBiominerals have attracted multidiscipline interest (e.g. in material, medical and bio-geosciences) due to their unique organic–inorganic microtexture. In this work, electron backscatter diffraction (EBSD) and topological analysis of pole figures show that aragonite nacreous layers of

Cross Section Analysis of Cu Filled TSVs Based on High Throughput Plasma-FIB Milling

2012 ◽  
Author(s):  
Frank Altmann ◽  
Jens Beyersdorfer ◽  
Jan Schischka ◽  
Michael Krause ◽  
German Franz ◽  
...  
Keyword(s):  
High Resolution ◽  
Cross Section ◽  
High Throughput ◽  
Cross Sections ◽  
Electron Backscatter Diffraction ◽  
Grain Structure ◽  
Electron Backscatter ◽  
Section Surface ◽  
Backscatter Diffraction ◽  
Section Analysis

Abstract In this paper the new Vion™ Plasma-FIB system, developed by FEI, is evaluated for cross sectioning of Cu filled Through Silicon Via (TSV) interconnects. The aim of the study presented in this paper is to evaluate and optimise different Plasma-FIB (P-FIB) milling strategies in terms of performance and cross section surface quality. The sufficient preservation of microstructures within cross sections is crucial for subsequent Electron Backscatter Diffraction (EBSD) grain structure analyses and a high resolution interface characterisation by TEM.

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