Log in

Relevant bibliographies by topics / Crystallographic investigations / Journal articles

Journal articles on the topic 'Crystallographic investigations'

To see the other types of publications on this topic, follow the link: Crystallographic investigations.

Author: Grafiati

Published: 10 December 2022

Last updated: 6 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Crystallographic investigations.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Nordlund, Par, Anders Aberg, Ulla Uhlin, and Hans Eklund. "Crystallographic investigations of ribonucleotide reductase." Biochemical Society Transactions 21, no. 3 (August 1, 1993): 735–38. http://dx.doi.org/10.1042/bst0210735.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Strand, K., and W. Royer Jr. "Crystallographic investigations of erythrocruorin fromLumbricus terrestris." Acta Crystallographica Section A Foundations of Crystallography 52, a1 (August 8, 1996): C178. http://dx.doi.org/10.1107/s0108767396092185.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Storozhuk, Darina, Dirk Raiser, and Simone Techert. "High-resolution crystallographic investigations of organometallic compounds." Acta Crystallographica Section A Foundations and Advances 71, a1 (August 23, 2015): s487. http://dx.doi.org/10.1107/s2053273315092839.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Stura, E. A., D. L. Johnson, J. Inglese, J. M. Smith, S. J. Benkovic, and I. A. Wilson. "Preliminary crystallographic investigations of glycinamide ribonucleotide transformylase." Journal of Biological Chemistry 264, no. 16 (June 1989): 9703–6. http://dx.doi.org/10.1016/s0021-9258(18)60587-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

STALLINGS, WILLIAM, and GEORGE T. DETITTA. "Crystallographic Investigations of Biotin and Carboxybiotin Derivatives." Annals of the New York Academy of Sciences 447, no. 1 Biotin (June 1985): 152–68. http://dx.doi.org/10.1111/j.1749-6632.1985.tb18435.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Matar, S., M. Lelogeais, D. Michau, V. Ferris, and G. Demazeau. "Crystallographic and infra-red investigations of GaAso4polymorphs." High Pressure Research 7, no. 1-6 (December 15, 1991): 117–19. http://dx.doi.org/10.1080/08957959108245523.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Chipaux, R., D. Bonnisseau, M. Bogé, and J. Larroque. "Crystallographic and Mössbauer investigations on Np1−xPuxB2." Journal of Magnetism and Magnetic Materials 74, no. 1 (August 1988): 67–73. http://dx.doi.org/10.1016/0304-8853(88)90151-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Rajnikant, Dinesh, Kamni, M. B. Deshmukh, S. S. Jagpat, and S. R. Desai. "Crystallographic investigations of benzothiazol-2-yl-hydrazine." Journal of Chemical Crystallography 35, no. 4 (April 2005): 293–96. http://dx.doi.org/10.1007/s10870-005-1440-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Tagap, Tokuhei, Hiroshi Takeda, Hiroshi Mori, Junitirou Ichikawa, Ryoichi Tachibana, and Donard A. Morrison. "Crystallographic investigations of calcic plagioclase from the Bad Vermilion Lake Anorthosite Complex, Ontario." European Journal of Mineralogy 4, no. 2 (April 21, 1992): 299–306. http://dx.doi.org/10.1127/ejm/4/2/0299.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Moreno, Abel. "State-of-the Art Research in Biomolecular Crystals." Crystals 13, no. 1 (December 29, 2022): 58. http://dx.doi.org/10.3390/cryst13010058.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Srinivasan, Bikshandarkoil R., Sunder N. Dhuri, Ashish R. Naik, Christian Näther, and Wolfgang Bensch. "Crystallographic and thermal investigations of organic ammonium tetrathiomolybdates." Polyhedron 27, no. 1 (January 2008): 25–34. http://dx.doi.org/10.1016/j.poly.2007.08.023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Kadziola, A., S. Larsen, H. M. Christensen, J. J. Karlsson, and J. Ulstrup. "Crystallization and preliminary crystallographic investigations of cytochromec4fromPseudomonas stutzeri." Acta Crystallographica Section D Biological Crystallography 51, no. 6 (November 1, 1995): 1071–73. http://dx.doi.org/10.1107/s0907444995006652.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Neumann, K. U., H. Capellmann, and K. R. A. Ziebeck. "Crystallographic investigations and comparison of superconducting and nonsuperconducting CeCu2Si2." Zeitschrift f�r Physik B Condensed Matter 72, no. 2 (June 1988): 247–51. http://dx.doi.org/10.1007/bf01312141.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Höbler, H. J., and A. Zahn. "Crystallographic investigations of glaucochroite in an fe—mn slag." Crystal Research and Technology 23, no. 1 (January 1988): 107–9. http://dx.doi.org/10.1002/crat.2170230115.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Tümer, Yasemin, Nuran Asmafiliz, C. Tuğrul Zeyrek, Zeynel Kılıç, Leyla Açık, S. Pınar Çelik, Mustafa Türk, B. Çağdaş Tunalı, Hüseyin Ünver, and Tuncer Hökelek. "Syntheses, spectroscopic and crystallographic characterizations of cis- and trans-dispirocyclic ferrocenylphosphazenes: molecular dockings, cytotoxic and antimicrobial activities." New Journal of Chemistry 42, no. 3 (2018): 1740–56. http://dx.doi.org/10.1039/c7nj03643d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Bhattacharya, Kaushik. "Crystallographic Attributes of a Shape-Memory Alloy." Journal of Engineering Materials and Technology 121, no. 1 (January 1, 1999): 93–97. http://dx.doi.org/10.1115/1.2816005.

Full text

Abstract:

Shape-memory Alloys are attractive for many potential applications. In an attempt to provide ideas and guidelines for the development of new shape-memory alloys, this paper reports on a series of investigations that examine the reasons in the crystallography that make (i) shape-memory alloys special amongst martensites and (ii) Nickel-Titanium special among shape-memory alloys.

APA, Harvard, Vancouver, ISO, and other styles

17

Kaminskii, V. M., V. V. Netyaga, Z. D. Kovalyuk, V. B. Boledzyuk, V. I. Ivanov, and T. I. Bratanich. "Low-Impedance Investigations of Hydrogenated GaSe Layered Crystals." Фізика і хімія твердого тіла 16, no. 4 (December 15, 2015): 654–57. http://dx.doi.org/10.15330/pcss.16.4.654-657.

Full text

Abstract:

The structure, electrical and dielectric properties of hydrogenated gallium selenide crystals were investigated. It was shown that AC-conduction mechanism along the crystallographic axis C in the 103–105 Hz have hopping character. The parameters of the band theory of hopping conduction were calculated. The frequency dependence of ε' and ε'' components of permittivity in HxGaSe were obtained.

APA, Harvard, Vancouver, ISO, and other styles

18

Alkubaisi, Abdulla H., Homaid A. Al-madfa, W. Francis Deutsch, Michael B. Hursthouse, Harold G. Parkes, Leyl[acaron] S. Shaw, and Robert A. Shaw. "X-RAY CRYSTALLOGRAPHIC INVESTIGATIONS OF SOME SPIRO-DERIVATIVES OF CYCLOTRIPHOSPHAZATRIENE." Phosphorous and Sulfur and the Related Elements 28, no. 1-2 (July 1986): 277–88. http://dx.doi.org/10.1080/03086648608072818.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Bordo, Domenico, Rita Colnaghi, Daniela Deriu, Aristodemo Carpen, Paola Storici, Silvia Pagani, and Martino Bolognesi. "Crystallization and preliminary crystallographic investigations of rhodanese from Azotobacter vinelandii." Acta Crystallographica Section D Biological Crystallography 55, no. 8 (August 1, 1999): 1471–73. http://dx.doi.org/10.1107/s0907444999006526.

Full text

Abstract:

The rhdA gene identified in Azotobacter vinelandii codes for a protein, RhdA, which displays rhodanese (thiosulfate–cyanide sulfurtransferase) activity. RhdA was overexpressed and purified to homogeneity. The protein crystallized in the orthorhombic space group P21212 with unit-cell parameters a = 44.4, b = 150.8, c = 53.8 Å; on a synchrotron source the diffraction patterns could be collected to a resolution limit of 1.8 Å. Evaluation of the crystal density indicates that the crystal lattice accommodates one molecule per asymmetric unit and that the solvent content is 59% of the total volume.

APA, Harvard, Vancouver, ISO, and other styles

20

Jafar, M., S. Phapale, S. N. Achary, R. Mishra, and A. K. Tyagi. "High-temperature crystallographic and thermodynamic investigations on synthetic zirconolite (CaZrTi2O7)." Journal of Thermal Analysis and Calorimetry 131, no. 3 (November 11, 2017): 2709–18. http://dx.doi.org/10.1007/s10973-017-6816-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Waizumi, Kenji, Hideki Masuda, and Nobuhiro Fukushima. "CRYSTALLOGRAPHIC INVESTIGATIONS OF DIAQUATETRACHLORO-COBALT(II) AND NICKEL(II) COMPLEXES." Journal of Coordination Chemistry 38, no. 3 (May 1996): 199–206. http://dx.doi.org/10.1080/00958979608022705.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Junming, Lu, Lu Yunxiang, Yang Subin, and Zhu Weiliang. "Theoretical and crystallographic data investigations of noncovalent S···O interactions." Structural Chemistry 22, no. 4 (February 13, 2011): 757–63. http://dx.doi.org/10.1007/s11224-011-9751-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Jafar, Mohsin, Suhas B. Phapale, S. Nagabhusan Achary, Ratikanta Mishra, and Avesh K. Tyagi. "High temperature crystallographic and thermodynamic investigations on synthetic calzirtite (Ca2Zr5Ti2O16)." Journal of Alloys and Compounds 682 (October 2016): 284–93. http://dx.doi.org/10.1016/j.jallcom.2016.04.252.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Hädicke, E., A. Werner, and H. Hibst. "Correlation of Texture With Magnetic Properties of Thin Film Storage Media." Textures and Microstructures 11, no. 2-4 (January 1, 1989): 231–48. http://dx.doi.org/10.1155/tsm.11.231.

Full text

Abstract:

Thin coherent metal films of Co–Cr alloys on Si or glass substrates were used for high density magnetic storage media. They were made by sputtering or evaporation. Variation of the deposition parameters will change the micro structure especially the texture of the thin magnetic layers. We could relate the crystallographic data (rocking curves and pole figures) with the magnetic data (hysteresis loops). Correlations between deposition parameters and crystallographic and magnetic investigations will be discussed in detail.

APA, Harvard, Vancouver, ISO, and other styles

25

Görbitz, Carl Henrik. "The development and use of a crystallographic database." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 72, no. 2 (April 1, 2016): 167–68. http://dx.doi.org/10.1107/s2052520616005369.

Full text

Abstract:

To scientists working with small-molecule or organometallic compounds, the Cambridge Structural Database constitutes an extremely important tool for reference to individual crystal structures and as a data source for statistical investigations. The article by Groomet al.[(2016),Acta Cryst.B72, 171–179] provides updated information on the use, development and future of this database.

APA, Harvard, Vancouver, ISO, and other styles

26

Langer, Vratislav, Knut Lundquist, and Jim Parkås. "The stereochemistry and conformation of lignin as judged by X-ray crystallographic investigations of lignin model compounds: Arylglycerol beta-guaiacyl ethers." BioResources 2, no. 4 (October 16, 2007): 590–97. http://dx.doi.org/10.15376/biores.2.4.590-597.

Full text

Abstract:

The conformations of a variety of crystalline lignin models representing different diastereomeric forms of structural elements in lignin of the arylglycerol b-guaiacyl ether type have been studied using X-ray crystallography. Based on X-ray crystallographic data, sequences of units attached to each other by b-guaiacyl ether linkages were constructed. The appearance of the resulting oligomers shows that stereoisomerism can be expected to influence the shape of the lignin molecules to a great extent. The constructed oligomers provide an idea about the contribution to the complexity of lignins by stereochemistry alone. It is proposed that structural differences, together with conformational variations, are the main reasons for the broadness of the signals in NMR spectra of lignins.

APA, Harvard, Vancouver, ISO, and other styles

27

French, H. M., and W. H. Pollard. "Ground-ice investigations, Klondike District, Yukon Territory." Canadian Journal of Earth Sciences 23, no. 4 (April 1, 1986): 550–60. http://dx.doi.org/10.1139/e86-055.

Full text

Abstract:

Massive bodies of ground ice, 2.0–4.0 m thick, are regularly exposed in small placer mining operations in the Klondike District, Yukon. At Mayes claim, Hunker Creek, the ice is underlain by 2.0–3.0 m of creek gravels and overlain by 10.0–15.0 m of organic-rich and ice-rich muck deposits. The crystallographic and petrographic characteristics of the ice and its stratigraphic occurrence suggest that the ice body either had a segregation origin or was a residual snowbank subsequently buried by muck deposits and recrystallized.

APA, Harvard, Vancouver, ISO, and other styles

28

Orlov, Dmitry, Rimma Lapovok, László S. Tóth, Ilana B. Timokhina, Peter D. Hodgson, Debashish Bhattacharjee, and Arunansu Haldar. "Development of Asymmetric Rolling for the Better Control over Structure and Mechanical Properties in IF Steel." Materials Science Forum 706-709 (January 2012): 2788–93. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.2788.

Full text

Abstract:

In the present study, the effects of kinematic and geometric asymmetries in rolling during multi-pass processing of IF steel are examined. The theoretical investigation by final element simulations and experimental investigations by means of electron-backscatter diffraction analysis and tensile tests suggest that asymmetric rolling increases the total imposed strain compared to symmetric rolling, and largely re-distributes the strain components due to additional shear. This enhances the intensity of grain refinement, strengthens and tilts crystallographic orientations, and increases mechanical strength. The effect is highest in the asymmetric rolling with differential roll diameters.

APA, Harvard, Vancouver, ISO, and other styles

29

Miller, M. P., and D. L. McDowell. "The Effect of Stress-State on the Large Strain Inelastic Deformation Behavior of 304L Stainless Steel." Journal of Engineering Materials and Technology 118, no. 1 (January 1, 1996): 28–36. http://dx.doi.org/10.1115/1.2805930.

Full text

Abstract:

In metals, large strain inelastic deformation processes such as the formation of a preferred crystallographic orientation (crystallographic texture) and strain hardening processes such as the formation and evolution of dislocation substructures depend on stress-state. Much of the current large strain research has focused on texture. Crystallographic texture development and strainhardening processes each contribute to the overall material behavior, and a complete description of large strain inelastic material response should reflect both. An investigation of the large strain behavior of 304L stainless steel (SS 304L) subjected to compression, torsion, and sequences of compression followed by torsion and torsion followed by tension is reported. This paper focuses on the stress-state dependence of strain-hardening processes as well as the relative effect such processes have on the overall material behavior. To characterize these processes, transmission electron microscopy (TEM) as well as magnetization investigations were conducted at different strain levels and under different deformation modes. The γ → α′ martensitic transformation which occurs in this material was found to be related to both the strain level and stress state. Dislocation substructures in the form of Taylor lattices, dense dislocation walls, and microbands were also present. The ramifications of using a thin-walled tubular torsion specimen were also explored.

APA, Harvard, Vancouver, ISO, and other styles

30

Monschein, Stefan, Katharina S. Ragger, Josef Fasching, Dominik Zügner, and Ronald Schnitzer. "Microstructural, Chemical, and Crystallographic Investigations of Dynamic Strain-Induced Ferrite in a Microalloyed QT Steel." Metals 12, no. 2 (February 10, 2022): 313. http://dx.doi.org/10.3390/met12020313.

Full text

Abstract:

Dynamic strain-induced transformation (DSIT) enables the formation of fine-grained ferritic microstructures, which are well suited for cold forming processes in the as-rolled condition. In this work, the formation mechanism, chemical composition, and crystallographic orientation of DSIT ferrite were investigated in a micro-alloyed steel and compared to pre-eutectoid ferrite. High-resolution techniques, such as scanning transmission electron microscopy and atom probe tomography (APT), were used for the investigations. To generate DSIT ferrite and pre-eutectoid ferrite, different experimental routes were applied using a compression deformation dilatometer. The results show a large number of NbC precipitates within DSIT ferrite, and show that the formation of DSIT ferrite is accompanied with C diffusion and the formation of retained austenite. APT measurements revealed that the C- and Mn concentration in DSIT ferrite is higher compared to pre-eutectoid ferrite. The crystallographic orientation of DSIT ferrite was examined using electron backscatter diffraction. The crystallographic orientation of DSIT ferrite after the deformation route revealed that the <111> plane normals are parallel to the compression direction with the <110> directions pointing towards the radial direction of the compressed sample. The results suggest that the formation of DSIT ferrite is a displacive mechanism, accompanied by C diffusion.

APA, Harvard, Vancouver, ISO, and other styles

31

Vaudin, Mark D., Martin W. Rupich, Martha Jowett, G. N. Riley, and John F. Bingert. "A method for crystallographic texture investigations using standard x-ray equipment." Journal of Materials Research 13, no. 10 (October 1998): 2910–19. http://dx.doi.org/10.1557/jmr.1998.0398.

Full text

Abstract:

A fast and accurate method has been developed for measuring crystalline texture in homogeneous materials. The method uses a conventional powder x-ray diffractometer capable of θ scans. Two scans are recorded from the sample: first, a high resolution θ-2θ scan is obtained of a Bragg peak whose diffracting planes are normal to the preferred orientation direction; second, a θ scan is obtained using this peak. The η scan contains the required texture information, but the intensities must be corrected for defocusing and absorption to obtain the texture profile. The θ-2θ scan of the Bragg peak is used to make the defocusing correction, and first principles calculations are used to correct for absorption. The theory behind these corrections is presented here. The validity of the technique has been verified by making measurements on untextured alumina. Data obtained from Bi2Sr2Ca2Cu3O10 superconducting tape specimens with this technique are compared with texture data obtained with a four-circle diffractometer.

APA, Harvard, Vancouver, ISO, and other styles

32

Moshkov, K. A., M. M. Shavlovski, V. N. Zaitzev, and S. A. Neifakh. "PRELIMINARY X-RAY CRYSTALLOGRAPHIC AND PHYSICO-CHEMICAL INVESTIGATIONS OF HUMAN CERULOPLASMIN." International Journal of Peptide and Protein Research 9, no. 3 (January 12, 2009): 187–92. http://dx.doi.org/10.1111/j.1399-3011.1977.tb03480.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Li, Ming, Yi Yao, Jie Ding, Lu Liu, Jianhua Qin, Yaopeng Zhao, Hongwei Hou, and Yaoting Fan. "Spectroscopic and Crystallographic Investigations of Novel BODIPY-Derived Metal–Organic Frameworks." Inorganic Chemistry 54, no. 4 (January 14, 2015): 1346–53. http://dx.doi.org/10.1021/ic502219y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Palizdar, Meghdad, Chris M. Fancher, Dhiman Mallick, Tuhin Maity, Saibal Roy, Jacob L. Jones, Tim P. Comyn, Ender Suvaci, and Andrew J. Bell. "Crystallographic and magnetic investigations of textured bismuth ferrite lead titanate layers." Materials Research Express 5, no. 12 (September 25, 2018): 126103. http://dx.doi.org/10.1088/2053-1591/aae0a9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Deng, Zhihong, Peng Wu, Yapeng Cai, Yanheng Sui, Zhixin Chen, Hong Zhang, Binju Wang, and Haiping Xia. "Dioxygen Activation by Internally Aromatic Metallacycle: Crystallographic Structure and Mechanistic Investigations." iScience 23, no. 8 (August 2020): 101379. http://dx.doi.org/10.1016/j.isci.2020.101379.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Davies, Douglas R., and Wim G. J. Hol. "The power of vanadate in crystallographic investigations of phosphoryl transfer enzymes." FEBS Letters 577, no. 3 (October 21, 2004): 315–21. http://dx.doi.org/10.1016/j.febslet.2004.10.022.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Molitor, Christian, Aleksandar Bijelic, and Annette Rompel. "In situ formation of the first proteinogenically functionalized [TeW6O24O2(Glu)]7− structure reveals unprecedented chemical and geometrical features of the Anderson-type cluster." Chemical Communications 52, no. 83 (2016): 12286–89. http://dx.doi.org/10.1039/c6cc07004c.

Full text

Abstract:

Protein crystallographic investigations using the well-known Anderson-type polyoxometalate as crystallization additive led to the in situ formation of the unprecedented and proteinogenically functionalized [TeW₆O₂₄O₂(Glu)]⁷⁻ cluster.

APA, Harvard, Vancouver, ISO, and other styles

38

Podwórny, J., M. Staszewski, and Józef Wojsa. "Investigations into the phase composition of zirconia-based sinters with an axial texture." Journal of Applied Crystallography 50, no. 3 (April 27, 2017): 769–75. http://dx.doi.org/10.1107/s1600576717004575.

Full text

Abstract:

Owing to the phase transition of the tetragonal form of ZrO2into the monoclinic one, caused by mechanical stresses, preparation of powder samples for quantitative phase analysis by the X-ray diffraction method should be avoided. The process of grinding of zirconia sinters leads to considerable changes in their phase composition. For this reason, a quantitative phase analysis should be conducted on solid samples not subjected to mechanical stresses, irrespective of problems appearing during experiments and analysis. One such problem is preferred crystallographic orientation (texture). This paper describes the influence of a preferred crystallographic orientation on the quantitative phase analysis conducted on solid samples and presents the results of an analysis in which corrections for uniaxial and multiaxial textures were applied. It was found that the examined samples had a very weak but nonzero multiaxial texture. The share of the randomly oriented fraction in the examined sinters was determined to beca94 vol.% and the share of the textured fractionca6 vol.%. From the statistical point of view, in the case of small amounts of the textured fraction, a correction on one distinguished crystallographic plane can overcome this problem. In the case of the slightly textured sinters of metering nozzles subjected to investigation here, the correction related to all the unique directions was statistically insignificant because the textured part corresponds to only a small volume fraction. However, corrections related to all texture axes considerably improve the fit of the calculated X-ray pattern with the experimental one and help to better characterize the examined materials.

APA, Harvard, Vancouver, ISO, and other styles

39

Pędzich, Zbigniew, and Marek Faryna. "Fracture and Crystallographic Phase Correlation in Alumina Based Particulate Composites." Key Engineering Materials 290 (July 2005): 142–48. http://dx.doi.org/10.4028/www.scientific.net/kem.290.142.

Full text

Abstract:

The paper deals with the results of mechanical properties and microstructure investigations performed in two composite systems: Al2O3/WC and Al2O3/W. The fracture toughness measurements were made for materials characteristics. Microstructure of composites was thoroughly investigated using transmission and scanning electron microscopy. Selected Area Electron Dffractions (SAEDs) as well as Electron Backscatter Diffractions (EBSDs) were applied to establish crystallographic relationships between neighboring grains of different phases both in a local and global scale. Examples of orientation maps and stereographic projections for different crystallographic directions as well as orientation relationships between different phases (alumina and reinforcing inclusions) were shown and described.

APA, Harvard, Vancouver, ISO, and other styles

40

Harboe, Siri, Vijenthan Sothyratnam, Michael Modigell, and Annalisa Pola. "Experimental Investigations on the Formation of Rosettes during Shear." Solid State Phenomena 256 (September 2016): 199–204. http://dx.doi.org/10.4028/www.scientific.net/ssp.256.199.

Full text

Abstract:

In this work, the effect of stirring conditions on agglomeration and coalescence-coarsening in isothermal, globulitic, semisolid AlCu10%wt was investigated. It is shown that for the investigated system, a shear rate regime exists which promotes crystallographic alignment of the agglomerated grains, leading to a rapid coalescence process, thereby the formation of rosettes. It is also experimentally validated that for lower shear rates, the size and porosity of aggregates are increased compared to that at higher level of shear.

APA, Harvard, Vancouver, ISO, and other styles

41

Ferry, Michael, Wan Qiang Xu, M. Zakaria Quadir, Nasima Afrin Zinnia, Kevin J. Laws, Nora Mateescu, Lalu Robin, et al. "3D-EBSD Studies of Deformation, Recrystallization and Phase Transformations." Materials Science Forum 715-716 (April 2012): 41–50. http://dx.doi.org/10.4028/www.scientific.net/msf.715-716.41.

Full text

Abstract:

A focused ion beam (FIB) coupled with high resolution electron backscatter diffraction (EBSD) has emerged as a useful tool for generating crystallographic information in reasonably large volumes of microstructure. In principle, data generation is reasonably straightforward whereby the FIB is used as a high precision serial sectioning device for generating consecutive milled surfaces suitable for mapping by EBSD. The successive EBSD maps generated by serial sectioning are combined using various post-processing methods to generate crystallographic volumes of the microstructure. This paper provides an overview of the use of 3D-EBSD in the study of various phenomena associated with thermomechanical processing of both crystalline and semi-crystalline alloys and includes investigations on the crystallographic nature of microbands, void formation at particles, phase redistribution during plastic forming, and nucleation of recrystallization within various regions of the deformation microstructure.

APA, Harvard, Vancouver, ISO, and other styles

42

Grzegorczyk, Barbara, Wojciech Ozgowicz, and Elżbieta Kalinowska-Ozgowicz. "Influence of the Crystallographic Orientation of CuZn30 Single Crystal on the Portevin-Le Chatelier Effect." Solid State Phenomena 203-204 (June 2013): 406–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.203-204.406.

Full text

Abstract:

Plastic deformation of solid crystals is a complex process, mostly heterogeneous, due to the simultaneous effect of several deformation mechanisms. A dominating deformation mechanism depends on the properties of the material and external coefficients, viz. temperature, stress and strain rate. The applied Bridgman method permitted to obtain single crystal of the CuZn30 alloy adequate for plastic deformation investigations. Single crystal are characterized by selected crystallographic orientations from various areas of the basic triangle. In order to determine the influence of the crystallographic orientation on the Portevin-Le Chatelier effect selected single crystals were compressed at a temperature of 300°C at a strain rate of 10-3 s-1. Experiments confirmed the effect of the crystallographic orientation axis of CuZn30 single crystals on the observed differences in the intensity of stress oscillation on stress-strain curves.

APA, Harvard, Vancouver, ISO, and other styles

43

Baudron, Stéphane A., and Hubert Chevreau. "Revisiting Ag–π interactions with bis((pyrrol-2-yl)methylene)hydrazine: CC versus CN bond complexation." CrystEngComm 21, no. 12 (2019): 1853–56. http://dx.doi.org/10.1039/c9ce00168a.

Full text

Abstract:

Crystallographic and theoretical investigations of the assembly of bis((pyrrol-2-yl)methylene)hydrazine with Ag(i) salts suggest that, in the solid state, Ag–π interactions involve CC rather than CN pyrrolic bonds, in contrast with an earlier and unique report with this ligand.

APA, Harvard, Vancouver, ISO, and other styles

44

Raabe, Dierk, A. Al-Sawalmih, P. Romano, C. Sachs, Heinz Günter Brokmeier, Sang Bong Yi, G. Servos, and H. G. Hartwig. "Structure and Crystallographic Texture of Arthropod Bio-Composites." Materials Science Forum 495-497 (September 2005): 1665–74. http://dx.doi.org/10.4028/www.scientific.net/msf.495-497.1665.

Full text

Abstract:

In this study we present experimental investigations on the microscopic structure, constituent phases, and crystallographic textures of the exoskeleton of three types of decapod crustaceans, namely, lobster, crab, and horseshoe crab. The carapace of such animals is a biological multiphase nano-composite consisting of an organic matrix (crystalline chitin and non-crystalline proteins) and biominerals (calcite, phosphate). The synchrotron measurements of the crystalline chitin and of the biominerals which are embedded in the chitin-protein matrix (in case of lobster and crab) reveal strong textures. The horseshoe crab does not seem to contain notable amounts of crystalline minerals. The Debye-Scherrer images of the lobster specimen suggest that the biominerals form clusters of crystals with similar crystallographic orientation. TEM images support this suggestion. The crystallographic texture of the chitin is arranged with its longest cell axis parallel to the normal of the surface of the exoskeleton.

APA, Harvard, Vancouver, ISO, and other styles

45

Sokratov, Sergey, and Nikolai Kazakov. "Dry-snow metamorphism expressed by crystal shape." Annals of Glaciology 53, no. 61 (2012): 51–56. http://dx.doi.org/10.3189/2012aog61a029.

Full text

Abstract:

AbstractDry-snow metamorphism was the focus of extensive investigations in Russia over several decades. Large amounts of data were collected and used to construct a conceptual model based on crystallographic laws. The difference in terminology compared with the conventional model made these results less accessible to the wider international snow science community. This paper attempts to explain this terminology and its background so that the reported findings are not overlooked in ongoing investigations of the driving forces and consequences of snow metamorphism.

APA, Harvard, Vancouver, ISO, and other styles

46

Sen, Rupam, Abhishek Banerjee, Paula Brandão, and Zhi Lin. "Observation of Structural Diversity Based on the Cationic Influence in a Series of Zn/Cd Pyridine Carboxylate Coordination Compounds." Crystals 13, no. 2 (January 20, 2023): 186. http://dx.doi.org/10.3390/cryst13020186.

Full text

Abstract:

In this study, we used a 6-methyl-2,3-pyridine dicarboxylate ligand to develop the frameworks. Two novel compounds, [Zn2(L)2(H2O)4] (1) and [Cd(L)(H2O)] (2) (where L = 6-methyl-pyridine-2,3-dicarboxylate) were produced. The compounds were characterized by elemental analysis, powder X-ray diffraction, Fourier-transform infrared spectroscopy and single crystal X-ray crystallography. We successfully tuned the framework dimensionality by varying the size of the metal ions from small Zn to large Cd ions. Single crystal X-ray investigations of compound 1 show a good dimeric motif, while compound 2 shows a 2D network. In compound 1, the dimeric units are further bonded by strong hydrogen bonds and create a 3D network whereas compound 2 produces a 2D layer that in turn connects via short contacts to form a 3D network in the crystallographic space.

APA, Harvard, Vancouver, ISO, and other styles

47

Zaynullina, L. I., and I. V. Alexandrov. "Microstructure and crystallographic texture of Cu-Zn alloys subjected to ECAP and flat rolling." Journal of Physics: Conference Series 2094, no. 2 (November 1, 2021): 022039. http://dx.doi.org/10.1088/1742-6596/2094/2/022039.

Full text

Abstract:

Abstract This paper presents the results of the microstructure and crystallographic texture investigations of the Cu-Zn alloys system with different stacking fault energies (SFE) subjected to severe plastic deformation (SPD) by equal channel angular pressing (ECAP) and subsequent flat rolling. It is shown that ECAP leads to the formation of an ultrafine-grained (UFG) structure. Further flat rolling is accompanied by a decrease in the size of structural elements and the formation of nanoscale twins, which are more likely to be detected in an alloy with a lower SFE. As the deformation degree increases, the main crystallographic textures components of the investigated alloys become Brass and Goss components.

APA, Harvard, Vancouver, ISO, and other styles

48

Tamari, Rimon, Benjamin Grushko, and Louisa Meshi. "Electron Diffraction Study of the Space Group Variation in the Al–Mn–Pt T-Phase." Symmetry 14, no. 1 (December 29, 2021): 38. http://dx.doi.org/10.3390/sym14010038.

Full text

Abstract:

Binary high temperature “Al3Mn” (T-phase) and its extensions in ternary systems were the subjects of numerous crystallographic investigations. The results were ambiguous regarding the existence or lack of the center of symmetry: both Pna21 and Pnam space groups were reported. Our research on the Al–Mn–Pt T-phase allowed concluding that inside a continuous homogeneity region, the structure of the Al-rich T-phase (e.g., Al78Mn17.5Pt4.5) belongs to the non-centrosymmetric Pna21 space group, while the structure of the Al-poor T-phase (such as Al71.3Mn25.1Pt3.6) is centrosymmetric, i.e., Pnam. Following metallurgical and crystallographic considerations, the change in the symmetry was explained.

APA, Harvard, Vancouver, ISO, and other styles

49

Bielicki, T. A., and G. Thomas. "Microanalytical investigations of ordering in Y2O3-doped tetragonal zirconia polycrystals." Proceedings, annual meeting, Electron Microscopy Society of America 44 (August 1986): 502–3. http://dx.doi.org/10.1017/s0424820100144048.

Full text

Abstract:

The crystal structures of zirconia have been widely studied in relation to its transformation toughening and ionic conduction properties. The system of zirconia stabilised with Y2O3 is important in both applications. This investigation concerns the observation of unexpected crystallographic features in a fine-grained 2.3 mol% Y2O3 composition. This material is an example of the mechanically-outstanding “tetragonal zirconia polycrystals” (TZP) materials, in which virtually all of the ZrO2 is believed to be retained in the crucial tetragonal phase.

APA, Harvard, Vancouver, ISO, and other styles

50

Dewobroto, N., Nathalie Bozzolo, Pierre Barbéris, and Francis Wagner. "Experimental Investigations of Recrystallization Texture Development in Zirconium (Zr702)." Materials Science Forum 467-470 (October 2004): 453–58. http://dx.doi.org/10.4028/www.scientific.net/msf.467-470.453.

Full text

Abstract:

The microstructure and crystallographic texture in zirconium (Zr702) sheets, initially deformed by 80% cold rolling, are investigated at different stages of the primary recrystallization. Inhomogeneities were observed in the deformed microstructure at different scales down to the submicrometer range. The influence of these inhomogeneities on the local recrystallization mechanisms is discussed. The measurement of the orientation of the new grains shows that the nucleation is definitely not oriented. Since the global texture change is very slight, recrystallization by subgrain growth is probably one of the most important mechanism during the recrystallization process in zirconium.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!