E-Mail Alert

Add your e-mail address to receive forthcoming issues of this journal:

Journal Browser

Journal Browser

Topical Collection "Textures and Anisotropy in Advanced Materials"

Editor

Guest Editor
Prof. Dr. Daniel Chateigner

Normandie Université, Caen, France
Website | E-Mail
Interests: crystallography; combined analysis; anisotropic properties; texture; materials

Topical Collection Information

Dear Colleagues,

The anisotropic properties of polycrystalline aggregates are strongly influenced by the preferred orientation (texture) of their constituting crystals. Beneficiation of such textures is conducted in order to optimize macroscopic properties in specific directions. A plethora of elaboration techniques have been developed for this optimization, resulting in various sample dimensionalities, from nanofibers and thin architectures to large bulks and composites. Initial mechanical forces used in rolling, casting, etc., developed to shape textured metallic alloys, today range in techniques using other orientation forces, such as electrical and magnetic fields, thermal gradients, spark plasmas, substrates, etc. All fields of materials science are concerned, such as shape memory alloys, semiconductors, superconductors, thermoelectrics, magnetics, ferroelectrics, polymers, ionic conductors, metals, etc. As a result, elaborated materials are of increasing architectural complexity, often composed of low crystal symmetry and multiphased, and Quantitative Texture Analysis (QTA) tools evolved for their characterization. Usual QTA, using X-ray, electron, and neutron scattering, progressively incorporated the characterization of residual stresses, crystal defects, and their variations in samples, giving rise to the new concept of Combined Analysis to take into account as many of the possible aspects of the actual material. Additionally, the representation and simulation of the resulting properties, using direct tensor homogenizations and first-principle calculations, holds an important place in the understanding of a material’s behavior.

In this Special Issue, we aim at reviewing recent aspects of texture application to advanced materials of all kinds, from anisotropic elaboration techniques to the resulting anisotropic properties, and via their scattering and spectroscopic characterization and simulation. New process developments, characterization techniques, simulations, and databases linked to anisotropy are targeted.

Prof. Dr. Daniel Chateigner
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the collection website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • texture analysis
  • tensor homogenization
  • tensor property
  • anisotropy
  • orientation distribution
  • DFT
  • spectroscopies
  • databases
  • modeling
  • 3D printing
  • shape memory alloys
  • magnetic texture
  • superconductors
  • semiconductors
  • thermoelectrics
  • ferroelectrics
  • piezoelectrics
  • batteries
  • polymers

Published Papers (3 papers)

2017

Open AccessArticle Multiscale Modeling of Polycrystalline NiTi Shape Memory Alloy under Various Plastic Deformation Conditions by Coupling Microstructure Evolution and Macroscopic Mechanical Response
Materials 2017, 10(10), 1172; doi:10.3390/ma10101172
Received: 19 September 2017 / Revised: 29 September 2017 / Accepted: 11 October 2017 / Published: 13 October 2017
PDF Full-text (4965 KB) | HTML Full-text | XML Full-text
Abstract
Numerical modeling of microstructure evolution in various regions during uniaxial compression and canning compression of NiTi shape memory alloy (SMA) are studied through combined macroscopic and microscopic finite element simulation in order to investigate plastic deformation of NiTi SMA at 400 °C. In
[...] Read more.
Numerical modeling of microstructure evolution in various regions during uniaxial compression and canning compression of NiTi shape memory alloy (SMA) are studied through combined macroscopic and microscopic finite element simulation in order to investigate plastic deformation of NiTi SMA at 400 °C. In this approach, the macroscale material behavior is modeled with a relatively coarse finite element mesh, and then the corresponding deformation history in some selected regions in this mesh is extracted by the sub-model technique of finite element code ABAQUS and subsequently used as boundary conditions for the microscale simulation by means of crystal plasticity finite element method (CPFEM). Simulation results show that NiTi SMA exhibits an inhomogeneous plastic deformation at the microscale. Moreover, regions that suffered canning compression sustain more homogeneous plastic deformation by comparison with the corresponding regions subjected to uniaxial compression. The mitigation of inhomogeneous plastic deformation contributes to reducing the statistically stored dislocation (SSD) density in polycrystalline aggregation and also to reducing the difference of stress level in various regions of deformed NiTi SMA sample, and therefore sustaining large plastic deformation in the canning compression process. Full article
Figures

Figure 1

Open AccessFeature PaperArticle Preferred Orientation Contribution to the Anisotropic Normal State Resistivity in Superconducting Melt-Cast Processed Bi2Sr2CaCu2O8+δ
Materials 2017, 10(5), 534; doi:10.3390/ma10050534
Received: 7 April 2017 / Revised: 6 May 2017 / Accepted: 12 May 2017 / Published: 15 May 2017
Cited by 1 | PDF Full-text (3553 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
We describe how the contribution of crystallographic texture to the anisotropy of the resistivity of polycrystalline samples can be estimated by averaging over crystallographic orientations through a geometric mean approach. The calculation takes into account the orientation distribution refined from neutron diffraction data
[...] Read more.
We describe how the contribution of crystallographic texture to the anisotropy of the resistivity of polycrystalline samples can be estimated by averaging over crystallographic orientations through a geometric mean approach. The calculation takes into account the orientation distribution refined from neutron diffraction data and literature values for the single crystal resistivity tensor. The example discussed here is a melt-cast processed Bi2Sr2CaCu2O8+δ (Bi-2212) polycrystalline tube in which the main texture component is a <010> fiber texture with relatively low texture strength. Experimentally-measured resistivities along the longitudinal, radial, and tangential directions of the Bi-2212 tube were compared to calculated values and found to be of the same order of magnitude. Calculations for this example and additional simulations for various texture strengths and single crystal resistivity anisotropies confirm that in the case of highly anisotropic phases such as Bi-2212, even low texture strengths have a significant effect on the anisotropy of the resistivity in polycrystalline samples. Full article
Figures

Open AccessFeature PaperReview Crystallographic Characterization on Polycrystalline Ni-Mn-Ga Alloys with Strong Preferred Orientation
Materials 2017, 10(5), 463; doi:10.3390/ma10050463
Received: 9 March 2017 / Revised: 13 April 2017 / Accepted: 25 April 2017 / Published: 27 April 2017
PDF Full-text (11709 KB) | HTML Full-text | XML Full-text
Abstract
Heusler type Ni-Mn-Ga ferromagnetic shape memory alloys can demonstrate excellent magnetic shape memory effect in single crystals. However, such effect in polycrystalline alloys is greatly weakened due to the random distribution of crystallographic orientation. Microstructure optimization and texture control are of great significance
[...] Read more.
Heusler type Ni-Mn-Ga ferromagnetic shape memory alloys can demonstrate excellent magnetic shape memory effect in single crystals. However, such effect in polycrystalline alloys is greatly weakened due to the random distribution of crystallographic orientation. Microstructure optimization and texture control are of great significance and challenge to improve the functional behaviors of polycrystalline alloys. In this paper, we summarize our recent progress on the microstructure control in polycrystalline Ni-Mn-Ga alloys in the form of bulk alloys, melt-spun ribbons and thin films, based on the detailed crystallographic characterizations through neutron diffraction, X-ray diffraction and electron backscatter diffraction. The presented results are expected to offer some guidelines for the microstructure modification and functional performance control of ferromagnetic shape memory alloys. Full article
Figures

Figure 1

Back to Top