Knowledge of the appearance of texture components and fibres in pole figures, in inverse pole figures and in Euler space is fundamental for texture analysis. For cubic crystal systems, such as steels, an extensive literature exists and, for example, the book by Matthies, Vinel & Helming [Standard Distributions in Texture Analysis: Maps for the Case of Cubic Orthorhomic Symmetry, (1987), Akademie-Verlag Berlin] provides an atlas to identify texture components. For lower crystal symmetries, however, equivalent comprehensive overviews that can serve as guidance for the interpretation of experimental textures do not exist. This paper closes this gap by providing a set of scripts for theMTEXpackage [Bachmann, Hielscher & Schaeben (2010).Solid State Phenom.160, 63–68] that allow the texture practitioner to compile such an atlas for a given material system, thus aiding orientation distribution function analysis also for non-cubic systems.

Among various off-equilibrium microstructures of additively manufactured Ti-6Al-4V alloy, electron beam powder bed fusion, in which three dimensional metallic objects are fabricated by melting the ingredient powder materials layer by layer on a pre-heated bed, results in a specimen that is nearly free of the preferred orientation of the $\alpha$-Ti phase as well as a low beta phase fraction of ~1 wt%. However, when further heat treatment of up to 1050 °C was applied to the material in our previous study, a strong texture aligning the hexagonal basal plane of $\alpha$ phase with the build direction and about 6% $\beta$ phase appeared at room temperature. In this study, to understand the mechanism of this heat treatment, the grain level microstructure of the additively manufactured Ti-6Al-4V was investigated using in situ high temperature EBSD up to 1000 °C, which allows the tracking of individual grains during a heat cycle. As a result, we found a random texture originating from the fine grains in the initial material and observed a significant suppression of $\alpha$ phase nucleation in the slow cooling after heating to 950 °C within the $\alpha$ and $\beta$ dual phase regime but close to the the $\beta$-transus temperature at ~980 °C, which led to a coarse microstructure. Furthermore, the texture resulting from phase transformation of the additively manufactured Ti-6Al-4V assuming nucleation at the grain boundaries was modeled, using the double Burgers orientation relationship for the first time. The model successfully reproduced the measured texture, suggesting that the texture enhancement of the $\alpha$ phase by the additional heat treatment derives also from the variant selection during the phase transformation and nucleation on grain boundaries.

In this work, we investigate the magnetic structures of ${\left({\mathrm{Fe}}_{1-x}{\mathrm{Mn}}_x\right)}_2\mathrm{Al}{\mathrm{B}}_2$ solid-solution quaternaries in the $x=0$ to 1 range using x-ray and neutron diffraction, magnetization measurements, and mean-field theory calculations. While ${\mathrm{Fe}}_2\mathrm{Al}{\mathrm{B}}_2$ and ${\mathrm{Mn}}_2\mathrm{Al}{\mathrm{B}}_2$ are known to be ferromagnetic (FM) and antiferromagnetic (AFM), respectively, herein we focused on the magnetic structure of their solid solutions, which is not well understood. The FM ground state of ${\mathrm{Fe}}_2\mathrm{Al}{\mathrm{B}}_2$ becomes a canted AFM at $x\approx 0.2$, with a monotonically diminishing FM component until $x\approx 0.5$. The FM transition temperature ($T_{\mathrm{C}}$) decreases linearly with increasing $x$. These changes in magnetic moments and structures are reflected in anomalous expansions of the lattice parameters, indicating a magnetoelastic coupling. Lastly, the magnetocaloric properties of the solid solutions were explored. For $x=0.2$ the isothermal entropy change is smaller by 30% than it is for ${\mathrm{Fe}}_2\mathrm{Al}{\mathrm{B}}_2$, while the relative cooling power is larger by 6%, due to broadening of the temperature range of the transition.

We uncover a high-field magnetic phase in i -MAX compounds exhibiting a canted antiferromagnetic order with unprecedented properties, revealed through NMR and AC susceptibility. Intriguingly, as the atomic number of rare earth increases, the transition field of this canted antiferromagnetic phase grows at the expense of the lower-field antiferromagnetic state. Our findings point to the complexity of the magnetic structure in i -MAX compounds, demonstrating a nontrivial evolution of their phase diagram while increasing both the atomic number of the rare-earth element and the external field.

Zero and low field nuclear magnetic resonance measurements have been performed on MAX phase samples (Cr _{1− x} Mn _x ) ₂ AC with A = Ge and Ga in order to obtain local microscopic information on the nature of magnetism in this system. Our results unambiguously provide evidence for the existence of long-range magnetic order in (Cr _0.96 Mn _0.04 ) ₂ GeC and for (Cr _0.93 Mn _0.07 ) ₂ GaC, but not for (Cr _0.97 Mn _0.03 ) ₂ GaC. We point to a possible dependence of long range magnetic order in these MAX phase compounds on the A atom.

In this work, we present high-pressure diffraction results of the Mo-based M_{n + 1}AX_n phase, Mo₂GaC. A diamond anvil cell was used to compress the material up to 30 GPa, and x-ray diffraction was used to determine the structure and unit cell parameters as a function of pressure. Somewhat surprisingly, we find that, at 295 ± 25 GPa, the bulk modulus of Mo₂GaC is the highest reported of all the MAX phases measured to date. The c/a ratio increases with increasing pressure. At above 15 GPa, a splitting in the (1 0 0) reflection occurs. This result, coupled with new density functional theory calculations, suggests that a second order phase transition to possibly a mixture of hexagonal and monoclinic structures may explain this splitting. Such experimentally and theoretically supported phase transitions were not predicted in previously published calculations.