BEARTEX: a Windows-based program system for quantitative texture analysis

Wenk, H. R.; Matthies, S.; Donovan, J.; Chateigner, D.

doi:10.1107/s002188989700811x

Cited by 300 publications

(172 citation statements)

References 7 publications

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“…Figure 7, for instance, presents inverse pole figures of the compression direction obtained for bcc and fcc iron at 12.5 GPa and 976 K and fcc and hcp iron at 33.2 GPa and 899 K. ODFs were obtained directly in MAUD and further smoothed with a 10°gauss filter in BEARTEX. 42 Upon compression, bcc iron develops a mixed ͕100͖ and ͕111͖ texture that is compatible with previous observations on bcc iron 16,43 and interpreted as slip along ͕110͖͗111͘. When bcc iron is heated between 295 and 976 K, we observe a recrystallization of the sample, as evident by the spotty pattern in Fig.…”

Section: Diffraction and Texture Development In Iron At High Presssupporting

confidence: 76%

Experimental method for in situ determination of material textures at simultaneous high pressure and high temperature by means of radial diffraction in the diamond anvil cell

Liermann

Merkel

Miyagi

et al. 2009

Review of Scientific Instruments

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We introduce the design and capabilities of a resistive heated diamond anvil cell that can be used for side diffraction at simultaneous high pressure and high temperature. The device can be used to study lattice-preferred orientations in polycrystalline samples up to temperatures of 1100 K and pressures of 36 GPa. Capabilities of the instrument are demonstrated with preliminary results on the development of textures in the bcc, fcc, and hcp polymorphs of iron during a nonhydrostatic compression experiment at simultaneous high pressure and high temperature.

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Section: Diffraction and Texture Development In Iron At High Presssupporting

confidence: 76%

Experimental method for in situ determination of material textures at simultaneous high pressure and high temperature by means of radial diffraction in the diamond anvil cell

Liermann

Merkel

Miyagi

et al. 2009

Review of Scientific Instruments

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“…Although we get incomplete pole figures from the Debye-Scherrer rings in a single two-dimensional diffraction image, it is possible to construct an orientation distribution function (ODF) for the B2 and the B19 phase from the combined information using several rings. To obtain the ODF with the method described by Wenk and Grigull [14] we used the WIMV [15] algorithm of the BEARTEX [16] …”

Section: Discussionmentioning

confidence: 99%

Hard X-ray studies of stress-induced phase transformations of superelastic NiTi shape memory alloys under uniaxial load

Hasan

Schmahl

Hackl

et al. 2008

Materials Science and Engineering: A

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We examined the texture evolution in a superelastic Ni 50.7 Ti 49.3 (numbers indicate at.%) alloy under applied uniaxial stress using high-energy synchrotron X-ray diffraction in transmission geometry. Texture information is identified from the intensity variations along Debye-Scherrer rings recorded on area detector diffraction images. The 1 1 0 A austenite plane normals are aligned in the rolling direction and 2 0 0 A is in the transverse direction. Due to the B2-B19 lattice correspondence, the 1 1 0 A peak splits into four martensite peaks 0 2 0 M ,1 1 1 M , 0 0 2 M and 1 1 1 M . The stress-induced martensite is strongly textured from twin variant selection in the stress field with 0 2 0 M aligned in the loading direction while the maxima corresponding to1 1 1 M , 0 0 2 M and 1 1 1 M are at 60 • , 67 • and 75 • from the loading direction. (B19 unit cell setting: a = 2.87Å, b = 4.59Å, c = 4.1Å, ␥ = 96.2 • ). A comparison between the experimental and recalculated distribution densities for the polycrystalline NiTi shows a reasonable agreement. In addition, we compare our experimental results with a micromechanical model which is based on total energy minimization. In this case, we also observe an overall agreement.

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“…At high tilt angles, reasonable defocusing corrections are not possible, therefore measurements were cut off at a tilt angle of 85°, leading to incomplete pole-figures. The orientation distribution function (ODF) values in three-dimensional orientation space were calculated by means of the WIMV algorithm (Matthies & Vinel 1982), included in the BEARTEX software package (Wenk et al 1998). From the results of the ODF, full pole-figures and pole-figures that cannot be directly measured, such as quartz (001)(c axis), were calculated.…”

Section: X-ray Texture Goniometrymentioning

confidence: 99%

Tertiary Pegmatite Dikes of the Central Alps

Guastoni¹,

Pennacchioni²,

Pozzi³

et al. 2014

Can Mineral

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbSTRACTThe largest field of Alpine Oligocene pegmatite dikes is in the Central Alps within the Southern Steep Belt (SSB) of the Alpine nappes; it extends for about 100 km in an E-W direction and 15 km in a N-S direction north of the Periadriatic Fault, from the Bergell pluton (to the east) to the Ossola valley (to the west). The pegmatite field geographically overlaps (1) the highest temperature domain of the Lepontine Barrovian metamorphic dome and (2) the zone of Alpine migmatization. We have studied pegmatites in two areas: (1) the Codera area on the western border of the Bergell pluton and (2) the Bodengo area between the Mera and the Mesolcina valleys. Most pegmatites show a simple mineral assemblage consisting of K-feldspar, quartz, and muscovite ± biotite, and only a minor percentage of the dikes (< 5%) contains Sn-Nb-Ta-Y-REE-U oxide, Y-REE phosphate, Mn-Fe-phosphate, Ti-Zr-silicate, Be-Y-REE-U-silicate and oxide minerals (beryl, chrysoberyl, bertrandite, bavenite, and milarite), garnet (almandine-spessartine), tourmaline (schorl to rare elbaite), bismuthinite, magnetite, and rarely dumortierite and helvite. The mineral assemblages, geological context, and chemical compositions allow the distinction between LCT (lithium, cesium, tantalum) and mixed LCT-NYF (niobium, yttrium, fluorine) pegmatites (with only one exception of an NYF dike in the Bodengo area). The LCT pegmatites of the Central Alps did not reach a high degree of geochemical evolution. The most fractionated pegmatites are found in the Codera area and contain Mn-rich elbaite, triplite, pink-beryl, and Cs-Rb-rich feldspar. In the Bodengo area pegmatites locally contain miarolitic cavities and the most evolved pegmatites correspond to the berylcolumbite-phosphate type. From a structural point of view two main types of pegmatites can be distinguished: (1) pegmatites that were involved in ductile deformation and (2) pegmatites that postdated the main ductile deformation of the SSB. Many pegmatites of the Codera valley belong to the first structural type: they were emplaced at relatively high ambient temperature (ca. 500 °C) and locally show a pervasive recrystallization of quartz and a mylonitic structure. The Codera dikes trend about 70° and are steeply dipping. In the Bodengo area the main set of pegmatites (trending approximately N-S to NNE-SSW) crosscuts the ductile deformation structures of the SSB, but the area also includes an earlier generation of boudinaged and folded pegmatite dikes. The undeformed ...

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BEARTEX: a Windows-based program system for quantitative texture analysis

Cited by 300 publications

References 7 publications

Experimental method for in situ determination of material textures at simultaneous high pressure and high temperature by means of radial diffraction in the diamond anvil cell

Experimental method for in situ determination of material textures at simultaneous high pressure and high temperature by means of radial diffraction in the diamond anvil cell

Hard X-ray studies of stress-induced phase transformations of superelastic NiTi shape memory alloys under uniaxial load

Tertiary Pegmatite Dikes of the Central Alps

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