Search Results - "Österreicher, Johannes A."

Characterization of Zr-Containing Dispersoids in Al-Zn-Mg-Cu Alloys by Small-Angle Scattering by Honaramooz, Mohammad Taha, Morak, Roland, Pogatscher, Stefan, Fritz-Popovski, Gerhard, Kremmer, Thomas M, Meisel, Thomas C, Österreicher, Johannes A, Arnoldt, Aurel, Paris, Oskar

“…The characterization of Zr-containing dispersoids in aluminum alloys is challenging due to their broad size distribution, low volume fraction, and…”
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Characterisation and Comparison of Process Chains for Producing Automotive Structural Parts from 7xxx Aluminium Sheets by Schuster, Philipp, Österreicher, Johannes, Kirov, Georg, Sommitsch, Christof, Kessler, Olaf, Mukeli, Ermal

“…Due to their high specific strength, EN AW-7xxx aluminium alloys are promising materials for reducing the weight of automotive structural parts. However, their…”
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Measurement of coherent surface acoustic wave attenuation in polycrystalline aluminum by Ryzy, Martin, Grabec, Tomáš, Österreicher, Johannes A., Hettich, Mike, Veres, István A.

“…Attenuation of Rayleigh-type surface acoustic waves induced by grain-boundary scattering is studied experimentally and theoretically by an effective medium…”
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Spatial lithium quantification by backscattered electron microscopy coupled with energy-dispersive X-ray spectroscopy by Österreicher, Johannes A, Simson, Clemens, Großalber, Alexander, Frank, Simon, Gneiger, Stefan

“…The quantification of lithium in electron microscopes by energy-dispersive X-ray spectroscopy (EDS) is highly challenging due to the low energy of the…”
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Warm-forming of pre-aged Al-Zn-Mg-Cu alloy sheet by Österreicher, Johannes A., Tunes, Matheus A., Grabner, Florian, Arnoldt, Aurel, Kremmer, Thomas, Pogatscher, Stefan, Schlögl, Carina M.

“…Aluminium alloys of the 7xxx series are attracting the attention of automakers due to their high specific strength. However, widespread use of 7xxx series…”
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Stabilization of 7xxx aluminium alloys by Österreicher, Johannes A., Kirov, Georg, Gerstl, Stephan S.A., Mukeli, Ermal, Grabner, Florian, Kumar, Manoj

“…High strength Al-Zn-Mg(-Cu) alloys are rarely used in the automotive industry due to pronounced natural ageing after quenching and resulting poor formability…”
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Differential scanning calorimetry of age-hardenable aluminium alloys: effects of sample preparation, experimental conditions, and baseline correction by Arnoldt, Aurel R., Grohmann, Lukas, Strommer, Stephan, Österreicher, Johannes A.

“…Precipitation processes in age hardenable aluminium alloys are often investigated by differential scanning calorimetry (DSC). The endothermic and exothermic…”
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Simultaneous laser ultrasonic measurement of sound velocities and thickness of plates using combined mode local acoustic spectroscopy by Watzl, Georg, Ryzy, Martin, Österreicher, Johannes A., Arnoldt, Aurel R., Yan, Guqi, Scherleitner, Edgar, Schagerl, Martin, Grünsteidl, Clemens

“…Standard ultrasonic thickness measurements require the sound velocity of the sample to be known and vice versa. We present a method, which we have termed…”
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Combined cyclic deformation and artificial ageing of an Al-Mg-Si alloy by Österreicher, Johannes A.

“…•Cyclic deformation during artificial ageing drastically increases ageing kinetics.•Ageing time can be reduced by nearly an order of magnitude.•Lattice defects…”
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Optimizing the Zn and Mg contents of Al–Zn–Mg wrought alloys for high strength and industrial-scale extrudability by Arnoldt, Aurel, Österreicher, Johannes A., Schiffl, Andreas, Höppel, Heinz Werner

“…High-strength Al alloys of the 7xxx series are promising candidates for further light-weighting of car bodies. However, they are difficult to process by…”
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In situ conductometry for studying the homogenization of Al-Mg-Si alloys and predicting extrudate grain structure through machine learning by Österreicher, Johannes A., Živanović, Dragan, Walenta, Wolfram, Maimone, Stefan, Hofbauer, Manuel, Hovden, Sindre, Tükör, Zuzana, Arnoldt, Aurel, Cerny, Angelika, Kronsteiner, Johannes, Antić, Miloš, Zickler, Gregor A., Ehmeier, Florian, Mikulović, Milomir, Kunschert, Georg

“…In industrial practice, no sensors capable of obtaining microstructural information in situ during thermo-mechanical processing of Al alloys are commonly…”
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Dissimilar friction stir welding and post-weld heat treatment of Ti-6Al-4V and AA7075 producing joints of unprecedented strength by Österreicher, Johannes A., Pfeiffer, Christian, Kunschert, Georg, Weinberger, Thomas, Schlögl, Carina M., Suppan, Werner, Radlmayr, Karl M.

“…Dissimilar welding of Ti and Al alloys is challenging due to the potential formation of brittle intermetallics, which can compromise weld strength. Friction…”
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Two step–ageing of 7xxx series alloys with an intermediate warm-forming step by Österreicher, Johannes A., Grabner, Florian, Tunes, Matheus A., Coradini, Diego S.R., Pogatscher, Stefan, Schlögl, Carina M.

“…Two-step ageing of 7xxx series alloys can reduce ageing time while obtaining similar mechanical properties as a longer isothermal heat treatment. In this…”
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A systematic through-process rolling and extrusion study of four experimental high-strength Al-Mg-Si alloys by Österreicher, Johannes A., Cerny, Angelika, Arnoldt, Aurel R., Nietsch, Jürgen A., Simson, Clemens, Gneiger, Stefan, Zickler, Gregor A., Schlögl, Carina M., Kunschert, Georg

“…Al-Mg-Si alloys are an important class of Al wrought alloys. Further increasing their strength has significant economic potential. Previous approaches were…”
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Mechanisms of electrically assisted deformation of an Al–Mg alloy (AA5083-H111): Portevin–Le Chatelier phenotype transformation, suppression, and prolonged necking by Cerny, Angelika, Grabner, Florian, Arnoldt, Aurel R., Kunschert, Georg, Mayr, Johann, Zickler, Gregor A., Österreicher, Johannes A.

“…Aluminum-magnesium wrought alloys are well known for their advantageous properties and their application in various industries. However, the occurrence of the…”
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Analysis of second phase particles in metals using deep learning: Segmentation of nanoscale dispersoids in 6xxx series aluminum alloys (Al-Mg-Si) by Arnoldt, Aurel, Semmelrock, Lukas, Soukup, Daniel, Österreicher, Johannes A.

“…During the homogenization heat treatment of 6xxx series aluminum alloys, nanoscale precipitates—commonly named dispersoids—are formed that influence material…”
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Development of a High Strength Magnesium Alloy for Wire Arc Additive Manufacturing by Gneiger, Stefan, Österreicher, Johannes A., Arnoldt, Aurel R., Birgmann, Alois, Fehlbier, Martin

“…Due to their high specific strength, magnesium alloys are promising materials for further lightweighting in mobility applications. In contrast to casting and…”
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Cryogenic Forming of Al‐Mg Alloy Sheet for Car Outer Body Applications by Grabner, Florian, Österreicher, Johannes A., Gruber, Belinda, Papenberg, Nikolaus, Gerstner, Florian, Kirnstötter, Stefan, Schlögl, Carina M.

“…During deep‐drawing of Al‐Mg sheet at room temperature, stretcher‐strain marks can appear on the material's surface. Such parts are not suitable for car outer…”
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In situ laser-ultrasonic monitoring of elastic parameters during natural aging in an Al-Zn-Mg-Cu alloy (AA7075) sheet by Watzl, Georg, Grünsteidl, Clemens, Arnoldt, Aurel, Nietsch, Jürgen A., Österreicher, Johannes A.

“…[Display omitted] Solution heat treatment increases the formability of 7xxx series aluminum alloys by dissolution of nanoscale hardening phases. However,…”
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Information depth in backscattered electron microscopy of nanoparticles within a solid matrix by Österreicher, Johannes A., Grabner, Florian, Schiffl, Andreas, Schwarz, Sabine, Bourret, Gilles R.

“…Measuring the dimensions and number density of nanoparticles dispersed in a solid matrix is usually accomplished via transmission electron microscopy (TEM)…”
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