Search results for: Markus Alfreider

Items from 1 to 5 out of 5 results

article

Fracture Toughness Investigations of an Ion‐Irradiated Nanocrystalline TiZrNbHfTa Refractory High‐Entropy Alloy

Michael Moschetti, Anton Hohenwarter, Markus Alfreider, Jean‐Philippe Couzinié, more

Advanced Engineering Materials > 26 > 19 > n/a - n/a

Refractory high‐entropy alloys (RHEAs) show potential for use in extreme environments, such as advanced nuclear reactors, owing to their high melting temperature, and often outstanding combinations of mechanical properties, corrosion resistance, and irradiation‐damage tolerance. This study evaluates the fracture toughness of a TiZrNbHfTa RHEA across different scales and microstructures, with a focus...

article

High‐Throughput Micromechanical Testing Enabled by Optimized Direct Laser Writing

Alexander Jelinek, Stanislav Zak, Markus Alfreider, Daniel Kiener

Advanced Engineering Materials > 25 > 7 > n/a - n/a

The cover shows a photomontage of 3D‐prints via two‐photon‐lithography. To the lower left, a model of an iconic building of Leoben is shown (base width: 1.1 mm). In the background and inset, optimized push‐to‐pull geometries incorporating double edge‐notched tension specimens (base width: 50 μm) for miniaturized fracture experiments are depicted. Details on are outlined by Alexander Jelinek and co‐workers...

article

High‐Throughput Micromechanical Testing Enabled by Optimized Direct Laser Writing

Alexander Jelinek, Stanislav Zak, Markus Alfreider, Daniel Kiener

Advanced Engineering Materials > 25 > 7 > n/a - n/a

Direct laser writing by two‐photon lithography enables the manufacturing of tailored 3D objects, commonly referred to as 3D‐printing, with submicrometer precision. Thereby, new approaches are enabled for miniaturized optical and mechanical devices, where basic material properties act as design guideline and initial input for finite element simulation‐driven device design. These mechanical properties...

article

Novel Approach for Assessing Cyclic Thermomechanical Behavior of Multilayered Structures

Benjamin Seligmann, Markus Alfreider, Michael Wurmshuber, Daniel Kiener

Advanced Engineering Materials > 25 > 3 > n/a - n/a

Microelectronic devices require material systems combining multiple layers of material for proper operation. These inevitably have different properties, for example, the elastic modulus or the coefficient of thermal expansion. Permanently reoccurring Joule heating and successive cooling during the operation of such devices lead to high thermal stresses within the materials and even failure due to...

article

In-situ TEM observation of {101¯2} twin-dominated deformation of Mg pillars: Twinning mechanism, size effects and rate dependency

Jiwon Jeong, Markus Alfreider, Ruth Konetschnik, Daniel Kiener, more

Acta Materialia > 2018 > 158 > C > 407-421

To investigate the mechanism of {101¯2} twinning in magnesium (Mg) single crystal and its influence on mechanical size effects and strain rate dependent deformation behavior, in-situ microcompression of Mg [21¯1¯0] pillars of various sizes from 0.5 μm to 4 μm was carried out in a scanning electron microscope (SEM) and also in a transmission electron microscope (TEM), covering strain rates from 10⁻⁴...

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Search results for: Markus Alfreider

Fracture Toughness Investigations of an Ion‐Irradiated Nanocrystalline TiZrNbHfTa Refractory High‐Entropy Alloy

High‐Throughput Micromechanical Testing Enabled by Optimized Direct Laser Writing

High‐Throughput Micromechanical Testing Enabled by Optimized Direct Laser Writing

Novel Approach for Assessing Cyclic Thermomechanical Behavior of Multilayered Structures

In-situ TEM observation of {101¯2} twin-dominated deformation of Mg pillars: Twinning mechanism, size effects and rate dependency

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