154 citations · 594 across the 26 of their papers we have counts for
24 papers · 1 filter
Synthesis of hard magnetic α-MnBi phase by high pressure torsion and field assisted annealing
Lukas Weissitsch, Stefan Wurster, Martin Stueckler +4
Bulk composites using powder blends of Mn and Bi with equal atomic ratios are consolidated and severely deformed by high-pressure torsion (HPT). Subsequent annealing treatments lea…
Deformation-induced homogenization of the multi-phase senary high-entropy alloy MoNbTaTiVZr processed by high-pressure torsion
Chuyi Duan, Aleksander Kostka, Xiaohu Li +4
Dendritic microstructures are frequently observed in as-solidified refractory high-entropy alloys (RHEAs), and their homogenization typically requires a long-term heat treatment at…
Magnetoresistive behaviour of ternary Cu-based materials processed by high-pressure torsion
M. Kasalo, S. Wurster, M. Stückler +4
Severe plastic deformation using high-pressure torsion of ternary Cu-based materials (CuFeCo and CuFeNi) was used to fabricate bulk samples with a nanocrystalline microstructure. T…
Manufacturing of Textured Bulk Fe-SmCo Magnets by Severe Plastic Deformation
Lukas Weissitsch, Martin Stückler, Stefan Wurster +5
Exchange-coupling between soft- and hard-magnetic phases plays an important role in the engineering of novel magnetic materials. To achieve exchange coupling, a two-phase microstru…
Oxide-stabilized microstructure of severe plastically deformed CuCo alloys
Martin Stueckler, Jakub Zalesak, Timo Mueller +7
Nanocrystalline materials are well known for their beneficial mechanical and physical properties. However, it is of utmost importance to stabilize the microstructure at elevated te…
Soft Magnetic Properties of Ultra-Strong and Nanocrystalline Pearlitic Wires
Stefan Wurster, Martin Stückler, Lukas Weissitsch +4
The paper describes the capability of magnetic softening of a coarse grained bulk material by a severe deformation technique. Connecting the microstructure with magnetic properties…
Nanocrystalline FeCr alloys synthesised by severe plastic deformation -- a potential material for exchange bias and enhanced magnetostriction
Lukas Weissitsch, Stefan Wurster, Alexander Paulischin +3
This work gives insights into processing and characterisation of bulk nanocrystalline FeCr materials. The investigated FeCr alloys, consisting of 30, 50 and 70 at.% ferromagnetic F…
Sampling the Cu-Fe-Co phase diagram by severe plastic deformation for enhanced soft magnetic properties
Martin Stückler, Stefan Wurster, Lukas Weissitsch +3
Initial powder mixtures of Cu, Fe and Co are exposed to severe plastic deformation by high-pressure torsion to prepare solid solutions. A broad range of compositions is investigate…
Spinodal decomposition stabilizes plastic flow in a nanocrystalline Cu-Ti alloy
Julian M. Rosalie, Oliver Renk, Reinhard Pippan
A combination of high strength and reasonable ductility has been achieved in a copper-1.7 at.%titanium alloy deformed by high-pressure torsion. Grain refinement and a spinodal micr…
On the magnetic nanostructure of a Co-Cu alloy processed by high-pressure torsion
Martin Stückler, Christian Teichert, Aleksandar Matković +5
In this study, a preparation route of Co-Cu alloys with soft magnetic properties by high-pressure torsion deformation is introduced. Nanocrystalline, supersaturated single-phase mi…
Strain Induced Anisotropic Magnetic Behaviour and Exchange Coupling Effect in Fe-SmCo Permanent Magnets Generated by High Pressure Torsion
Lukas Weissitsch, Martin Stückler, Stefan Wurster +4
High-pressure torsion (HPT), a technique of severe plastic deformation (SPD), is shown as a promising processing method for exchange-spring magnetic materials in bulk form. Powder…
In situ AC-hysteresis measurements of SPD-processed Cu20(Fe15Co85)80
Martin Stückler, Stefan Wurster, Reinhard Pippan +1
The changes of magnetic properties upon heat treatment of a metastable supersaturated solid solution processed by severe plastic deformation are investigated by in-situ AC-hysteres…
Effect of Carbon in Severe Plastically Deformed Metals
Andrea Bachmaier, Reinhard Pippan, Oliver Renk
In the last decades severe plastic deformation techniques have gained increasing interest as they allow the production of bulk nanostructured materials with superior mechanical and…
Influence of Processing Parameters on the Mechanical Properties of HPT-Deformed Nickel Carbon Nanotube Composites
Andreas Katzensteiner, Timo Mueller, Karoline Kormout +4
Nickel carbon nanotube composites with varying amounts of carbon nanotubes are deformed by high pressure torsion at different deformation temperatures to high strains, where no fur…
High-Pressure Torsion Deformation Induced Phase Transformations and Formations: New Material Combinations and Advanced Properties
Andrea Bachmaier, Reinhard Pippan
Heavy plastic shear deformation at relatively low homologous temperatures is called high-pressure torsion (HPT) deformation, which is one method of severe plastic deformation (SPD)…
Intermixing of Fe and Cu on the atomic scale by high-pressure torsion as revealed by DC- and AC-SQUID susceptometry and atom probe tomography
Martin Stückler, Heinz Krenn, Philipp Kürnsteiner +6
The capability of high-pressure torsion on the preparation of supersaturated solid solutions, consisting of Cu-14Fe (wt.%), is studied. From microstructural investigations a steady…
Tuneable Magneto-Resistance by Severe Plastic Deformation
Stefan Wurster, Lukas Weissitsch, Martin Stueckler +4
Bulk metallic samples were synthesized from different binary powder mixtures consisting of elemental Cu, Co, and Fe using severe plastic deformation. Small particles of the ferroma…
Magnetic Binary Supersaturated Solid Solutions Processed by Severe Plastic Deformation
Martin Stückler, Heinz Krenn, Reinhard Pippan +3
Samples consisting of one ferromagnetic and one diamagnetic component which are immiscible at the thermodynamic equilibrium (Co-Cu, Fe-Cu, Fe-Ag) are processed by high-pressure tor…
Magnetic dilution by severe plastic deformation
Martin Stückler, Lukas Weissitsch, Stefan Wurster +4
Mixtures of Fe and Cu powders are cold-compacted and subsequently deformed with severe plastic deformation by high-pressure torsion, leading to bulk samples. The dilution of Fe in…
Fracture mechanics of micro samples: Fundamental considerations
Reinhard Pippan, Stefan Wurster, Daniel Kiener
In this review article we consider the crack growth resistance ofmicrometer and submicrometer sized samples from the fracture mechanics point of view. Standard fracture mechanics t…
Microstructure and Failure Characteristics of Nanostructured Molybdenum Copper Composites
Katharina Schwarz, Julian Rosalie, Stefan Wurster +2
Liquid-metal infiltrated Cu30Mo70 (weigth percentage) is subjected to severe plastic deformation using high pressure torsion. The initially equiaxed dual phase structure is gradual…
Mechanical properties of electrodeposited amorphous/crystalline multilayer structures in the Fe-P system
Timo Mueller, Andrea Bachmaier, Ruth Konetschnik +2
Amorphous/crystalline multilayer structures of Fe-P alloys were deposited electrochemically using the single bath technique. Hall-Petch behavior of microhardness with respect to su…
New insights on the formation of supersaturated solid solutions in the Cu Cr system deformed by high pressure torsion
Andrea Bachmaier, Georg Benedikt Rathmayr, Daniel Apel +3
In the Cu Cr system, the formation of supersaturated solid solutions can be obtained by severe plastic deformation. Energy dispersive synchrotron diffraction measurements on as def…
Nanostructure and properties of a Cu-Cr composite processed by severe plastic deformation
Xavier Sauvage, Peter Jessner, François Vurpillot +1
A Cu-Cr composite was processed by severe plastic deformation to investigate the role of interphase boundaries on the grain size reduction mechanisms. The as-deformed material exhi…