BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260811T033815Z
UID:https://www.mpie.de/events/46261/3428329
DTSTART:20260811T110000Z
DTEND:20260811T120000Z
CLASS:PUBLIC
CREATED:20260715T122921Z
DESCRIPTION:Severe plastic deformation is a well-established method for pro
 ducing nanocrystalline and ultrafine-grained materials. Among severe plast
 ic deformation techniques\, high-pressure torsion (HPT) is particularly ve
 rsatile. In addition to deforming bulk materials\, HPT can be used for mix
 ing\, consolidation\, and alloying of powders at ambient temperatures thro
 ugh high shear strain. This avoids high-temperature processing steps\, suc
 h as sintering\, which can lead to decomposition\, and bypasses the limita
 tions imposed by phase diagrams and traditional metallurgical routes. Whil
 e HPT has traditionally been used to tailor and study advanced mechanical 
 properties\, recent interest has increasingly shifted toward functional pr
 operties.In this talk\, the use of HPT deformation to synthesize different
  magnetic materials is in focus. Magnetic properties are strongly governed
  by microstructure. By selecting different starting materials and controll
 ing grain size\, phase distribution and texture formation\, HPT provides p
 owerful opportunities to tune magnetic properties. In HPT deformed binary 
 and ternary immiscible systems\, soft magnetic properties are obtained. Ad
 ditionally\, the use of the HPT deformation process to synthesize hard mag
 netic materials and nanocomposites entitling different magnetic coupling m
 echanisms as well as exchange biased ferro- antiferromagnetic magnets is p
 resented.The research on rare-earth free magnetic materials has increased 
 significantly in recent years\, driven by criticality of the strategic rar
 e earth elements. The ferromagnetic α-MnBi phase as rare-earth free magne
 tic material has gained increasing interest\, but the fabrication of large
  volumes containing a significant amount of α-MnBi is still challenging. 
 Finally\, I will address the use of HPT deformation to synthesize the rare
 -earth free α-MnBi phase from elemental Mn and Bi powders avoiding a larg
 e number of different processing steps.\nSpeaker: Prof. Andrea Bachmaier 
LAST-MODIFIED:20260806T095520Z
LOCATION:Max Planck Institute for Sustainable Materials\, Room: Large Confe
 rence Room No. 203
ORGANIZER;CN=on invitation of Prof. Dierk Raabe:mailto:
SUMMARY:Colloquia Series on Sustainable Metallurgy: Tailorable and rare-ear
 th free magnetic materials by severe plastic deformation
URL;VALUE=URI:https://www.mpie.de/events/46261/3428329
END:VEVENT
END:VCALENDAR