Production of Bulk Metallic Glasses by Severe Plastic Deformation

Metals

Lisa Krämer¹  Reinhard Pippan¹  Karoline S. Kormout¹  Yannick Champion²  Daria Setman³ 

[1] Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben 8700, Austria;Institut de Chimie et des Matériaux Paris-Est, Université Paris-Est Créteil, Thiais 94320, France;Physics of Nanostructured Materials, Faculty of Physics, University of Vienna, Vienna 1090, Austria;

关键词: severe plastic deformation;    bulk metallic glass;    Zr;   

DOI  :  10.3390/met5020720

来源: DOAJ

【 摘 要 】

The aim of this study was to show the possibility to produce bulk metallic glass with severe plastic deformation. High pressure torsion was used to consolidate Zr-based metallic glass powder and deform it further to weld the powder particles together. The produced samples were investigated with Scanning electron microscope (SEM), Transmission electron microscope (TEM), Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) to check if the specimens are fully dense and have an amorphous structure. The results show that the specimens remain amorphous during high pressure torsion and the density depends on the applied strain. Additional Vickers hardness measurements enable a comparison with literature and show for Zr-based metallic glass powder typical values (approximately 500 HV).

【 授权许可】

Unknown