Deformation-induced Structural Changes in Bulk Metallic Glass at Room Temperature

Room‐temperature local structure changes in a bulk metallic glass, namely crystallization and void formation, occur after uniaxial compressive plastic deformation; probably this is due to the creation of free volume. Deformation‐induced nanocrystallization may provide a synthesis of bulk amorphous‐n...

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Veröffentlicht in:	Advanced engineering materials 2003-10, Vol.5 (10), p.738-741
Hauptverfasser:	Deng, Y.F., He, L.L., Zhang, Q.S., Zhang, H.F., Ye, H.Q.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Deformation and plasticity (including yield, ductility, and superplasticity) Exact sciences and technology Materials science Mechanical and acoustical properties of condensed matter Mechanical properties of solids Metallic Glasses Metals. Metallurgy Nanocrystallization Other heat and thermomechanical treatments Physics Plastic Deformation Treatment of materials and its effects on microstructure and properties
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Zusammenfassung:	Room‐temperature local structure changes in a bulk metallic glass, namely crystallization and void formation, occur after uniaxial compressive plastic deformation; probably this is due to the creation of free volume. Deformation‐induced nanocrystallization may provide a synthesis of bulk amorphous‐nanocrystalline alloys. The Figure shows a TEM image of voids in a bulk Zr55Al10Ni5Cu30 specimen prepared by standard twin‐jet electrolytic thinning followed by low‐angle ion milling.
ISSN:	1438-1656 1527-2648
DOI:	10.1002/adem.200300383