Devitrification of glassy Al85Ni10La5 powder by thermal treatment and ball-milling

Liu, Yao; Schumacher, G.; Zimmermann, Sören; Banhart, John

doi:10.1016/j.jallcom.2010.12.041

Cited by 7 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results are in qualitative agreement with results obtained by plastic deformation of amorphous Al 85 Ni 10 La 5 powder by high pressure torsion [15] and ball-milling [9].…”

Section: Resultssupporting

confidence: 91%

“…Such Al-nanocrystals have been detected after heat treatment [3] and after plastic deformation [1,4,5] of Al-based amorphous alloys. Deformation-induced crystallization at ambient and sub-ambient temperatures has been observed after cold-rolling [4], nanoindentation [5], high pressure torsion [6], extreme bending [7,8], and ball-milling [4,9]. It is yet unclear whether the underlying mechanism for strain-induced crystallization is thermal or athermal.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Plastic deformation of Al85Ni10La5 by equal channel angular pressing

Vierke

Schumacher

Balog

et al. 2012

Materials Science and Engineering: A

Self Cite

View full text Add to dashboard Cite

“…These results are in qualitative agreement with results obtained by plastic deformation of amorphous Al 85 Ni 10 La 5 powder by high pressure torsion [15] and ball-milling [9].…”

Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Plastic deformation of Al85Ni10La5 by equal channel angular pressing

Vierke

Schumacher

Balog

et al. 2012

Materials Science and Engineering: A

Self Cite

View full text Add to dashboard Cite

“…Second-run data in which the samples had already fully crystallized provided the baselines. The amorphous nature in the as-atomized state was confirmed by X-ray diffraction 23 and transmission electron microscopy. The EXAFS spectra of the as-atomized powder along with the single-shell fit to the data are shown in Fig.…”

Section: Methodsmentioning

confidence: 93%

“…The DSC trace of the as-atomized powder reveals an exothermal reaction between about 100 C and the onset of glass transition T g,o (T g,o ¼ 253.5 C, see Ref. 23), which reflects the annihilation of free volume in the as-atomized state. The amount of heat released below T g,o increases continuously during ball milling, while the endothermic reaction reflecting the glass transition gradually vanishes.…”

Section: Methodsmentioning

confidence: 98%

Change in atomic coordination in a heavily deformed metallic glass

Liu

Schumacher

Riesemeier

et al. 2014

Journal of Applied Physics

View full text Add to dashboard Cite

Articles you may be interested inUnderstanding the changes in ductility and Poisson's ratio of metallic glasses during annealing from microscopic dynamics J. Appl. Phys. 118, 034901 (2015); 10.1063/1.4923304The heterogeneous structure of metallic glasses revealed by superconducting transitions A quantitative link between microplastic instability and macroscopic deformation behaviors in metallic glassesThe local structure around Ni and La atoms in Al 85 Ni 10 La 5 amorphous powder after ball milling was investigated by X-ray absorption spectroscopy. A continuous decrease in coordination number of Ni and La as a function of milling time was observed, while the nearest neighbour distance and the mean square atomic displacement did not change, pointing at the creation of free volume around the Ni and La atoms. These structural changes resemble those of a liquid upon temperature increase. The results are described by a shear band model in which the coordination numbers of Ni and La are different within and outside a shear band. V C 2014 AIP Publishing LLC.

show abstract

“…On the other hand, much effort has been made to tailor the microstructure of metallic glasses by heat treatment [7][8][9][10], with a view to achieving partial crystallization for improved mechanical properties. Isothermal sintering of metallic glass powder can realize both densification and partial crystallization simultaneously.…”

Section: Introductionmentioning

confidence: 99%