A Large Tensile Elongation Induced by Crystallization in an Amorphous Al&lt;SUB&gt;88&lt;/SUB&gt;Ni&lt;SUB&gt;10&lt;/SUB&gt;Ce&lt;SUB&gt;2&lt;/SUB&gt; Alloy

Inoue, Akihisa; Kim, Yeong-Hwan; Masumoto, T.

doi:10.2320/matertrans1989.33.487

Cited by 51 publications

(12 citation statements)

References 5 publications

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“…When no constraints are involved as in tensile tests the total amount of deformation is concentrated in a few shear bands and failure of the sample is generally observed immediately after the elastic deformation [19]. But when constraints are imposed as in cold rolling, a large number of shear bands are formed enabling the movement of matter in the ribbon to fill voids or levelling undulations and the deformation is well distributed among the shear bands.…”

Section: Discussionmentioning

confidence: 97%

Mechanical properties of Al based amorphous and devitrified alloys containing different rare earth elements

Rizzi

Battezzati

2004

Journal of Non-Crystalline Solids

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Section: Discussionmentioning

confidence: 97%

Mechanical properties of Al based amorphous and devitrified alloys containing different rare earth elements

Rizzi

Battezzati

2004

Journal of Non-Crystalline Solids

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“…Several systems have been reported that exhibit coexistent nanocrystalline and amorphous phases, such as fcc-Ni in Ni-Si -B, 1 fccAl in Al-Ni -Ce, 2 hcp-Mg in Mg -Zn-La, 3 and hcpCo in Co-Zr-B, 4 and have been observed to form using rapid cooling techniques like splat-quenching or melt-spinning. The thickness of these samples is below 50 mm, and the estimated cooling rate is about 10 6 K͞s.…”

Section: Introductionmentioning

confidence: 99%

Precipitation of bcc nanocrystals in bulk Mg–Cu–Y amorphous alloys

Liu

Johnson

1996

J. Mater. Res.

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Coexistent amorphous and nanoscale bcc-Mg 7 Li 3 phases were found in slowly quenched alloys of the Mg 65-x Li x Cu 25 Y 10 system containing 3 to 15 at. % Li. The crystallization behavior of these alloys has been studied. The grain size of the nanocrystalline bcc phase which is formed ranges from 2 to 20 nm. The volume fraction of nanocrystalline phases as well as the grain size of the nanocrystals increase as the Li composition increases. Transmission electron microscopy studies suggest that the alloy exhibits phase separation in the undercooled liquid state and that the nucleation and growth of the bcc-nanocrystals is related to the phase separation. Some characteristic thermal properties of the glassy phase are presented, and the composition dependence of Tg and Tx is discussed. It is concluded that the addition of a small amount of Li is essential for the production of a bcc nanocrystalline phase in the Mg -Li-Cu-Y system.

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“…During the loading process, stress overshoot and serrated deformation appear with the change of temperature. Unlike Al-based metallic glassy ribbons, which show obvious strain hardening near the glass transition temperature at some certain strain rate range [21,22] , this alloy indicates obvious softening behavior with the increase of strain and much greater elongation in the supercooled liquid region. According to the above experimental results, it was found that the deformation behavior of Zr 50 Cu 40 Al 10 metal glass is quite different near the supercooled liquid region.…”

Section: Discussionmentioning

confidence: 99%

Deformation and fracture of a Zr-Al-Cu metallic glass ribbon under tension near glass transition temperature

Gao

Dong

et al. 2018

China Foundry

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A morphous alloys have excellent mechanical properties compared with traditional crystalline alloys, such as high strength, superplasticity in the supercooled liquid region, good corrosion resistance and large elastic limit [1] . An amorphous alloy is a kind of metallic material with only a short-range order on the atomic scale. Because its microstructure is quite similar to that of glass and it forms from rapid cooling of metals, it is also called metallic glass [2][3][4][5] . Lack of typical defects for polycrystalline alloys, such as grain boundaries and dislocations, metallic glasses attract a lot of research interests on fabrication methods, properties and applications [6][7][8] of tension, even compression [9] . The limited plastic deformation under tension or compression is normally localized in a single primary shear band of about 10 nm thick, rendering no observable global plastic deformation. The localized shear banding introduces a brittle manner of rupture, causing catastrophic failure under loading higher than the strength as in ceramic materials. Thus, the practical application as structural materials is seriously restricted The mechanical behavior and fracture of bulk metallic glasses at room temperature were widely investigated and in-depth fracture analysis was carried out. Zhang [10] et al. found the existence of a large number of radial dimples in the tensile fracture surface in Zr-based metallic glasses at room temperature. Wang [11] et al.found that the tensile fracture morphology of Zr-based amorphous alloy presents a typical vein pattern. A lot of efforts have also been made to enhance global plasticity or ductility of metallic glasses at room temperature. Zhang et al. [12] introduced compression surface stresses to obstruct single primary shear band propagation and shear localization, the remarkable improvement of ductility was obtained in bulk metallic glasses. It is still difficult to achieve tensile ductility of monolithic metallic glasses. Guo et al. [13] employed in situ transmission electron microscope to determine the deformation nature of the small-sized metallic glass under tension. For the 100 nm thick sample, great tensile *Hong-wang YangMale, born in 1974, PhD, associate professor. His research interest mainly focuses on the development of metallic glasses with high glass forming ability, high temperature mechanical behavior and crystallization mechanisms of amorphous alloys.

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A Large Tensile Elongation Induced by Crystallization in an Amorphous Al<SUB>88</SUB>Ni<SUB>10</SUB>Ce<SUB>2</SUB> Alloy

Cited by 51 publications

References 5 publications

Mechanical properties of Al based amorphous and devitrified alloys containing different rare earth elements

Mechanical properties of Al based amorphous and devitrified alloys containing different rare earth elements

Precipitation of bcc nanocrystals in bulk Mg–Cu–Y amorphous alloys

Deformation and fracture of a Zr-Al-Cu metallic glass ribbon under tension near glass transition temperature

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