Early Stages of Solid-State Amorphization Reaction During Mechanical Alloying of a Multicomponent Zr-Powder Mixture

Sagel, A.; Wanderka, N.; Wunderlich, R.; Schubert‐Bischoff, P.; Fecht, Hans‐Jörg

doi:10.1016/s1359-6462(97)00408-9

Cited by 20 publications

(12 citation statements)

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“…38,40 Recently, it was revealed that the glass formation induced by ball milling in the quaternary Zr-Al-Ni-Cu alloys proceeds as a solid-state reaction when the mixtures of elemental powders were used as starting materials. 41,42 It is quite similar to what is known for mechanical alloying of a binary alloy system. Moreover, glass formation was also achieved in a ball-milled ZrAl-Ni-Cu-Co alloy with an intermetallic phase mixture as starting materials.…”

Section: Discussionsupporting

confidence: 55%

Glass formation in a (Ti, Zr, Hf)–(Cu, Ni, Ag)–Al high-order alloy system by mechanical alloying

Zhang

Shen

2003

J. Mater. Res.

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In this work, glass formation under high-energy ball milling was investigated for a (Ti 0.33 40 Al 10 high-order alloy system with equiatomic substitution for early and late transition-metal contents. For comparison, an amorphous alloy ribbon with the same composition was prepared using the melt-spinning method as well. Structural features of the samples were characterized using x-ray diffraction, transmission electron microscopy, and differential scanning calorimetry. Mechanical alloying resulted in a glassy alloy similar to that obtained by melt spinning. However, the glass formation was incomplete, and a small amount of unreacted crystallites smaller than 30 nm in size still remained in the final ball-milled product. Like the melt-spun glass, the ball-milled glassy alloy also exhibited a distinct glass transition and a wide supercooled liquid region of about 80 K. Crystallization of this high-order glassy alloy proceeded through two main stages. After the primary nanocrystallization was completed, the remaining amorphous phase also behaved as a glass, showing a detectable glass transition and a large supercooled liquid region of about 100 K.

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Section: Discussionsupporting

confidence: 55%

Glass formation in a (Ti, Zr, Hf)–(Cu, Ni, Ag)–Al high-order alloy system by mechanical alloying

Zhang

Shen

2003

J. Mater. Res.

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“…These structural features illustrate that crystalline lattice experienced severe disturbance under high degree of localized deformation and the original nano-sized grains were further broken up into even smaller ones with size of 3~5 nm. Grain-refinement was frequently observed in multi-component alloys or intermetallics subject to severe plastic deformation317 and was suggested to be the prior step to the onset of amorphization18. The observed grain refinement in the present case can be interpreted in terms of deformation-induced structural disordering.…”

Section: Discussionsupporting

confidence: 54%

Deformation-induced localized solid-state amorphization in nanocrystalline nickel

Han

Zhao

Jiang

et al. 2012

Sci Rep

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Although amorphous structures have been widely obtained in various multi-component metallic alloys, amorphization in pure metals has seldom been observed and remains a long-standing scientific curiosity and technological interest. Here we present experimental evidence of localized solid-state amorphization in bulk nanocrystalline nickel introduced by quasi-static compression at room temperature. High-resolution electron microscope observations illustrate that nano-scale amorphous structures present at the regions where severe deformation occurred, e.g. along crack paths or surrounding nano-voids. These findings have indicated that nanocrystalline structures are highly desirable for promoting solid-state amorphization, which may provide new insights for understanding the nature of the crystalline-to-amorphous transformation and suggested a potential method to produce elemental metallic glasses that have hardly been available hitherto through rapid solidification.

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“…On the other hand, glass formation can also be achieved in the solid state through a so-called solid-state amorphization reaction (SSAR) in both deposited multilayers [7,8] and by mechanical alloying (MA) processes [9][10][11][12][13][14][15][16][17]. The two main mechanical alloying processes that can induce a crystalline-to-amorphous transformation are milling of powders [9][10][11][12][13] or repeated cold rolling [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…The two main mechanical alloying processes that can induce a crystalline-to-amorphous transformation are milling of powders [9][10][11][12][13] or repeated cold rolling [14][15][16][17]. A considerable amount of work has been performed on amorphization induced by mechanical alloying.…”

Section: Introductionmentioning

confidence: 99%

Cold-rolling induced amorphization in Cu–Zr, Cu–Ti–Zr and Cu–Ti–Zr–Ni multilayers

Dinda¹,

Rösner²,

Wilde³

2007

Journal of Non-Crystalline Solids

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Early Stages of Solid-State Amorphization Reaction During Mechanical Alloying of a Multicomponent Zr-Powder Mixture

Cited by 20 publications

References 1 publication

Glass formation in a (Ti, Zr, Hf)–(Cu, Ni, Ag)–Al high-order alloy system by mechanical alloying

Glass formation in a (Ti, Zr, Hf)–(Cu, Ni, Ag)–Al high-order alloy system by mechanical alloying

Deformation-induced localized solid-state amorphization in nanocrystalline nickel

Cold-rolling induced amorphization in Cu–Zr, Cu–Ti–Zr and Cu–Ti–Zr–Ni multilayers

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