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- Eckert Jürgen
- IFW Dresden, Institut für Metallische Werkstoffe
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- Deledda Stefano
- IFW Dresden, Institut für Metallische Werkstoffe
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- Kühn Uta
- IFW Dresden, Institut für Metallische Werkstoffe
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- Reger-Leonhard Alexandra
- IFW Dresden, Institut für Metallische Werkstoffe
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Single-phase (Zr/Ti)–Cu–Al–Ni metallic glasses were synthesized by copper mold casting and mechanical alloying of elemental powder mixtures. In addition, nanostructured metallic glass composites were produced by annealing of as-cast specimens and by mechanical alloying of elemental powder mixtures blended with different volume fractions of ZrC particles. For cast specimens, the effect of composition on the thermal stability and the microstructure after partial crystallization was investigated by X-ray diffraction and differential scanning calorimetry. Ti additions lead to a lower overall thermal stability of the material and induce primary crystallization. The grain size of the precipitates after the first crystallization stage becomes progressively finer with increasing Ti content, yielding grain sizes as small as about 2 nm for Zr54.5Ti7.5Cu20Al10Ni8. For mechanically alloyed Zr55Cu30Al10Ni5 powders containing up to 30 vol% nanoscale ZrC particles, stoichiometry variations of the glass due to particle dissolution in the glassy matrix during the mechanical alloying process were observed, which affect the thermal stability of the glassy matrix phase. Nevertheless, the composites maintain an extended supercooled liquid region before crystallization.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 42 (4), 650-655, 2001
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679222671616
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- NII論文ID
- 130004451493
- 10006548418
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD3MXktlKjsb4%3D
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 5764749
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可