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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Comparative study of the effect of cold rolling on the structure of Al-RE-Ni-Co (RE = rare-earth metals) amorphous and glassy alloys
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Comparative study of the effect of cold rolling on the structure of Al-RE-Ni-Co (RE = rare-earth metals) amorphous and glassy alloys

机译：冷轧对Al-RE-Ni-Co（稀土金属）非晶态和玻璃态合金结构影响的比较研究

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The present paper aims to compare the deformation-induced crystallization behavior of the rapidly solidified ribbon samples of Al85Y8Ni5Co2,Al85Nd8Ni5Co2, Al85Gd8Ni5Co2 and Al(85)Mm(8)Ni(5)Co(2) non-crystalline alloys subjected to cold rolling with 33% reduction. It is found that amorphous Al95Y8Ni5Co2 alloys exhibiting glass-transition and Al85Nd8Ni5Co2 alloys exhibiting no glass-transition have somewhat different stabilities against crystallization under deformation at room temperature though their crystallization temperatures under heating without load or deformation are almost equal. Al85Gd8Ni5Co2 and Al(85)Mm(8)Ni(5)Co(2) alloys (Mm = Mischmetal) did not exhibit deformation-induced crystallization at the reduction ratio used. Although, the formation of the primary nanoscale alpha-Al particles was observed in both Al85Y8Ni5Co2 and Al85Nd8Ni5Co2 alloys after the cold rolling, the size and volume fraction of the particles are larger in the Nd-bearing amorphous alloy as compared to the Y-bearing alloy. It is found that contrary to crystallization on heating no intermetallic compounds but only alpha-Al nano particles were formed during the deformation-induced crystallization of Al85RE8Ni5Co2 amorphous alloys. The local heating on deformation is hypothesized to affect the crystallization. (c) 2006 Elsevier B.V. All rights reserved.
机译：本文旨在比较冷凝固的Al85Y8Ni5Co2，Al85Nd8Ni5Co2，Al85Gd8Ni5Co2和Al（85）Mm（8）Ni（5）Co（2）非晶态合金快速凝固的带状样品的变形诱导结晶行为减少33％。发现在室温下变形时的无定形Al95Y8Ni5Co2合金和没有玻璃化转变的Al85Nd8Ni5Co2合金在室温下变形时的抗结晶化稳定性略有不同，尽管它们在没有负载或变形的加热下的结晶温度几乎相等。 Al85Gd8Ni5Co2和Al（85）Mm（8）Ni（5）Co（2）合金（Mm = Mischmetal）在使用的还原率下未显示出变形诱导的结晶。尽管在冷轧后在Al85Y8Ni5Co2和Al85Nd8Ni5Co2合金中均观察到了原生纳米级α-Al颗粒的形成，但与含Y合金相比，含Nd的非晶态合金中颗粒的尺寸和体积分数更大。 。发现与在加热下结晶相反，在Al85RE8Ni5Co2非晶态合金的变形诱导结晶过程中，没有金属间化合物，仅形成了α-Al纳米颗粒。假设变形时局部加热会影响结晶。 （c）2006 Elsevier B.V.保留所有权利。

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