Formation of intermetallic compounds of Cu/Al multilayer foils during cold rolling
查看参考文献32篇
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文摘
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In metallurgical theory, the generation of new phases requires high temperature diffusion over a long period of time. Here, we report an experimental study of the generation of new phases using large mechanical deformations and high pressure, rather than heat. A 4.83-mm-thick 23-layered Cu/Al sandwich strip was formed by cold rolling. When the Cu/Al sandwich was further rolled to a 0.13-mm- thick foil on a four-high micro-foil mini mill at room temperature, some rectangular-shaped phases appeared at the Cu/Al interfaces. The scanning electron microscopy, transmission electron microscopy, and X-ray diffraction analyses reveal that the phases are a mixture of Al_2Cu/ AlCu/Al_4Cu_9, which indicates that chemical reactions occur at the Cu/Al interfaces during cold deformation. This study provides new insights into the design and development of composite materials for various applications. |
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其他语种文摘
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金属学理论认为新相的形成需要高温且长时间. 然而, 本研究发现, 在没有热作用的前提下, 大的机械变形和大的压力也可以使一些新相产生. 实验中首先采用冷轧方法制备出4.83 mm厚的三明治Cu/Al复合带(23层), 然后在四辊微成型轧机上(3M轧机)进行冷轧. 当Cu/Al复合带被轧到厚度为0.13 mm时, 发现在Cu/Al界面处有矩形状的相出现. 采用SEM、TEM和XRD分析得出, 这些相是由三种不同的金属间化合物Al_2Cu/AlCu/Al_4Cu_9所组成, 这表明冷变形过程中Cu/Al界面之间发生了化学反应. 这一发现为设计和研制具有特殊性能的复合材料提供了新思路. |
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来源
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Science China. Materials
,2015,58(7):574-583 【核心库】
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DOI
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10.1007/s40843-015-0070-1
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关键词
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metallurgical theory
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temperature
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diffusion
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地址
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1.
Research Institute of Science and Technology, Northeastern University, Shenyang, 110189
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Mechanical and Electronic Engineering College, Xuzhou Institute of Technology, Xuzhou, 221008
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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2095-8226 |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金
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江苏省自然科学基金
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江苏省六大人才高峰计划资助
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the Project of Science and Technology Plan of Ministry of Housing and Urban-Rural Development of China
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文献收藏号
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CSCD:5549612
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