纳米晶Al88Ce2Ni10铝合金的形成
来源期刊：中国有色金属在线1997年第2期
论文作者：宋广生 杨根仓 周尧和 张欣梅 沈军 李庆春
文章页码：86 - 89
关键词：非晶铝合金 Al88Ce2Ni10 快速凝固 晶化 纳米晶
Key words：crystallization nanocrystallite rapid solidification amorphous aluminum alloy
摘 要：通过晶化法，可以将快凝Al88Ce2Ni10非晶铝合金制备成纳米晶合金。纳米晶合金的组织为α-Al 固溶体和金属间化合物Al3Ni 及Al11Ce3组成的多相纳米晶结构。在 603～773K较宽退火温区内，用Scherrer公式计算各晶化相，得到α-Al、Al3Ni及Al11Ce3 的晶粒尺寸分别为31～316、22～207及19～165nm。结果表明，通过控制热处理条件， 可以获得不同晶粒尺寸的纳米晶合金。其中获得晶粒细小、结构均匀超细纳米晶合金的最佳退火温度为第二DSC峰值温度附近。
Abstract: Nanocrystalline alloy has been prepared by crystallization from rapidly solidified Al88Ce2Ni10 amorphous aluminum alloy. Microstructure of nanocrystalline alloy is a multiphase nanocrystalline structure composed of α-Al solid solution and intermetallic compounds Al3Ni and Al11Ce3. In a wide range of annealing temperature 603～773 K, the grain sizes of crystallization phases α-Al, Al3Ni and Al11Ce3 calculated by Scherrer formula are 31～316, 22～207 and 19～165 nm, respectively. It is concluded that the different size nanocrystalline alloys can be obtained by the control of heat treatment condition, in which the optimum annealing temperature of nanocrystalline alloy with small grain and homogeneous structure is near the second DSC peak.
