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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αAl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Scherer公式计算各晶化相,得到αAl、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
Through the crystallization method, the rapidly solidified Al88Ce2Ni10 amorphous aluminum alloy can be prepared into nanocrystalline alloy. Nanocrystalline alloy microstructure of α Al solid solution and intermetallic compounds Al3Ni and Al11Ce3 multiphase nanocrystalline structure. In the wide annealing temperature range of 603 ~ 773K, the crystallized phases were calculated by Scherer formula, and the grain sizes of αAl, Al3Ni and Al11Ce3 were 31 ~ 316,22 ~ 207 and 19 ~ 165nm, respectively. The results show that by controlling the conditions of heat treatment, nanocrystalline alloys with different grain sizes can be obtained. The optimum annealing temperature for obtaining ultrafine nanocrystalline alloy with fine grains and uniform structure is the vicinity of the second DSC peak temperature