利用电弧熔炼及铜模快速铸造法制备Zr41.2Ti13.8Cu12.5Ni10Be22.5块体非晶合金,通过热膨胀法测试晶化过程,与差示扫描量热法进行对比.通过高分辨电子显微镜观察晶化初期晶核的形成和长大规律.结果表明,热膨胀系数测试块体非晶合金的结构弛豫、玻璃转变、过冷液相区、晶化开始温度和晶化过程中不同晶化峰温度与差示扫描量热法测试结果完全吻合.在高分辨像中观察到近似球形的纳米晶粒和晶格条纹.然而,在高分辨像中很难辨认出晶化初期微小的晶化区域,只有对其进行快速傅里叶变换才能发现微小区域的晶化基本特征.
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