在三元Cu-Zr-Al非晶合金的基础上,通过运用等电子浓度和等原子尺寸成分设计规则来引入第四组元Ti,将合金系拓展到Cu-Zr-Al-Ti四元合金体系,并在该四元系的等电子浓度面和等原子尺寸面的交线上进行成分设计.对设计的合金成分采用铜模吸铸法得到直径为3 mm的棒状样品.对铸态样品微观组织的分析表明:在设计的六个合金成分中有两个成分(即:Cu58Zr33Al6Ti3和Cu56.9 Zr31.5Al5.6Ti6)可以形成块体非晶合金.示差扫描量热(DSC)分析的结果表明:Cu58Zr33Al6Ti3的非晶形成能力(GFA)大于Cu56.9Zr31.5Al5.6Ti6和基础成分Cu58.1Zr35.9Al6的GFA.采用X射线衍射(XRD)和透射电子显微镜(TEM)对块体非晶合金Cu58Zr33Al6Ti3的晶化过程进行了研究.结果表明,Cu58Zr33Al6Ti3块体非晶合金的晶化分两个阶段进行:合金的初始晶化主要是对应着Cu10Zr7相的析出;而晶化的第二阶段是Cu10Zr7、CusZr3和AlCu2Zr(Ti)三个相同时析出.对非晶合金在等温退火过程中组织结构转变进行了分析和讨论.
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