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为了将Al-Cu-Ti非晶合金中的晶体相含量降到最低,通过调整Cu和Ti元素的含量和球磨时间对Al65Cu35-xTix合金进行优化设计。研究结果表明:增加Ti元素的含量能够降低AlCu2Ti、Cu9Al4和Al2Cu等金属间化合物的含量;而延长球磨时间可以降低合金中元素相的含量,最终确定的最优成分为Al65Cu16.5Ti18.5。另外,所有优化合金中都存在TiH2相,这是由于在球磨作用下工程控制剂甲苯分解出的H原子与Ti元素反应生成了TiH2。TiH2在最优成分Al65Cu16.5Ti18.5合金中的体积分数为4.30%。
In order to minimize the phase content of Al-Cu-Ti amorphous alloy, Al65Cu35-xTix alloy was optimized by adjusting the content of Cu and Ti and the milling time. The results show that increasing the content of Ti can reduce the content of intermetallic compounds such as AlCu2Ti, Cu9Al4 and Al2Cu. However, prolonging the milling time can reduce the content of elemental phase in the alloy. The optimal composition of Al65Cu16.5Ti18.5 is finally determined. In addition, the TiH2 phase is present in all the optimized alloys due to the TiH2 formed by the reaction of the H atom, which is decomposed by the toluene of the engineering control agent under ball milling, with the Ti element. The volume fraction of TiH2 in the optimum composition Al65Cu16.5Ti18.5 alloy is 4.30%.