摘要
以非晶合金的初始晶化相(fcc-Zr2Ni)作为Zr基非晶成分设计出发点,由于Zr2Ni相仍然保留着非晶团簇或准晶中的二十面体结构特征,其团蔟结构存在结构遗传。因此,基于团簇理论进行Zr-Al-Ni、Zr-A1-Ni-Cu、Zr-A1-Ni-Cu-Nb多元Zr基非晶成分设计。此外,为了满足Zr基非晶不同领域的应用,可用不同原子取代Zr2Ni模型中的Zr或Ni原子,一旦原子与被取代原子的局域态密度相似度高,就有替代该原子的可能性,然后利用递归法判断该元素的非晶形成能力,最终通过实验验证所设计的成分是否满足性能要求。
Taking primary devitrification phases（fcc-Zr2Ni） of amorphous alloy as the starting point,the composition design of Zr-based amorphous phase was studied.There is heredity in its clusters structure,fcc-Zr2Ni still retains amorphous clusters or icosahedral structure characteristics of quasicrystal.As a result,amorphous composition of multivariate Zr-based such as Zr-Al-Ni,Zr-A1-Ni-Cu,Zr-A1-Ni-Cu-Nb was designed based on cluster theory.Besides,in order to meet the needs of different fields,replacing Zr or Ni atom in Zr2Ni model with other atoms.Once the local density of state similarity between original atom and current atom is high enough,it is possible for the original atom to be substituted.The glass forming ability of that element was measured by recursive method.Finally,the designed component whether it meets the performance requirement was tested by experiment.
出处
《热加工工艺》
CSCD
北大核心
2010年第24期24-27,32,共5页
Hot Working Technology
基金
辽宁省教育厅基金资助项目(2008297)
