李晓娜

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:材料科学与工程学院

学科:材料物理与化学

办公地点:三束实验室2号楼302室

联系方式:0411-84708380-8302

电子邮箱:lixiaona@dlut.edu.cn

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Electrical resistivity interpretation of ternary Cu-Ni-Mo alloys using a cluster-based short-range-order structural model

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论文类型:期刊论文

发表时间:2016-01-27

发表刊物:JOURNAL OF PHYSICS D-APPLIED PHYSICS

收录刊物:SCIE、EI、Scopus

卷号:49

期号:3

ISSN号:0022-3727

关键字:electrical resistivity; cluster-plus-glue-atom model; short-range order; Cu alloys; ternary alloys

摘要:The electrical resistivity of metallic alloys is known to be largely affected by chemical short-range ordering. In accordance with the cluster-plus-glue-atom model for solid solutions, the present paper interpreted the composition versus resistivity behavior of Cu-Ni-Mo ternary alloys. The presence of Mo-centered [Mo-Ni-12] nearest-neighbor clusters is assumed, as the result of the negative enthalpy of mixing between Mo and Ni. The residual electrical resistivities are then correlated to the scattering from the [Mo-Ni-12] clusters, plus that from extra Ni solutes in solution with Cu for Mo/Ni < 1/12 or from Mo precipitates for Mo/Ni > 1/12. Such a cluster-based mechanism explains perfectly the experimental resistivity data, with the additional resistivities from the cluster, Ni solute, and Mo precipitate being, respectively, 1.08, 1.21, and 0.09 ( 10(-8) Omega m). The present work provides a simple method for the electrical resistivity manipulation of metallic alloys.