Understanding the Cu-Zn brass alloys using a short-range-order cluster model: significance of specific compositions of industrial alloys.
Understanding the Cu-Zn brass alloys using a short-range-order cluster model: significance of specific compositions of industrial alloys.
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使用短程有序簇模型了解铜锌黄铜合金:工业合金特定成分的意义
DOI:
10.1038/srep07065
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发表时间:
2014-11-17
影响因子:
4.6
通讯作者:
Liaw PK
中科院分区:
文献类型:
--
作者:
Hong HL;Wang Q;Dong C;Liaw PK
Metallic alloys show complex chemistries that are not yet understood so far. It has been widely accepted that behind the composition selection lies a short-range-order mechanism for solid solutions. The present paper addresses this fundamental question by examining the face-centered-cubic Cu-Zn α-brasses. A new structural approach, the cluster-plus-glue-atom model, is introduced, which suits specifically for the description of short-range-order structures in disordered systems. Two types of formulas are pointed out, [Zn-Cu12]Zn1~6and [Zn-Cu12](Zn,Cu)6, which explain the α-brasses listed in the American Society for Testing and Materials (ASTM) specifications. In these formulas, the bracketed parts represent the 1st-neighbor cluster and each cluster is matched with one to six 2nd-neighbor Zn atoms or with six mixed (Zn,Cu) atoms. Such a cluster-based formulism describes the 1st- and 2nd-neighbor local atomic units where the solute and solvent interactions are ideally satisfied. The Cu-Ni industrial alloys are also explained, thus proving the universality of the cluster-formula approach in understanding the alloy selections. The revelation of the composition formulas for the Cu-(Zn,Ni) industrial alloys points to the common existence of simple composition rules behind seemingly complex chemistries of industrial alloys, thus offering a fundamental and practical method towards composition interpretations of all kinds of alloys.
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影响因子:
8.6
作者:
Abrikosov, IA;Niklasson, AMN;Skriver, HL
通讯作者:
Skriver, HL
影响因子:
3.7
作者:
REINHARD, L;SCHONFELD, B;BUHRER, W
通讯作者:
BUHRER, W
影响因子:
3.2
作者:
DAMASK, AC
通讯作者:
DAMASK, AC
影响因子:
2.3
作者:
Wang Qing;Zha Qianfeng;Ji Chunjun
通讯作者:
Ji Chunjun
DOI:
10.1088/0305-4608/11/10/021
发表时间:
1981-01-01
期刊:
JOURNAL OF PHYSICS F-METAL PHYSICS
影响因子:
--
作者:
ROSSITER, PL
通讯作者:
ROSSITER, PL