ATOMIC STRUCTURE OF GRAIN BOUNDARIES AND INTERGRANULAR SEGREGATION
ATOMIC STRUCTURE OF GRAIN BOUNDARIES AND INTERGRANULAR SEGREGATION
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晶界的原子结构和晶间偏析
DOI：
10.1051/jphyscol:1982615
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
G. Wang
中科院分区：
文献类型：
--
作者：
V. Vítek;G. Wang
- 本文首先讨论了纯金属晶界原子结构的一些重要方面，特别是一般晶界的结构模型和结构的多样性。然后概述了描述合金中原子相互作用的经验方案。一般的，结构独立的，隔离的属性进行检查，在这个计划的框架。然后提出了具有低杂质浓度以及杂质浓度逐渐增加的晶界的原子计算结果。边界结构之间的关系和偏析的倾向与偏析引起的结构变化，根据这些计算进行了讨论。
— Some Important aspects of the atomic structure of grain boundaries in pure metals, in particular the structural model of general grain boundaries and the multiplicity of structures, are discussed first. An empirical scheme for the desciption of atomic interactions in alloys is then outlined. General, structure independent, properties of segregation are examined in the framework of this scheme. Results of the atomistic calculations of grain boundaries with a low as well as a gradually increasing concentration of impurities are then presented. The relationship between the boundary structure and the propensity to segregation together with the structural changes invoked by segregation, are discussed in the light of these calculations.