Electronic structure characterization of bonding of grain boundaries and fracture mode of steels

被引：0

作者：

Zhang, XZ ^{[1
]}

Zhang, L ^{[1
]}

Ma, Y ^{[1
]}

Qi, JJ ^{[1
]}

Yuan, J ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

ACTA METALLURGICA SINICA | 2005年 / 41卷 / 06期

关键词：

steel; electronic structure; grain boundary; fracture mode; EELS;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Electron energy loss spectroscopy (EELS) was used to study grain boundaries in steels. The normalized 3d occupancies of states of irons both in bulk and at grain boundary were calculated according to the EELS data which are related to the change in the bonding of grain boundaries and the fracture mode of the steels. It is found that if the grain boundary (GB) has a higher occupancy of 3d states of iron than that of the bulk, the sample has a weak bonding of GB and tends to intergranular fracture. Otherwise if the GB has almost the same occupancy of 3d state of iron as the bulk, the sample has a strong bonding of GB and tends to transgranular fracture.

引用

页码：617 / 621

页数：5

共 17 条

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