Grain Boundary Relaxation in a Fe-Cr-Al Alloy

被引：0

作者：

Zhou, Z. C. ^{[1
]}

Wang, Q. Z. ^{[2
]}

Du, J. ^{[1
]}

Yang, H. ^{[1
]}

Yan, Y. J. ^{[1
]}

机构：

[1] Suzhou Vocat Univ, Suzhou 215104, Jiangsu, Peoples R China

[2] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

来源：

ADVANCED MATERIALS, PTS 1-3 | 2012年 / 415-417卷

关键词：

Grain Boundary Relaxation; Fe-25Cr-5Al alloy; DAMPING CAPACITY; DIFFUSION; PEAK;

D O I：

10.4028/www.scientific.net/AMR.415-417.2134

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The features of grain boundary relaxation of a (wt.%)Fe-25Cr-5Al alloy have been investigated using a multifunction internal friction apparatus. The grain boundary relaxation peak appears at about 630 degrees C on the internal friction-temperature curves for the alloy. The peak temperature shifts toward high temperature with increasing frequency. In terms of Arrihenius relation, the activation energy is calculated to be 4.07(+/- 0.15)eV and the pre-exponential factor is 6.2x10(-24 +/- 1)s. Grain boundary relaxation strength remarkably decreases with increasing grain size. When grain size reaches 520 mu m, the grain boundary relaxation peak almost disappears.

引用

页码：2134 / +

页数：2

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