Effect of niobium and grain boundary density on the fire resistance of Fe-C-Mn steel

被引：33

作者：

Dere, E. Gozde ^{[1
]}

Sharma, Hemant ^{[1
]}

Petrov, Roumen H. ^{[1
,2
]}

Sietsma, Jilt ^{[1
]}

Offerman, S. Erik ^{[1
]}

机构：

[1] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands

[2] Univ Ghent, Dept Mat Sci & Engn, B-9052 Ghent, Belgium

来源：

SCRIPTA MATERIALIA | 2013年 / 68卷 / 08期

关键词：

Fire resistance; Grain boundary density; Niobium; EBSD; Misorientation; STRUCTURAL-STEELS; PRECIPITATION;

D O I：

10.1016/j.scriptamat.2012.12.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We show that the addition of 0.10 wt.% Nb to Fe-C-Mn steel increases the failure temperature of the steel by 92 degrees C during a fire-resistance test. Moreover, we demonstrate that increasing the grain boundary density of the steel with NbC precipitates from 0.06 to 0.64 mu m(-1) by increasing the cooling rate during the austenite-to-ferrite phase transformation from 0.17 to 100 degrees C s(-1) increases the failure temperature linearly by an additional 45 degrees C. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：651 / 654

页数：4

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