Fatigue crack growth of Fe3Al,Cr alloys

被引：27

作者：

Alven, DA

Stoloff, NS

机构：

[1] Mat. Sci. and Engineering Department, Rensselaer Polytechnic Institute, Troy

来源：

SCRIPTA MATERIALIA | 1996年 / 34卷 / 12期

关键词：

D O I：

10.1016/1359-6462(96)00078-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The ternary alloy undergoes an increase in crack propagation rate and a loss of fracture toughness in hydrogen gas and moisture bearing environments. A similar effect was seen on the ductility of the ternary alloy in tensile test. The embrittling effect in air is attributed to the oxidation of aluminum by water vapor to release hydrogen gas. The Fe-Al-Cr-Zr alloy is also embrittled by moisture in air in the same manner. However, laboratory air had a much less drastic effect on the crack growth rate and fracture toughness of the Fe-Al-Cr-Zr alloy. The addition of Zr appears to improve the crack growth characteristics of Fe3Al-type alloys.

引用

页码：1937 / 1942

页数：6

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