ENVIRONMENTALLY ASSISTED FATIGUE CRACK GROWTH RATES IN SAE-4340 STEEL

被引：9

作者：

GALLAGHER, JP

SINCLAIR, GM

机构：

[1] Department of Theoretical and Applied Mechanics, University of Illinois, Urbana, IL

来源：

JOURNAL OF BASIC ENGINEERING | 1969年 / 91卷 / 04期

关键词：

D O I：

10.1115/1.3571196

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion fatigue crack growth rates for SAE 4340 steel in distilled water environments were investigated utilizing fracture mechanics techniques. Crack growth rales, resulting from various forms of repealed loading, were compared to those induced by static load using small sample statistical theory. These comparisons indicate that corrosion fatigue crack growth may be either time or cycle dependent depending on the load profile, loading frequency, and temperature. Data are presented suggesting that whenever the maximum cyclic stress intensity in the fatigue cycle is below the static threshold stress intensity (Kiscc), the environment no longer plays a major part in assisting the crack growth rate. © 1969 by ASME.

引用

页码：598 / +

页数：1