CORROSION FATIGUE CRACK GROWTH OF MEDIUM STRENGTH STEEL HT60 IN SYNTHETIC SEA WATER

被引：0
|
作者：
GAO Hongbin
机构：
来源：
Acta Metallurgica Sinica(English Edition) | 1992年 / 07期
关键词：
corrosion fatigue; crack growth; crack closure; synthetic seawater;
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学科分类号：
摘要：
The corrosion fatigue crack growth and near-threshold characteristics of a medium strengthsteel HT60 were investigated using compact tension specimens exposed to synthetic sea water.The da/dN-△AKrelation in air can give a conservative estimation of da/dN-△K relationsin sea water. In the case of high R, however, crack growth acceleration at high △K regionsappears to be cantrolled by the stress-assisted dissolution. The crack opening stressinlensity factor Kdetected by the back-face-strain method is the result of crack surface incontact with the corrosion products and therefore an overestimated value of Kat the cracktip is given.
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页码：48 / 52
页数：5
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