FATIGUE LIFE BEHAVIOR OF MONOCRYSTALLINE COPPER IN 0. 1 M PERCHLORIC ACID.

被引：0

作者：

Yan, Benda ^{[1
]}

Farrington, Gregory C. ^{[1
]}

Laird, Campbell ^{[1
]}

机构：

[1] Univ of Pennsylvania, Philadelphia,, PA, USA, Univ of Pennsylvania, Philadelphia, PA, USA

来源：

Fatigue and Fracture of Engineering Materials and Structures | 1985年 / 8卷 / 03期

关键词：

ACIDS - CRYSTALS - Crack Propagation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The authors have studied the fatigue lives of single crystals of copper in 0. 1 M HClO//4 under different polarization potentials. Perchloric acid was chosen for the aqueous environment because it allows us to control the corrosion reactions rigorously. Persistent slip band (PSB) behavior and crack nucleation were studied during life, and fracture surfaces after failure. Different behavior was observed depending on strain amplitude. At 2 greater than 10** minus //3 plastic shear strain amplitude, anodic potential was observed to decrease life, whereas cathodic potential was found to be less damaging than laboratory air. Crack nucleation and propagation occurred along the primary slip plane for both conditions. The reduction of fatigue life under anodic potential is explained by enhanced localized strain at the PSB's and preferential dissolution within them.

引用

页码：259 / 276