• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Recent advances in fracture >Corrosion fatigue crack initiation processes
【24h】

Corrosion fatigue crack initiation processes

机译：腐蚀疲劳裂纹萌生过程

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Aqueous corrosion fatigue deformation processes lead to premature crack initiation. Under coditions of active surface dissolution, emerging persistent slip bands (PSB's) are preferentially attacked by dissolution. This preferential attack leads to enhanced mechanical instability of the free surface of a metal or allo9y, and the generation of new and larger PSB's, which, in turn, lead to a localization of corrosion attack and, accordingly, crack initiation. Under passive conditions, the relative rates of periodic rupture and reformation of the passive film appear to be the important phenomena that determine the extent to which fatigue resistance is lowered by the environment. When bulk oxide films are present on a surface, rupture of the film by PSM's leads to preferential dissolution of the fresh metal that is produced.
机译：水腐蚀疲劳变形过程会导致过早的裂纹萌生。在活性表面溶解的条件下，新出现的持久滑带（PSB）优先受到溶解的攻击。这种优先侵蚀会导致金属或合金的自由表面的机械不稳定性增强，并会生成新的更大的PSB，进而导致腐蚀侵蚀的局部化并因此引发裂纹。在被动条件下，被动薄膜的周期性破裂和再形成的相对速率似乎是决定环境降低疲劳强度的重要现象。当表面上存在块状氧化膜时，PSM导致的膜破裂会导致所产生的新鲜金属优先溶解。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号