• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems: Water Reactors 2005 vol.2 >Stress intensity and temperature dependence for crack growth rate in weld metal Alloy 182 in primary PWR environment
【24h】

Stress intensity and temperature dependence for crack growth rate in weld metal Alloy 182 in primary PWR environment

机译：初级压水堆焊环境中182合金金属的裂纹扩展速率与应力强度和温度的关系

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

Nickel-base weld metals are commonly used in nuclear power plants, and intergranular stress corrosion cracking is a potential problem for these alloys. In an international perspective there is a need for good crack growth rate data for Alloy 182 in primary side PWR environments. Knowledge about crack growth rates is needed for estimating the remaining life of components, for safety analysis and to determine inspection intervals. This paper presents crack growth rates for Alloy 182 in a simulated primary side PWR environment. The results presented cover the influence of stress intensity factor (K_I = 20-56 Mpa√m) at 320℃ and the influence of temperature (290-340℃) with a K_I ~- vahie of 32 Mpa√m. A plateau value for the crack growth rate was observed for K _I~- values above 28-30 Mpa√m. For lower stress intensity values the crack growth rate decreases with decreasing stress intensity. The temperature dependence is expressed in terms of an activation energy.
机译：镍基焊接金属通常用于核电站，而晶间应力腐蚀开裂是这些合金的潜在问题。从国际角度来看，需要在初级侧压水堆环境中获得有关182合金的良好裂纹扩展率数据。需要有关裂纹扩展速率的知识来估计组件的剩余寿命，进行安全分析并确定检查间隔。本文介绍了在模拟的初级侧PWR环境中182合金的裂纹扩展速率。结果表明，在320℃时应力强度因子（K_I = 20-56Mpa√m）的影响以及在32 MPa时K_I〜-vahie对温度（290-340℃）的影响。对于高于28-30Mpa√m的K _I〜-值，观察到裂纹扩展速率的平稳值。对于较低的应力强度值，裂纹扩展速率随应力强度的降低而降低。温度依赖性以活化能表示。

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