• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Contributions to the Investigation of Mechanical Behavior of Gamma/Gamma NbC Cotac Composites at Medium and at High Temperature
【24h】

Contributions to the Investigation of Mechanical Behavior of Gamma/Gamma NbC Cotac Composites at Medium and at High Temperature

机译：Gamma /γNbCCotac复合材料在中高温下力学行为研究的贡献

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The behavior of gamma/gamma' NbC Cotac fiber composites under creep, transverse tension, thermal cycling under stress, and low-cycle fatigue was studied. In creep, it is demonstrated that in Cotac 784 the transfer of load from matrix to fibers is accompanied by a change in the mechanism of plastic deformation of the matrix during a test. In transverse tensile loading, analysis of the failure mechanisms of Cotac 744 and 784 enables qualitative interpretation of their ductility evolution with temperature, in the light of the yield stress of the matrix, the cohesive stress of the grain boundaries, and the cleavage stress of the lamellae of NbC. Thermal cycling causes the creep lifetime of Cotac 744 and 784 to decrease by a factor of 3 at 1100 C. In low-cycle fatigue, Cotac 784 was characterized at 650 C in tension/compression strain-controlled loading.

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